567 results on '"Scott, Glenn"'
Search Results
2. Real-time quality assurance and quality control for a high frequency radar network
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Hugh Roarty, Teresa Updyke, Laura Nazzaro, Michael Smith, Scott Glenn, and Oscar Schofield
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ocean currents ,high frequency radar ,remote sensing ,best practice ,quality assurance ,quality control ,Science ,General. Including nature conservation, geographical distribution ,QH1-199.5 - Abstract
This paper recommends end to end quality assurance methods and quality control tests for High Frequency Radar Networks. We focus on the network that is operated by the Mid Atlantic Regional Association Coastal Ocean Observing System (MARACOOS). The network currently consists of 38 radars making real-time measurements of the surface currents over the continental shelf for a variety of applications including search and rescue planning, oil spill trajectory modelling and providing a transport context for marine biodiversity observing networks. MARACOOS has been delivering surface current measurements to the United States Coast Guard (USCG) since May 2009. Data quality is important for all applications; however, since the USCG uses this surface current information to plan life-saving missions, delivery of the best quality data is crucial. We have mapped the components of the HF radar data processing chain onto the data levels presented in the NASA Earth Science Reference Handbook and have applied quality assurance and quality control techniques at each data level to achieve the highest quality data. There are approximately 400 High Frequency radars (HFRs) deployed globally and the presented techniques can provide a foundation for data quality checks and standardization of the data collected by the large number of systems operating today.
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- 2024
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3. Evaluation of the ocean component on different coupled hurricane forecasting models using upper-ocean metrics relevant to air-sea heat fluxes during Hurricane Dorian (2019)
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Maria F. Aristizábal Vargas, Hyun-Sook Kim, Matthieu Le Hénaff, Travis Miles, Scott Glenn, and Gustavo Goni
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Hurricane Dorian 2019 ,gliders ,forecast models ,upper-ocean metrics ,HWRF ,Science - Abstract
In August 2019 Hurricane Dorian traveled through the Caribbean Sea and Tropical Atlantic before devastating the Bahamas. The operational hurricane forecasting models under-predicted the intensity evolution of Dorian prior to the storm reaching its maximum strength. Research studies have shown that a more realistic upper-ocean characterization in coupled atmosphere-ocean models used to forecast hurricanes has the potential to lead to more accurate hurricane intensity forecasts. In this work, we evaluated four ocean products: the ocean component from one NOAA operational hurricane forecasting model that used ocean initial conditions from climatology, the ocean components from two NOAA experimental models using ocean initial conditions from a data-assimilative operational ocean model, and one US Navy data-assimilative operational ocean model for reference. The upper-ocean metrics used to evaluate the models include mixed layer temperature, mixed layer salinity, ocean heat content and depth-averaged temperature in the top 100 m. The observations used are temperature and salinity profiles from an array of six autonomous underwater gliders deployed in the Caribbean region during the 2019 hurricane season. We found that, even though the four models have good skill in predicting temperature and salinity over the whole observed water column, skill significantly deteriorates for the upper-ocean metrics. In particular, the models failed to capture the barrier layer that was present during the passage of Hurricane Dorian through the glider array. We also found that even small differences in the mixed layer temperature along the storm track on the hurricane models evaluated, led to noticeable differences in the total enthalpy fluxes delivered from the ocean to the atmosphere throughout the storm’s synoptic history. These findings highlight the need to improve the upper-ocean initial conditions and representation in coupled atmosphere-ocean models as part of the larger efforts to improve the various modeling aspects that control the hurricane intensity forecast.
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- 2024
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4. Aesop Fable for Network Loops
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Mosko, Marc, Scott, Glenn, and Oran, Dave
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Computer Science - Networking and Internet Architecture - Abstract
Detecting loops in data networks usually involves counting down a hop limit or caching data at each hop to detect a cycle. Using a hop limit means that the origin of a packet must know the maximum distance a packet could travel without loops. It also means a loop is not detected until it travels that maximum distance, even if that is many loops. Caching a packet signature at each hop, such as a hash or nonce, could require large amounts of memory at every hop because that cached information must persist for as long as a loop could forward packets. This paper presents a new distributed loop detection mechanism based on a Tortoise and Hare algorithm that can quickly detect loops without caching per-packet data at each hop with a modest amount of additional state in each packet.
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- 2016
5. The global burden of high fasting plasma glucose associated with zinc deficiency: Results of a systematic review and meta-analysis.
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James P Wirth, Wu Zeng, Nicolai Petry, Fabian Rohner, Scott Glenn, William E S Donkor, Rita Wegmüller, Erick Boy, and Keith Lividini
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Public aspects of medicine ,RA1-1270 - Abstract
Non-communicable diseases (NCDs) account for the largest share of the global disease burden, and increasing evidence shows that zinc deficiency (ZD) contributes to NCDs by inducing oxidative stress, insulin resistance, and impaired lipid metabolism. A systematic review and meta-analysis was conducted to determine whether ZD was associated with fasting plasma glucose (FPG), a key risk factor for NCDs. A random effects meta-analysis was conducted to determine the strength of the association in the form of an odds ratio (OR) and subsequently the population attributable risk (PAR) with population prevalences of high FPG. The disease burden from high FPG attributable to ZD was expressed as disability adjusted life years (DALYS). Data from seven studies were obtained as part of the systematic review. The meta-analysis shows a significant (p
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- 2023
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6. Association between firearms and mortality in Brazil, 1990 to 2017: a global burden of disease Brazil study
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Deborah Carvalho Malta, Adauto Martins Soares Filho, Isabella Vitral Pinto, Maria Cecília de Souza Minayo, Cheila Marina Lima, Ísis Eloah Machado, Renato Azeredo Teixeira, Otaliba Libânio Morais Neto, Roberto Marini Ladeira, Edgar Merchan-Hamann, Maria de Fatima Marinho de Souza, Cíntia Honório Vasconcelos, Carlos Cezar Flores Vidotti, Ewerton Cousin, Scott Glenn, Catherine Bisignano, Adrienne Chew, Antonio Luiz Ribeiro, and Mohsen Naghavi
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Brazil ,Firearms ,Homicide ,Mortality ,Epidemiology ,Computer applications to medicine. Medical informatics ,R858-859.7 ,Public aspects of medicine ,RA1-1270 - Abstract
Abstract Background Brazil leads the world in number of firearm deaths and ranks sixth by country in rate of firearm deaths per 100,000 people. This study aims to analyze trends in and burden of mortality by firearms, according to age and sex, for Brazil, and the association between these deaths and indicators of possession and carrying of weapons using data from the global burden of diseases, injuries, and risk factors study (GBD) 2017. Methods We used GBD 2017 estimates of mortality due to physical violence and self-harm from firearms for Brazil to analyze the association between deaths by firearms and explanatory variables. Results Deaths from firearms increased in Brazil from 25,819 in 1990 to 48,493 in 2017. Firearm mortality rates were higher among men and in the 20–24 age group; the rate was 20 times higher than for women in the same age group. Homicide rates increased during the study period, while mortality rates for suicides and accidental deaths decreased. The group of Brazilian federation units with the highest firearm collection rate (median = 7.5) showed reductions in the rate of total violent deaths by firearms. In contrast, the group with the lowest firearm collection rate (median = 2.0) showed an increase in firearm deaths from 2000 to 2017. An increase in the rate of voluntary return of firearms was associated with a reduction in mortality rates of unintentional firearm deaths (r = −0.364, p < 0.001). An increase in socio-demographic index (SDI) was associated with a reduction in all firearm death rates (r = −0.266, p = 0.008). An increase in the composite index of firearms seized or collected was associated with a reduction in rates of deaths by firearm in the subgroup of females, children, and the elderly (r = −0.269, p = 0.005). Conclusions There was a change in the trend of firearms deaths after the beginning of the collection of weapons in 2004. Federation units that collected more guns have reduced rates of violent firearm deaths.
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- 2020
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7. Trends in mortality due to non-communicable diseases in the Brazilian adult population: national and subnational estimates and projections for 2030
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Deborah Carvalho Malta, Bruce Bartholow Duncan, Maria Inês Schmidt, Renato Teixeira, Antonio Luiz Pinho Ribeiro, Mariana Santos Felisbino-Mendes, Ísis Eloah Machado, Gustavo Velasquez-Melendez, Luisa Campos Caldeira Brant, Diego Augusto Santos Silva, Valéria Maria de Azeredo Passos, Bruno R Nascimento, Ewerton Cousin, Scott Glenn, and Mohsen Naghavi
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Global burden of disease ,Non-communicable diseases ,Mortality ,Disability-adjusted life years ,Brazil ,Sustainable Development Goals ,Computer applications to medicine. Medical informatics ,R858-859.7 ,Public aspects of medicine ,RA1-1270 - Abstract
Abstract Background Monitoring and reducing premature mortality due to non-communicable diseases (NCDs) is a global priority of Agenda 2030. This study aimed to describe the mortality trends and disability-adjusted life years (DALYs) lost due to NCDs between 1990 and 2017 for Brazil and to project those for 2030 as well as the risk factors (RFs) attributed deaths according to estimates of the Global Burden of Disease Study. Methods We analyzed cardiovascular diseases, chronic respiratory diseases, neoplasms, and diabetes, and compared the mortality rates in 1990 and 2017 for all of Brazil and states. The study used the definition of premature mortality (30–69 years) that is used by the World Health Organization. The number of deaths, mortality rates, DALYs, and years of life lost (YLL) were used to compare 1990 and 2017. We analyzed the YLL for NCDs attributable to RFs. Results There was a reduction of 35.3% from 509.1 deaths/100,000 inhabitants (1990) to 329.6 deaths/100,000 inhabitants due to NCDs in 2017. The DALY rate decreased by 33.6%, and the YLL rate decreased by 36.0%. There were reductions in NCDs rates in all 27 states. The main RFs related to premature deaths by NCDs in 2017 among women were high body mass index (BMI), dietary risks, high systolic blood pressure, and among men, dietary risks, high systolic blood pressure, tobacco, and high BMI. Trends in mortality rates due to NCDs declined during the study period; however, after 2015, the curve reversed, and rates fluctuated and tended to increase. Conclusion Our findings highlighted a decline in premature mortality rates from NCDs nationwide and in all states. There was a greater reduction in deaths from cardiovascular diseases, followed by respiratory diseases, and we observed a minor reduction for those from diabetes and neoplasms. The observed fluctuations in mortality rates over the last 3 years indicate that if no further action is taken, we may not achieve the NCD Sustainable Development Goals. These findings draw attention to the consequences of austerity measures in a socially unequal setting with great regional disparities in which the majority of the population is dependent on state social policies.
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- 2020
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8. The burden of non-communicable diseases attributable to high BMI in Brazil, 1990–2017: findings from the Global Burden of Disease Study
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Mariana Santos Felisbino-Mendes, Ewerton Cousin, Deborah Carvalho Malta, Ísis Eloah Machado, Antonio Luiz Pinho Ribeiro, Bruce Bartholow Duncan, Maria Inês Schmidt, Diego Augusto Santos Silva, Scott Glenn, Ashkan Afshin, and Gustavo Velasquez-Melendez
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Obesity ,Body mass index ,Risk factors ,Comparative risk assessment ,Cardiovascular disease ,Computer applications to medicine. Medical informatics ,R858-859.7 ,Public aspects of medicine ,RA1-1270 - Abstract
Abstract Background The prevalence and burden of disease resulting from obesity have increased worldwide. In Brazil, more than half of the population is now overweight. However, the impact of this growing risk factor on disease burden remains inexact. Using the 2017 Global Burden of Disease (GBD) results, this study sought to estimate mortality and disability-adjusted life years (DALYs) lost to non-communicable diseases caused by high body mass index (BMI) in both sexes and across age categories. This study also aimed to describe the prevalence of overweight and obesity throughout the states of Brazil. Methods Age-standardized prevalence of overweight and obesity were estimated between 1990 and 2017. A comparative risk assessment was applied to estimate DALYs and deaths for non-communicable diseases and for all causes linked to high BMI. Results The prevalence of overweight and obesity increased during the period of analysis. Overall, age-standardized prevalence of obesity in Brazil was higher in females (29.8%) than in males (24.6%) in 2017; however, since 1990, males have presented greater rise in obesity (244.1%) than females (165.7%). Increases in prevalence burden were greatest in states from the North and Northeast regions of Brazil. Overall, burden due to high BMI also increased from 1990 to 2017. In 2017, high BMI was responsible for 12.3% (8.8–16.1%) of all deaths and 8.4% (6.3–10.7%) of total DALYs lost to non-communicable diseases, up from 7.2% (4.1–10.8%), and 4.6% (2.4-6.0%) in 1990, respectively. Change due to risk exposure is the leading contributor to the growth of BMI burden in Brazil. In 2017, high BMI was responsible for 165,954 deaths and 5,095,125 DALYs. Cardiovascular disease and diabetes have proven to be the most prevalent causes of deaths, along with DALYs caused by high BMI, regardless of sex or state. Conclusions This study demonstrates increasing age-standardized prevalence of obesity in all Brazilian states. High BMI plays an important role in disease burdens in terms of cardiovascular diseases, diabetes, and all causes of mortality. Assessing levels and trends in exposures to high BMI and the resulting disease burden highlights the current priority for primary prevention and public health action initiatives focused on obesity.
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- 2020
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9. Trends in prevalence and mortality burden attributable to smoking, Brazil and federated units, 1990 and 2017
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Deborah Carvalho Malta, Luisa Sorio Flor, Ísis Eloah Machado, Mariana Santos Felisbino-Mendes, Luisa Campos Caldeira Brant, Antonio Luiz Pinho Ribeiro, Renato Azeredo Teixeira, Eduardo Marques Macário, Marissa B. Reitsma, Scott Glenn, Mohsen Naghavi, and Emmanuela Gakidou
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Global burden of disease ,Quality-adjusted life years ,Risk factors ,Smoking ,Tobacco use ,Computer applications to medicine. Medical informatics ,R858-859.7 ,Public aspects of medicine ,RA1-1270 - Abstract
Abstract Background The present study sought to analyze smoking prevalence and smoking-attributable mortality estimates produced by the 2017 Global Burden of Disease Study for Brazil, 26 states, and the Federal District. Methods Prevalence of current smokers from 1990 to 2017 by sex and age was estimated using spatiotemporal Gaussian process regression. Population-attributable fractions were calculated for different risk-outcome pairs to generate estimates of smoking-attributable mortality. A cohort analysis of smoking prevalence by birth-year cohort was performed to better understand temporal age patterns in smoking. Smoking-attributable mortality rates were described and analyzed by development at state levels, using the Socio-Demographic Index (SDI). Finally, a decomposition analysis was conducted to evaluate the contribution of different factors to the changes in the number of deaths attributable to smoking between 1990 and 2017. Results Between 1990 and 2017, prevalence of smoking in the population (≥ 20 years old) decreased from 35.3 to 11.3% in Brazil. This downward trend was seen for both sexes and in all states, with a marked reduction in exposure to this risk factor in younger cohorts. Smoking-attributable mortality rates decreased by 57.8% (95% UI − 61.2, − 54.1) between 1990 and 2017. Overall, larger reductions were observed in states with higher SDI (Pearson correlation 0.637; p < 0.01). In Brazil, smoking remains responsible for a considerable amount of deaths, especially due to cardiovascular diseases and neoplasms. Conclusions Brazil has adopted a set of regulatory measures and implemented anti-tobacco policies that, along with improvements in socioeconomic conditions, have contributed to the results presented in the present study. Other regulatory measures need to be implemented to boost a reduction in smoking in order to reach the goals established in the scope of the 2030 United Nations Agenda for Sustainable Development.
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- 2020
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10. Corrigendum: OceanGliders: A Component of the Integrated GOOS
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Pierre Testor, Brad de Young, Daniel L. Rudnick, Scott Glenn, Daniel Hayes, Craig M. Lee, Charitha Pattiaratchi, Katherine Hill, Emma Heslop, Victor Turpin, Pekka Alenius, Carlos Barrera, John A. Barth, Nicholas Beaird, Guislain Bécu, Anthony Bosse, François Bourrin, J. Alexander Brearley, Yi Chao, Sue Chen, Jacopo Chiggiato, Laurent Coppola, Richard Crout, James Cummings, Beth Curry, Ruth Curry, Richard Davis, Kruti Desai, Steve DiMarco, Catherine Edwards, Sophie Fielding, Ilker Fer, Eleanor Frajka-Williams, Hezi Gildor, Gustavo Goni, Dimitri Gutierrez, Peter Haugan, David Hebert, Joleen Heiderich, Stephanie Henson, Karen Heywood, Patrick Hogan, Loïc Houpert, Sik Huh, Mark E. Inall, Masso Ishii, Shin-ichi Ito, Sachihiko Itoh, Sen Jan, Jan Kaiser, Johannes Karstensen, Barbara Kirkpatrick, Jody Klymak, Josh Kohut, Gerd Krahmann, Marjolaine Krug, Sam McClatchie, Frédéric Marin, Elena Mauri, Avichal Mehra, Michael P. Meredith, Thomas Meunier, Travis Miles, Julio M. Morell, Laurent Mortier, Sarah Nicholson, Joanne O'Callaghan, Diarmuid O'Conchubhair, Peter Oke, Enric Pallàs-Sanz, Matthew Palmer, JongJin Park, Leonidas Perivoliotis, Pierre-Marie Poulain, Ruth Perry, Bastien Queste, Luc Rainville, Eric Rehm, Moninya Roughan, Nicholas Rome, Tetjana Ross, Simon Ruiz, Grace Saba, Amandine Schaeffer, Martha Schönau, Katrin Schroeder, Yugo Shimizu, Bernadette M. Sloyan, David Smeed, Derrick Snowden, Yumi Song, Sebastian Swart, Miguel Tenreiro, Andrew Thompson, Joaquin Tintore, Robert E. Todd, Cesar Toro, Hugh Venables, Taku Wagawa, Stephanie Waterman, Roy A. Watlington, and Doug Wilson
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in situ ocean observing systems ,gliders ,boundary currents ,storms ,water transformation ,ocean data management ,Science ,General. Including nature conservation, geographical distribution ,QH1-199.5 - Published
- 2021
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11. Pharmacy Access to Syringes among Injecting Drug Users: Follow-up Findings from Hartford, Connecticut
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Singer, Merrill, Baer, Hans A., Scott, Glenn, and Weinstein, Beth
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- 1998
12. Current situation and progress toward the 2030 health-related Sustainable Development Goals in China: A systematic analysis.
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Shu Chen, Lei Guo, Zhan Wang, Wenhui Mao, Yanfeng Ge, Xiaohua Ying, Jing Fang, Qian Long, Qin Liu, Hao Xiang, Chenkai Wu, Chaowei Fu, Di Dong, Jiahui Zhang, Ju Sun, Lichun Tian, Limin Wang, Maigeng Zhou, Mei Zhang, Mengcen Qian, Wei Liu, Weixi Jiang, Wenmeng Feng, Xinying Zeng, Xiyu Ding, Xun Lei, Rachel Tolhurst, Ling Xu, Haidong Wang, Faye Ziegeweid, Scott Glenn, John S Ji, Mary Story, Gavin Yamey, and Shenglan Tang
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Medicine - Abstract
BACKGROUND:The Sustainable Development Goals (SDGs), adopted by all United Nations (UN) member states in 2015, established a set of bold and ambitious health-related targets to achieve by 2030. Understanding China's progress toward these targets is critical to improving population health for its 1.4 billion people. METHODS AND FINDINGS:We used estimates from the Global Burden of Disease (GBD) Study 2016, national surveys and surveillance data from China, and qualitative data. Twenty-eight of the 37 indicators included in the GBD Study 2016 were analyzed. We developed an attainment index of health-related SDGs, a scale of 0-100 based on the values of indicators. The projection model is adjusted based on the one developed by the GBD Study 2016 SDG collaborators. We found that China has achieved several health-related SDG targets, including decreasing neonatal and under-5 mortality rates and the maternal mortality ratios and reducing wasting and stunting for children. However, China may only achieve 12 out of the 28 health-related SDG targets by 2030. The number of target indicators achieved varies among provinces and municipalities. In 2016, among the seven measured health domains, China performed best in child nutrition and maternal and child health and reproductive health, with the attainment index scores of 93.0 and 91.8, respectively, followed by noncommunicable diseases (NCDs) (69.4), road injuries (63.6), infectious diseases (63.0), environmental health (62.9), and universal health coverage (UHC) (54.4). There are daunting challenges to achieve the targets for child overweight, infectious diseases, NCD risk factors, and environmental exposure factors. China will also have a formidable challenge in achieving UHC, particularly in ensuring access to essential healthcare for all and providing adequate financial protection. The attainment index of child nutrition is projected to drop to 80.5 by 2025 because of worsening child overweight. The index of NCD risk factors is projected to drop to 38.8 by 2025. Regional disparities are substantial, with eastern provinces generally performing better than central and western provinces. Sex disparities are clear, with men at higher risk of excess mortality than women. The primary limitations of this study are the limited data availability and quality for several indicators and the adoption of "business-as-usual" projection methods. CONCLUSION:The study found that China has made good progress in improving population health, but challenges lie ahead. China has substantially improved the health of children and women and will continue to make good progress, although geographic disparities remain a great challenge. Meanwhile, China faced challenges in NCDs, mental health, and some infectious diseases. Poor control of health risk factors and worsening environmental threats have posed difficulties in further health improvement. Meanwhile, an inefficient health system is a barrier to tackling these challenges among such a rapidly aging population. The eastern provinces are predicted to perform better than the central and western provinces, and women are predicted to be more likely than men to achieve these targets by 2030. In order to make good progress, China must take a series of concerted actions, including more investments in public goods and services for health and redressing the intracountry inequities.
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- 2019
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13. OceanGliders: A Component of the Integrated GOOS
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Pierre Testor, Brad de Young, Daniel L. Rudnick, Scott Glenn, Daniel Hayes, Craig M. Lee, Charitha Pattiaratchi, Katherine Hill, Emma Heslop, Victor Turpin, Pekka Alenius, Carlos Barrera, John A. Barth, Nicholas Beaird, Guislain Bécu, Anthony Bosse, François Bourrin, J. Alexander Brearley, Yi Chao, Sue Chen, Jacopo Chiggiato, Laurent Coppola, Richard Crout, James Cummings, Beth Curry, Ruth Curry, Richard Davis, Kruti Desai, Steve DiMarco, Catherine Edwards, Sophie Fielding, Ilker Fer, Eleanor Frajka-Williams, Hezi Gildor, Gustavo Goni, Dimitri Gutierrez, Peter Haugan, David Hebert, Joleen Heiderich, Stephanie Henson, Karen Heywood, Patrick Hogan, Loïc Houpert, Sik Huh, Mark E. Inall, Masso Ishii, Shin-ichi Ito, Sachihiko Itoh, Sen Jan, Jan Kaiser, Johannes Karstensen, Barbara Kirkpatrick, Jody Klymak, Josh Kohut, Gerd Krahmann, Marjolaine Krug, Sam McClatchie, Frédéric Marin, Elena Mauri, Avichal Mehra, Michael P. Meredith, Thomas Meunier, Travis Miles, Julio M. Morell, Laurent Mortier, Sarah Nicholson, Joanne O'Callaghan, Diarmuid O'Conchubhair, Peter Oke, Enric Pallàs-Sanz, Matthew Palmer, JongJin Park, Leonidas Perivoliotis, Pierre-Marie Poulain, Ruth Perry, Bastien Queste, Luc Rainville, Eric Rehm, Moninya Roughan, Nicholas Rome, Tetjana Ross, Simon Ruiz, Grace Saba, Amandine Schaeffer, Martha Schönau, Katrin Schroeder, Yugo Shimizu, Bernadette M. Sloyan, David Smeed, Derrick Snowden, Yumi Song, Sebastian Swart, Miguel Tenreiro, Andrew Thompson, Joaquin Tintore, Robert E. Todd, Cesar Toro, Hugh Venables, Taku Wagawa, Stephanie Waterman, Roy A. Watlington, and Doug Wilson
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in situ ocean observing systems ,gliders ,boundary currents ,storms ,water transformation ,ocean data management ,Science ,General. Including nature conservation, geographical distribution ,QH1-199.5 - Abstract
The OceanGliders program started in 2016 to support active coordination and enhancement of global glider activity. OceanGliders contributes to the international efforts of the Global Ocean Observation System (GOOS) for Climate, Ocean Health, and Operational Services. It brings together marine scientists and engineers operating gliders around the world: (1) to observe the long-term physical, biogeochemical, and biological ocean processes and phenomena that are relevant for societal applications; and, (2) to contribute to the GOOS through real-time and delayed mode data dissemination. The OceanGliders program is distributed across national and regional observing systems and significantly contributes to integrated, multi-scale and multi-platform sampling strategies. OceanGliders shares best practices, requirements, and scientific knowledge needed for glider operations, data collection and analysis. It also monitors global glider activity and supports the dissemination of glider data through regional and global databases, in real-time and delayed modes, facilitating data access to the wider community. OceanGliders currently supports national, regional and global initiatives to maintain and expand the capabilities and application of gliders to meet key global challenges such as improved measurement of ocean boundary currents, water transformation and storm forecast.
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- 2019
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14. Ocean Observations in Support of Studies and Forecasts of Tropical and Extratropical Cyclones
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Ricardo Domingues, Akira Kuwano-Yoshida, Patricia Chardon-Maldonado, Robert E. Todd, George Halliwell, Hyun-Sook Kim, I.-I. Lin, Katsufumi Sato, Tomoko Narazaki, Lynn K. Shay, Travis Miles, Scott Glenn, Jun A. Zhang, Steven R. Jayne, Luca Centurioni, Matthieu Le Hénaff, Gregory R. Foltz, Francis Bringas, M. M. Ali, Steven F. DiMarco, Shigeki Hosoda, Takuya Fukuoka, Benjamin LaCour, Avichal Mehra, Elizabeth R. Sanabia, John R. Gyakum, Jili Dong, John A. Knaff, and Gustavo Goni
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tropical cyclones ,extratropical bomb cyclones ,upper-ocean temperature ,ocean heat content ,global ocean observing system ,weather extremes ,Science ,General. Including nature conservation, geographical distribution ,QH1-199.5 - Abstract
Over the past decade, measurements from the climate-oriented ocean observing system have been key to advancing the understanding of extreme weather events that originate and intensify over the ocean, such as tropical cyclones (TCs) and extratropical bomb cyclones (ECs). In order to foster further advancements to predict and better understand these extreme weather events, a need for a dedicated observing system component specifically to support studies and forecasts of TCs and ECs has been identified, but such a system has not yet been implemented. New technologies, pilot networks, targeted deployments of instruments, and state-of-the art coupled numerical models have enabled advances in research and forecast capabilities and illustrate a potential framework for future development. Here, applications and key results made possible by the different ocean observing efforts in support of studies and forecasts of TCs and ECs, as well as recent advances in observing technologies and strategies are reviewed. Then a vision and specific recommendations for the next decade are discussed.
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- 2019
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15. The Global High Frequency Radar Network
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Hugh Roarty, Thomas Cook, Lisa Hazard, Doug George, Jack Harlan, Simone Cosoli, Lucy Wyatt, Enrique Alvarez Fanjul, Eric Terrill, Mark Otero, John Largier, Scott Glenn, Naoto Ebuchi, Brian Whitehouse, Kevin Bartlett, Julien Mader, Anna Rubio, Lorenzo Corgnati, Carlo Mantovani, Annalisa Griffa, Emma Reyes, Pablo Lorente, Xavier Flores-Vidal, Kelly Johanna Saavedra-Matta, Peter Rogowski, Siriluk Prukpitikul, Sang-Ho Lee, Jian-Wu Lai, Charles-Antoine Guerin, Jorge Sanchez, Birgit Hansen, and Stephan Grilli
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remote sensing ,high frequency radar ,ocean currents ,waves ,tsunami ,boundary currents ,Science ,General. Including nature conservation, geographical distribution ,QH1-199.5 - Abstract
Academic, government, and private organizations from around the globe have established High Frequency radar (hereinafter, HFR) networks at regional or national levels. Partnerships have been established to coordinate and collaborate on a single global HFR network (http://global-hfradar.org/). These partnerships were established in 2012 as part of the Group on Earth Observations (GEO) to promote HFR technology and increase data sharing among operators and users. The main product of HFR networks are continuous maps of ocean surface currents within 200 km of the coast at high spatial (1–6 km) and temporal resolution (hourly or higher). Cutting-edge remote sensing technologies are becoming a standard component for ocean observing systems, contributing to the paradigm shift toward ocean monitoring. In 2017 the Global HFR Network was recognized by the Joint Technical WMO-IOC Commission for Oceanography and Marine Meteorology (JCOMM) as an observing network of the Global Ocean Observing System (GOOS). In this paper we will discuss the development of the network as well as establishing goals for the future. The U.S. High Frequency Radar Network (HFRNet) has been in operation for over 13 years, with radar data being ingested from 31 organizations including measurements from Canada and Mexico. HFRNet currently holds a collection from over 150 radar installations totaling millions of records of surface ocean velocity measurements. During the past 10 years in Europe, HFR networks have been showing steady growth with over 60 stations currently deployed and many in the planning stage. In Asia and Oceania countries, more than 110 radar stations are in operation. HFR technology can be found in a wide range of applications: for marine safety, oil spill response, tsunami warning, pollution assessment, coastal zone management, tracking environmental change, numerical model simulation of 3-dimensional circulation, and research to generate new understanding of coastal ocean dynamics, depending mainly on each country’s coastal sea characteristics. These radar networks are examples of national inter-agency and inter-institutional partnerships for improving oceanographic research and operations. As global partnerships grow, these collaborations and improved data sharing enhance our ability to respond to regional, national, and global environmental and management issues.
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- 2019
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16. The burden of chronic respiratory diseases and their heterogeneity across the states of India: the Global Burden of Disease Study 1990–2016
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Sundeep Salvi, G Anil Kumar, R S Dhaliwal, Katherine Paulson, Anurag Agrawal, Parvaiz A Koul, P A Mahesh, Sanjeev Nair, Virendra Singh, Ashutosh N Aggarwal, D J Christopher, Randeep Guleria, B V Murali Mohan, Surya K Tripathi, Aloke G Ghoshal, R Vijai Kumar, Ravi Mehrotra, D K Shukla, Eliza Dutta, Melissa Furtado, Deeksha Bhardwaj, Mari Smith, Rizwan S Abdulkader, Monika Arora, Kalpana Balakrishnan, Joy K Chakma, Pankaj Chaturvedi, Sagnik Dey, Deesha Ghorpade, Scott Glenn, Prakash C Gupta, Tarun Gupta, Sarah C Johnson, Tushar K Joshi, Michael Kutz, Manu R Mathur, Prashant Mathur, Pallavi Muraleedharan, Christopher M Odell, Sanghamitra Pati, Yogesh Sabde, Dhirendra N Sinha, K R Thankappan, Chris M Varghese, Geetika Yadav, Stephen S Lim, Mohsen Naghavi, Rakhi Dandona, K Srinath Reddy, Theo Vos, Christopher J L Murray, Soumya Swaminathan, and Lalit Dandona
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Public aspects of medicine ,RA1-1270 - Abstract
Summary: Background: India has 18% of the global population and an increasing burden of chronic respiratory diseases. However, a systematic understanding of the distribution of chronic respiratory diseases and their trends over time is not readily available for all of the states of India. Our aim was to report the trends in the burden of chronic respiratory diseases and the heterogeneity in their distribution in all states of India between 1990 and 2016. Methods: Using all accessible data from multiple sources, we estimated the prevalence of major chronic respiratory diseases and the deaths and disability-adjusted life-years (DALYs) caused by them for every state of India from 1990 to 2016 as part of the Global Burden of Diseases, Injuries, and Risk Factors Study (GBD) 2016. We assessed heterogeneity in the burden of chronic obstructive pulmonary disease (COPD) and asthma across the states of India. The states were categorised into four groups based on their epidemiological transition level (ETL). ETL was defined as the ratio of DALYs from communicable diseases to those from non-communicable diseases and injuries combined, with a low ratio denoting high ETL and vice versa. We also assessed the contribution of risk factors to DALYs due to COPD. We compared the burden of chronic respiratory diseases in India against the global average in GBD 2016. We calculated 95% uncertainty intervals (UIs) for the point estimates. Findings: The contribution of chronic respiratory diseases to the total DALYs in India increased from 4·5% (95% UI 4·0–4·9) in 1990 to 6·4% (5·8–7·0) in 2016. Of the total global DALYs due to chronic respiratory diseases in 2016, 32·0% occurred in India. COPD and asthma were responsible for 75·6% and 20·0% of the chronic respiratory disease DALYs, respectively, in India in 2016. The number of cases of COPD in India increased from 28·1 million (27·0–29·2) in 1990 to 55·3 million (53·1–57·6) in 2016, an increase in prevalence from 3·3% (3·1–3·4) to 4·2% (4·0–4·4). The age-standardised COPD prevalence and DALY rates in 2016 were highest in the less developed low ETL state group. There were 37·9 million (35·7–40·2) cases of asthma in India in 2016, with similar prevalence in the four ETL state groups, but the highest DALY rate was in the low ETL state group. The highest DALY rates for both COPD and asthma in 2016 were in the low ETL states of Rajasthan and Uttar Pradesh. The DALYs per case of COPD and asthma were 1·7 and 2·4 times higher in India than the global average in 2016, respectively; most states had higher rates compared with other locations worldwide at similar levels of Socio-demographic Index. Of the DALYs due to COPD in India in 2016, 53·7% (43·1–65·0) were attributable to air pollution, 25·4% (19·5–31·7) to tobacco use, and 16·5% (14·1–19·2) to occupational risks, making these the leading risk factors for COPD. Interpretation: India has a disproportionately high burden of chronic respiratory diseases. The increasing contribution of these diseases to the overall disease burden across India and the high rate of health loss from them, especially in the less developed low ETL states, highlights the need for focused policy interventions to address this significant cause of disease burden in India. Funding: Bill & Melinda Gates Foundation; and Indian Council of Medical Research, Department of Health Research, Ministry of Health and Family Welfare, Government of India.
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- 2018
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17. The increasing burden of diabetes and variations among the states of India: the Global Burden of Disease Study 1990–2016
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Nikhil Tandon, Ranjit M Anjana, Viswanathan Mohan, Tanvir Kaur, Ashkan Afshin, Kanyin Ong, Satinath Mukhopadhyay, Nihal Thomas, Eesh Bhatia, Anand Krishnan, Prashant Mathur, R S Dhaliwal, D K Shukla, Anil Bhansali, Dorairaj Prabhakaran, Paturi V Rao, Chittaranjan S Yajnik, G Anil Kumar, Chris M Varghese, Melissa Furtado, Sanjay K Agarwal, Megha Arora, Deeksha Bhardwaj, Joy K Chakma, Leslie Cornaby, Eliza Dutta, Scott Glenn, N Gopalakrishnan, Rajeev Gupta, Panniyammakal Jeemon, Sarah C Johnson, Tripti Khanna, Sanjay Kinra, Michael Kutz, Pallavi Muraleedharan, Nitish Naik, Chrisopher M Odell, Anu M Oommen, Jeyaraj D Pandian, Sreejith Parameswaran, Sanghamitra Pati, Narayan Prasad, D Sreebhushan Raju, Ambuj Roy, Meenakshi Sharma, Chander Shekhar, Sharvari R Shukla, Narinder P Singh, J S Thakur, Ranjit Unnikrishnan, Santosh Varughese, Denis Xavier, Geevar Zachariah, Stephen S Lim, Mohsen Naghavi, Rakhi Dandona, Theo Vos, Christopher J L Murray, K Srinath Reddy, Soumya Swaminathan, and Lalit Dandona
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Public aspects of medicine ,RA1-1270 - Abstract
Summary: Background: The burden of diabetes is increasing rapidly in India but a systematic understanding of its distribution and time trends is not available for every state of India. We present a comprehensive analysis of the time trends and heterogeneity in the distribution of diabetes burden across all states of India between 1990 and 2016. Methods: We analysed the prevalence and disability-adjusted life-years (DALYs) of diabetes in the states of India from 1990 to 2016 using all available data sources that could be accessed as part of the Global Burden of Diseases, Injuries, and Risk Factors Study 2016, and assessed heterogeneity across the states. The states were placed in four groups based on epidemiological transition level (ETL), defined on the basis of the ratio of DALYs from communicable diseases to those from non-communicable diseases and injuries combined, with a low ratio denoting high ETL and vice versa. We assessed the contribution of risk factors to diabetes DALYs and the relation of overweight (body-mass index 25 kg/m2 or more) with diabetes prevalence. We calculated 95% uncertainty intervals (UIs) for the point estimates. Findings: The number of people with diabetes in India increased from 26·0 million (95% UI 23·4–28·6) in 1990 to 65·0 million (58·7–71·1) in 2016. The prevalence of diabetes in adults aged 20 years or older in India increased from 5·5% (4·9–6·1) in 1990 to 7·7% (6·9–8·4) in 2016. The prevalence in 2016 was highest in Tamil Nadu and Kerala (high ETL) and Delhi (higher-middle ETL), followed by Punjab and Goa (high ETL) and Karnataka (higher-middle ETL). The age-standardised DALY rate for diabetes increased in India by 39·6% (32·1–46·7) from 1990 to 2016, which was the highest increase among major non-communicable diseases. The age-standardised diabetes prevalence and DALYs increased in every state, with the percentage increase among the highest in several states in the low and lower-middle ETL state groups. The most important risk factor for diabetes in India was overweight to which 36·0% (22·6–49·2) of the diabetes DALYs in 2016 could be attributed. The prevalence of overweight in adults in India increased from 9·0% (8·7–9·3) in 1990 to 20·4% (19·9–20·8) in 2016; this prevalence increased in every state of the country. For every 100 overweight adults aged 20 years or older in India, there were 38 adults (34–42) with diabetes, compared with the global average of 19 adults (17–21) in 2016. Interpretation: The increase in health loss from diabetes since 1990 in India is the highest among major non-communicable diseases. With this increase observed in every state of the country, and the relative rate of increase highest in several less developed low ETL states, policy action that takes these state-level differences into account is needed urgently to control this potentially explosive public health situation. Funding: Bill & Melinda Gates Foundation; and Indian Council of Medical Research, Department of Health Research, Ministry of Health and Family Welfare, Government of India.
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- 2018
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18. The changing patterns of cardiovascular diseases and their risk factors in the states of India: the Global Burden of Disease Study 1990–2016
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Dorairaj Prabhakaran, Panniyammakal Jeemon, Meenakshi Sharma, Gregory A Roth, Catherine Johnson, Sivadasanpillai Harikrishnan, Rajeev Gupta, Jeyaraj D Pandian, Nitish Naik, Ambuj Roy, R S Dhaliwal, Denis Xavier, Raman K Kumar, Nikhil Tandon, Prashant Mathur, D K Shukla, Ravi Mehrotra, K Venugopal, G Anil Kumar, Chris M Varghese, Melissa Furtado, Pallavi Muraleedharan, Rizwan S Abdulkader, Tahiya Alam, Ranjit M Anjana, Monika Arora, Anil Bhansali, Deeksha Bhardwaj, Eesh Bhatia, Joy K Chakma, Pankaj Chaturvedi, Eliza Dutta, Scott Glenn, Prakash C Gupta, Sarah C Johnson, Tanvir Kaur, Sanjay Kinra, Anand Krishnan, Michael Kutz, Manu R Mathur, Viswanathan Mohan, Satinath Mukhopadhyay, Minh Nguyen, Christopher M Odell, Anu M Oommen, Sanghamitra Pati, Martin Pletcher, Kameshwar Prasad, Paturi V Rao, Chander Shekhar, Dhirendra N Sinha, P N Sylaja, J S Thakur, Kavumpurathu R Thankappan, Nihal Thomas, Simon Yadgir, Chittaranjan S Yajnik, Geevar Zachariah, Ben Zipkin, Stephen S Lim, Mohsen Naghavi, Rakhi Dandona, Theo Vos, Christopher J L Murray, K Srinath Reddy, Soumya Swaminathan, and Lalit Dandona
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Public aspects of medicine ,RA1-1270 - Abstract
Summary: Background: The burden of cardiovascular diseases is increasing in India, but a systematic understanding of its distribution and time trends across all the states is not readily available. In this report, we present a detailed analysis of how the patterns of cardiovascular diseases and major risk factors have changed across the states of India between 1990 and 2016. Methods: We analysed the prevalence and disability-adjusted life-years (DALYs) due to cardiovascular diseases and the major component causes in the states of India from 1990 to 2016, using all accessible data sources as part of the Global Burden of Diseases, Injuries, and Risk Factors Study 2016. We placed states into four groups based on epidemiological transition level (ETL), defined using the ratio of DALYs from communicable diseases to those from non-communicable diseases and injuries combined, with a low ratio denoting high ETL and vice versa. We assessed heterogeneity in the burden of major cardiovascular diseases across the states of India, and the contribution of risk factors to cardiovascular diseases. We calculated 95% uncertainty intervals (UIs) for the point estimates. Findings: Overall, cardiovascular diseases contributed 28·1% (95% UI 26·5–29·1) of the total deaths and 14·1% (12·9–15·3) of the total DALYs in India in 2016, compared with 15·2% (13·7–16·2) and 6·9% (6·3–7·4), respectively, in 1990. In 2016, there was a nine times difference between states in the DALY rate for ischaemic heart disease, a six times difference for stroke, and a four times difference for rheumatic heart disease. 23·8 million (95% UI 22·6–25·0) prevalent cases of ischaemic heart disease were estimated in India in 2016, and 6·5 million (6·3–6·8) prevalent cases of stroke, a 2·3 times increase in both disorders from 1990. The age-standardised prevalence of both ischaemic heart disease and stroke increased in all ETL state groups between 1990 and 2016, whereas that of rheumatic heart disease decreased; the increase for ischaemic heart disease was highest in the low ETL state group. 53·4% (95% UI 52·6–54·6) of crude deaths due to cardiovascular diseases in India in 2016 were among people younger than 70 years, with a higher proportion in the low ETL state group. The leading overlapping risk factors for cardiovascular diseases in 2016 included dietary risks (56·4% [95% CI 48·5–63·9] of cardiovascular disease DALYs), high systolic blood pressure (54·6% [49·0–59·8]), air pollution (31·1% [29·0–33·4]), high total cholesterol (29·4% [24·3–34·8]), tobacco use (18·9% [16·6–21·3]), high fasting plasma glucose (16·7% [11·4–23·5]), and high body-mass index (14·7% [8·3–22·0]). The prevalence of high systolic blood pressure, high total cholesterol, and high fasting plasma glucose increased generally across all ETL state groups from 1990 to 2016, but this increase was variable across the states; the prevalence of smoking decreased during this period in all ETL state groups. Interpretation: The burden from the leading cardiovascular diseases in India—ischaemic heart disease and stroke—varies widely between the states. Their increasing prevalence and that of several major risk factors in every part of India, especially the highest increase in the prevalence of ischaemic heart disease in the less developed low ETL states, indicates the need for urgent policy and health system response appropriate for the situation in each state. Funding: Bill & Melinda Gates Foundation; and Indian Council of Medical Research, Department of Health Research, Ministry of Health and Family Welfare, Government of India.
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- 2018
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19. Understanding the Gulf Ocean System Program: Informing Stakeholders and Improving Prediction of the Loop Current System Using Advanced Observational and Numerical Tools
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Anthony Knap, Steven DiMarco, Scott Glenn, Rafael Ramos, Bruce Magnell, and David Salas
- Abstract
Objectives/Scope: This paper describes a program funded by the National Academy of Sciences, Engineering and Medicine (NASEM) that follows up on 2 (3-year) programs to better predict the behavior of the Gulf Loop Current and its associated eddies, which in some years create havoc to Offshore Technology Industries and activities in the Northern Gulf of Mexico. The aim is to inform and integrate with Stakeholders for new and better products and agreed metrics to provide better tools for the end-users in the Gulf of Mexico. In recent years, 2015 and 2021 there were significant ocean current extremes that had major effects on the offshore industry which were difficult to predict and caused huge financial losses to offshore operations in the Northern Gulf of Mexico. Methods, Procedures, Process: Using data from remote autonomous vehicles such as surface drifters, profiling floats, ocean buoyancy gliders, wave powered vehicles, fixed bottom moored acoustic systems, a Topographic Rossby Wave array and a series of coastal fixed High Frequency radars new models will be developed to predict Loop current dynamics, eddy shedding and reabsorption. In addition, data collected will be used to determine upper ocean heat content and its role in prediction of hurricane intensity forecasts. The program has a strong group of Private/Public stakeholders and we are hoping to get wider involvement in this program to deliver the best and most timely information to end-users in the Northern Gulf of Mexico. Results, Observations, Conclusions: In total NASEM has funded a $40 million research program that will improve prediction, improve human well-being and improve offshore safety, and that the program seeks to understand (in this context) what the end user community needs are, to provide the foundation for continued dialogue and to provide a model for future private-public partnerships between scientists, agencies, and industry. Novel/Additive Information: We believe that this program is unique as it relies on the involvement of industry and agency stakeholders at the beginning of the program so the observing systems and models can be co-designed and tailored to the recipient needs, not the other way around with has generally been the norm in the past.
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- 2023
20. Stadia for a sustainable future
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Scott, Glenn and Pauline, John
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- 2016
21. Madame's American Adventures: U.S. News Magazines' Coverage of Madame Chiang Kai-shek's 1943, 1944-45, and 1948 visits to the United States.
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Haygood, Daniel M. and Scott, Glenn W.
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WORLD War II ,CHINA-United States relations - Abstract
Henry Luce's many critics accused him of using his Time Inc. media to advocate for Chinese General Chiang Kai-shek and his Nationalist party during the pre-war, World War II, and post-war eras. Specifically, Luce is accused of using Soong Mei-ling, the English-speaking, American-educated, and Christian wife of General Chiang, as part of his strategy to generate support among Americans for the Chiangs' Nationalist Party. This research reviews U.S. news magazines' coverage of Madame Chiang's three trips to America in 1943, 1944-45, and 1948 to understand the differences in the reporting, thereby potentially revealing an embedded Luce agenda. While the reportage in the U.S. news magazines evolved, this analysis demonstrated few substantive differences in the magazines' portrayals of Madame Chiang during her three visits during the 1940s, challenging common depictions of Luce's distinct agenda. The tone and direction of the coverage mirrored the changing relationship between the United States and China. [ABSTRACT FROM AUTHOR]
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- 2023
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22. Ocean mixing during Hurricane Ida (2021): The impact of a freshwater barrier layer
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Travis N Miles, Samuel J. Coakley, Johna Elizabeth Rudzin, Senam Tsei, and Scott Glenn
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Tropical cyclones are one of the costliest and deadliest natural disasters globally, and impacts are currently expected to worsen with a changing climate. Hurricane Ida (2021) made landfall as a category 4 storm on the US gulf coast after intensifying over a Loop Current eddy and a freshwater barrier layer that extended from the coast to the open ocean waters off the continental shelf. An autonomous underwater glider sampled this ocean feature ahead of Ida. We use this data with 1-D shear driven mixed layer models to investigate the sensitivity of the upper ocean mixing to a barrier layer during Ida’s intensification period. We show that the freshwater barrier layer inhibited cooling by as much as 56% and resulted in increased enthalpy flux to the atmosphere by >20% as the storm made landfall. This highlights the utility of sustained observations to support coupled ocean and atmosphere hurricane forecasts.
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- 2023
23. Upper Ocean Transport in the Anegada Passage from Multi-Year Glider Surveys
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Joseph Christopher Gradone, William Douglas Wilson, Scott Glenn, and Travis N Miles
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Caribbean through-flow accounts for up to two-thirds of the Florida Current and consequently is an important conduit of heat and salt fluxes in the Atlantic branch of the Meridional Overturning Circulation (MOC). While high-latitude sinking and interior mixing processes have a first order control on the magnitude of the MOC, low-latitude wind-driven processes determine and modify the subsurface density structure of the water masses flowing through the Caribbean Sea. Considering there is evidence that up to one-half of the Florida Current originates as South Atlantic Waters (SAW), determining the distribution of SAW throughout the Caribbean Island passages is important as this constitutes the major pathway for cross-equatorial MOC return flow. Ship-based observations in the 1990’s revealed the Windward Island passages as a dominant SAW inflow pathway. However, there is still a significant amount of SAW that is taking an unknown, alternate route northward. The Anegada Passage (AP) is a major location for subtropical gyre inflow and suggested to be an alternate SAW inflow pathway. Here, we present the first co-located observations of temperature, salinity, and subsurface velocity in the AP in nearly 20 years. These observations provide evidence that the total transport (4-5 Sv) and the transport of SAW through the AP (1-2.55 Sv) is larger than previously estimated. This result implies that the AP is a significant pathway for cross-equatorial MOC return flow. The results presented here also provide evidence that gliders with acoustic doppler profilers are viable, cost-effective method for measuring island passage transport.
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- 2023
24. Gender differentials and state variations in suicide deaths in India: the Global Burden of Disease Study 1990–2016
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Rakhi Dandona, G Anil Kumar, R S Dhaliwal, Mohsen Naghavi, Theo Vos, D K Shukla, Lakshmi Vijayakumar, G Gururaj, J S Thakur, Atul Ambekar, Rajesh Sagar, Megha Arora, Deeksha Bhardwaj, Joy K Chakma, Eliza Dutta, Melissa Furtado, Scott Glenn, Caitlin Hawley, Sarah C Johnson, Tripti Khanna, Michael Kutz, W Cliff Mountjoy-Venning, Pallavi Muraleedharan, Thara Rangaswamy, Chris M Varghese, Mathew Varghese, K Srinath Reddy, Christopher J L Murray, Soumya Swaminathan, and Lalit Dandona
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Public aspects of medicine ,RA1-1270 - Abstract
Summary: Background: A systematic understanding of suicide mortality trends over time at the subnational level for India's 1·3 billion people, 18% of the global population, is not readily available. Thus, we aimed to report time trends of suicide deaths, and the heterogeneity in its distribution between the states of India from 1990 to 2016. Methods: As part of the Global Burden of Diseases, Injuries, and Risk Factors Study (GBD) 2016, we estimated suicide death rates (SDRs) for both sexes in each state of India from 1990 to 2016. We used various data sources for estimating cause-specific mortality in India. For suicide mortality in India before 2000, estimates were based largely on GBD covariates. For each state, we calculated the ratio of the observed SDR to the rate expected in geographies globally with similar GBD Socio-demographic Index in 2016 (ie, the observed-to-expected ratio); and assessed the age distribution of suicide deaths, and the men-to-women ratio of SDR over time. Finally, we assessed the probability for India and the states of reaching the Sustainable Development Goal (SDG) target of a one-third reduction in SDR from 2015 to 2030, using location-wise trends of the age-standardised SDR from 1990 to 2016. We calculated 95% uncertainty intervals (UIs) for the point estimates. Findings: There were 230 314 (95% UI 194 058–250 260) suicide deaths in India in 2016. India's contribution to global suicide deaths increased from 25·3% in 1990 to 36·6% in 2016 among women, and from 18·7% to 24·3% among men. Age-standardised SDR among women in India reduced by 26·7% from 20·0 (95% UI 16·5–23·5) in 1990 to 14·7 (13·1–16·2) per 100 000 in 2016, but the age-standardised SDR among men was the same in 1990 (22·3 [95% UI 14·4–27·4] per 100 000) and 2016 (21·2 [14·6–23·6] per 100 000). SDR in women was 2·1 times higher in India than the global average in 2016, and the observed-to-expected ratio was 2·74, ranging from 0·45 to 4·54 between the states. SDR in men was 1·4 times higher in India than the global average in 2016, with an observed-to-expected ratio of 1·31, ranging from 0·40 to 2·42 between the states. There was a ten-fold variation between the states in the SDR for women and six-fold variation for men in 2016. The men-to-women ratio of SDR for India was 1·34 in 2016, ranging from 0·97 to 4·11 between the states. The highest age-specific SDRs among women in 2016 were for ages 15–29 years and 75 years or older, and among men for ages 75 years or older. Suicide was the leading cause of death in India in 2016 for those aged 15–39 years; 71·2% of the suicide deaths among women and 57·7% among men were in this age group. If the trends observed up to 2016 continue, the probability of India achieving the SDG SDR reduction target in 2030 is zero, and the majority of the states with 81·3% of India's population have less than 10% probability, three states have a probability of 10·3–15·0%, and six have a probability of 25·1–36·7%. Interpretation: India's proportional contribution to global suicide deaths is high and increasing. SDR in India is higher than expected for its Socio-Demographic Index level, especially for women, with substantial variations in the magnitude and men-to-women ratio between the states. India must develop a suicide prevention strategy that takes into account these variations in order to address this major public health problem. Funding: Bill & Melinda Gates Foundation; and Indian Council of Medical Research, Department of Health Research, Ministry of Health and Family Welfare, Government of India.
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- 2018
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25. Paleoenvironmental analysis of the Glenalum Tunnel coal and roof rock, southern West Virginia—Implications for sulfur origin and trends
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Martino, Ronald L., Grady, William C., Lukey, Helene M., Scott, Glenn W., Harrison, Joe, and Karukus, Musa
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- 2014
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26. Population health outcomes in Nigeria compared with other west African countries, 1998-2019: a systematic analysis for the Global Burden of Disease Study
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Blake Angell, Olutobi Sanuade, Ifedayo M O Adetifa, Iruka N Okeke, Aishatu Lawal Adamu, Muktar H Aliyu, Emmanuel A Ameh, Fatima Kyari, Muktar A Gadanya, Diana A Mabayoje, Adesola Yinka-Ogunleye, Tolu Oni, Rabiu Ibrahim Jalo, Fatimah I Tsiga-Ahmed, Sarah L Dalglish, Seye Abimbola, Tim Colbourn, Obinna Onwujekwe, Eme Theodora Owoaje, Gambo Aliyu, Sani H Aliyu, Belinda Archibong, Alex Ezeh, Chikwe Ihekweazu, Zubairu Iliyasu, Stephen Obaro, Ebenezer Babatunde Obadare, Friday Okonofua, Muhammed Pate, Babatunde L Salako, Fatima H Zanna, Scott Glenn, Ally Walker, Maha Ezalarab, Mohsen Naghavi, Ibrahim Abubakar, Oni, Tolu [0000-0003-4499-1910], Apollo - University of Cambridge Repository, Tsiga-Ahmed, Fatimah I [0000-0003-4207-7981], and Abubakar, Ibrahim [0000-0002-0370-1430]
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Male ,Africa, Western ,Life Expectancy ,Population Health ,Infant, Newborn ,Humans ,Nigeria ,Female ,General Medicine ,Global Burden of Disease - Abstract
BACKGROUND: Population-level health and mortality data are crucial for evidence-informed policy but scarce in Nigeria. To fill this gap, we undertook a comprehensive assessment of the burden of disease in Nigeria and compared outcomes to other west African countries. METHODS: In this systematic analysis, using data and results of the Global Burden of Diseases, Injuries, and Risk Factors Study 2019, we analysed patterns of mortality, years of life lost (YLLs), years lived with disability (YLDs), life expectancy, healthy life expectancy (HALE), and health system coverage for Nigeria and 15 other west African countries by gender in 1998 and 2019. Estimates of all-age and age-standardised disability-adjusted life-years for 369 diseases and injuries and 87 risk factors are presented for Nigeria. Health expenditure per person and gross domestic product were extracted from the World Bank repository. FINDINGS: Between 1998 and 2019, life expectancy and HALE increased in Nigeria by 18% to 64·3 years (95% uncertainty interval [UI] 62·2-66·6), mortality reduced for all age groups for both male and female individuals, and health expenditure per person increased from the 11th to third highest in west Africa by 2018 (US$18·6 in 2001 to $83·75 in 2018). Nonetheless, relative outcomes remained poor; Nigeria ranked sixth in west Africa for age-standardised mortality, seventh for HALE, tenth for YLLs, 12th for health system coverage, and 14th for YLDs in 2019. Malaria (5176·3 YLLs per 100 000 people, 95% UI 2464·0-9591·1) and neonatal disorders (4818·8 YLLs per 100 000, 3865·9-6064·2) were the leading causes of YLLs in Nigeria in 2019. Nigeria had the fourth-highest under-five mortality rate for male individuals (2491·8 deaths per 100 000, 95% UI 1986·1-3140·1) and female individuals (2117·7 deaths per 100 000, 1756·7-2569·1), but among the lowest mortality for men older than 55 years. There was evidence of a growing non-communicable disease burden facing older Nigerians. INTERPRETATION: Health outcomes remain poor in Nigeria despite higher expenditure since 2001. Better outcomes in countries with equivalent or lower health expenditure suggest health system strengthening and targeted intervention to address unsafe water sources, poor sanitation, malnutrition, and exposure to air pollution could substantially improve population health. FUNDING: The Bill & Melinda Gates Foundation.
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- 2022
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27. Valuing multiple eelgrass ecosystem services in Sweden: fish production and uptake of carbon and nitrogen
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Scott Glenn Cole and Per-Olav eMoksnes
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Non-market valuation ,social cost of carbon ,Zostera marina ,Fish production ,Nutrient regulation ,ecological endpoints ,Science ,General. Including nature conservation, geographical distribution ,QH1-199.5 - Abstract
Valuing nature’s benefits in monetary terms is necessary for policy-makers facing trade-offs in how to spend limited financial resources on environmental protection. We provide information to assess trade-offs associated with the management of seagrass beds, which provide a number of ecosystem services, but are presently impacted by many stressors. We develop an interdisciplinary framework for valuing multiple ecosystem services and apply it to the case of eelgrass (Zostera marina), a dominant seagrass species in the northern hemisphere. We identify and quantify links between three eelgrass functions (habitat for fish, carbon and nitrogen uptake) and economic goods in Sweden, quantify these using ecological endpoints, estimate the marginal average value of the impact of losing one hectare of eelgrass along the Swedish northwest coast on welfare in monetary terms, and aggregate these values while considering double-counting. Over a 20 to 50 year period we find that compared to unvegetated habitats, a hectare of eelgrass, including the organic material accumulated in the sediment, produces an additional 626 kg cod fishes and 7,535 wrasse individuals and sequesters 98.6 ton carbon and 466 kg nitrogen. We value the flow of future benefits associated with commercial fishing, avoided climate change damages, and reduced eutrophication at 170,000 SEK in 2014 (20,700 US$) or 11,000 SEK (1,300 US$) annualized at 4%. Fish production, which is the most commonly valued ecosystem service in the seagrass literature, only represented 25% of the total value whereas a conservative estimate of nitrogen regulation constituted 46%, suggesting that most seagrass beds are undervalued. Comparing these values with historic losses of eelgrass we show that the Swedish northwest coast has suffered a substantial reduction in fish production and mineral regulation. Future work should improve the understanding of the geographic scale of eelgrass functions, how local variables affect the value of these functions, and how to defensibly aggregate a multitude of economic values.
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- 2016
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28. Growing a Distributed Ocean Observatory: Our View from the COOL Room
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Scott Glenn and Oscar Schofield
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NOPP ,ocean partnership ,ocean observatory ,Oceanography ,GC1-1581 - Abstract
The Rutgers University (RU) Coastal Ocean Observation Lab (COOL) is an enduring product of the National Oceanographic Partnership Program (NOPP). The key to its longevity is the academic, industry, and government partnerships that were formed through the NOPP process. These partnerships were galvanized by time at sea and then sustained through peer-reviewed proposals. The lab operates an advanced ocean observatory that has maintained a continuous presence on the New Jersey continental shelf since 1992. Key technologies for sustained spatial observations include locally acquired satellite infrared and ocean color imagery, a multistatic high-frequency radar array, and a fleet of autonomous underwater gliders. COOL provides a regional perspective that supports interdisciplinary process studies; provides a test bed, allowing rapid spiral development of sensors and platforms; and has anchored new "campaign" science programs where hundreds of scientists come together for intensive multi-institutional experiments. RU COOL is now a core component of the National Oceanic and Atmospheric Administration Mid-Atlantic Regional Ocean Observing System that, in 2007, began providing data for the full shelf from Cape Cod to Cape Hatteras. Looking to the future, in collaboration with partners from around the globe, the International Consortium of Ocean Observing Labs was formed to focus on improving global ocean observing. The NOPP approach was new and unique when introduced. Its philosophy of partnership among diverse groups was fundamental to the success of COOL and, we believe, will sustain international collaborations into the future.
- Published
- 2009
29. Functional design verification for the PowerPC 601 microprocessor.
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Scott Glenn, Gavin Meil, Ed Rodriguez, and Jeff Brooks
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- 1994
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30. Typhoon-induced Full Vertical Mixing and Subsequent Intrusion of Yangtze Fresh Waters in the Southern Yellow Sea: Observation with an Underwater Glider and GOCI Ocean Color Imagery
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Travis Miles, Dongha Kim, Seung Hwan Jin, Hak Soo Lim, Hee Jun Lee, Minwoo Kim, and Scott Glenn
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Water mass ,Oceanography ,Water column ,Ecology ,Underwater glider ,Ocean color ,Typhoon ,Glider ,Environmental science ,Destratification ,Stratification (water) ,Earth-Surface Processes ,Water Science and Technology - Abstract
Lim, H.S.; Kim, D.; Lee, H.J.; Kim, M.; Jin, S.H.; Miles, T.N., and Glenn, S., 2021. Typhoon-induced full vertical mixing and subsequent intrusion of Yangtze fresh waters in the Southern Yellow Sea: Observation with an underwater glider and GOCI ocean color imagery. In: Lee, J.L.; Suh, K.-S.; Lee, B.; Shin, S., and Lee, J. (eds.), Crisis and Integrated Management for Coastal and Marine Safety. Journal of Coastal Research, Special Issue No. 114, pp. 171–175. Coconut Creek (Florida), ISSN 0749-0208. Typhoons have been regarded as an important forcing to control oceanographic phenomena, particularly in the Yellow and East China Seas. The influences of typhoons have become increasingly severe due to global warming. An autonomous underwater glider was deployed west of Jeju Island for 10 days from 15th to 25th August, 2018 to observe changes in physical environments induced by Typhoon Soulik. The glider data show that the stratified water masses were destroyed by the typhoon into a fully mixed stage of the entire water column. This destratification is manifested by many environmental parameters including temperature, salinity, chlorophyll-a, and suspended sediment concentrations. Accordingly, calculated parameters, density, and Richardson number, indicate de-stratification. The water column displayed, however, a rapid return to the stratification stage immediately after the typhoon passage. In addition, the GOCI geostationary ocean color imagery was analyzed that were obtained during and after the passage of Soulik between 15-25 August, 2018. These satellite images suggest that the discharge of the Yangtze River fresh water so increased during the typhoon that the intensified freshwater plume could move toward Jeju Island. As a result, observations with an autonomous glider may provide a promising means in analyzing oceanographic processes occurring during the peak of typhoons.
- Published
- 2021
31. Weather Research and Forecasting model validation with NREL specifications over the New York/New Jersey Bight for offshore wind development
- Author
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Jaden Dicopoulos, Joseph F. Brodie, Scott Glenn, Josh Kohut, Travis Miles, Greg Seroka, Rich Dunk, and Erick Fredj
- Published
- 2021
32. A Unified Approach to HF Radar Radial Quality Control for Understanding Gulf Ocean Systems
- Author
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Michael Smith, Scott Glenn, Clifford Merz, Yonggang Liu, Robert Weisberg, Lynn Shay, Stephan Howden, and Anthony Knap
- Published
- 2021
33. Development and validation of a miniaturized bacteriophage host range screening assay against antibiotic resistant Pseudomonas aeruginosa
- Author
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Ng, Renee Nicole, primary, Grey, Lucinda Jane, additional, Vaitekenas, Andrew, additional, McLean, Samantha Abagail, additional, Rudrum, Jack Dylan, additional, Laucirica, Daniel Rodolfo, additional, Poh, Matthew Wee-Peng, additional, Hillas, Jessica, additional, Winslow, Scott Glenn, additional, Iszatt, Joshua James, additional, Iosifidis, Thomas, additional, Tai, Anna Sze, additional, Agudelo-Romero, Patricia, additional, Chang, Barbara Jane, additional, Stick, Stephen Michael, additional, and Kicic, Anthony, additional
- Published
- 2021
- Full Text
- View/download PDF
34. Am I My Brother's Keeper?: A Case Study of the Responsibilities of Research
- Author
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Singer, Merrill, Huertas, Elsa, and Scott, Glenn
- Published
- 2000
35. Deleting files in the Celeste peer-to-peer storage system
- Author
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Badishi, Gal, Caronni, Germano, Keidar, Idit, Rom, Raphael, and Scott, Glenn
- Published
- 2009
- Full Text
- View/download PDF
36. Sediment resuspension and transport from a glider integrated Laser In Situ Scattering and Transmissometry (LISST) particle analyzer
- Author
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Scott Glenn, Wayne H. Slade, and Travis Miles
- Subjects
In situ ,Atmospheric Science ,Spectrum analyzer ,Scattering ,law ,Glider ,Environmental science ,Mineralogy ,Particle ,Sediment ,Ocean Engineering ,Laser ,law.invention - Abstract
Suspended particle size and concentration are critical parameters necessary to understand water quality, sediment dynamics, carbon flux, and ecosystem dynamics among other ocean processes. In this study we detail the integration of a Sequoia Scientific, Inc., Laser In situ Scattering and Transmissometry (LISST) sensor into a Teledyne Webb Research Slocum autonomous underwater glider. These sensors are capable of measuring particle size, concentration, and beam attenuation by particles in size ranges from 1.00 to 500 μm at a resolution of 1 Hz. The combination of these two technologies provides the unique opportunity to measure particle characteristics persistently at specific locations, or survey regional domains from a single profiling sensor. In this study we present the sensor integration framework, detail quality assurance and control (QAQC) procedures, as well as provide a case study of storm driven sediment resuspension and transport. Specifically, Rutgers glider RU28 was deployed with an integrated LISST-Glider for 18 days in September of 2017. During this time period it sampled the nearshore environment off of coastal New Jersey, capturing full water column sediment resuspension during a coastal storm event. A novel method for in situ background corrections is demonstrated and used to mitigate long-term bio-fouling of the sensor windows. Additionally, we present a method for removing Schlieren contaminated time periods utilizing coincident conductivity temperature and depth, fluorometer, and optical backscatter data. The combination of LISST sensors and autonomous platforms has the potential to revolutionize our ability to capture suspended particle characteristics throughout the world’s oceans.
- Published
- 2021
37. The Mid-Atlantic Bight Cold Pool, Part-1: Glider Observations
- Author
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Wendell S. Brown, Oscar Schofield, Scott Glenn, Josh Kohut, and William Boicourt
- Abstract
During summer, distinctive, bottom-trapped, cold water mass of remnant local and remote winter water called Cold Pool Water (CPW) resides as a swath over the mid to outer continental shelf throughout much of the Middle Atlantic Bight (MAB). This evolving CPW is important because it strongly influences the ecosystem, including several important fisheries. Thus, there is a priority to better understand the relevant ocean processes and develop CPW forecast capability. Over the past decade, repeated high-resolution Slocum glider measurements of ocean water properties along a New Jersey cross-shelf transect have helped to define the variability of the CPW structure off New Jersey. More recently the Mid-Atlantic Regional Association Coastal Ocean Observing System-supported ocean gliders have occupied a series of along-shelf zigzag trajectories from Massachusetts to New Jersey and New Jersey to Maryland. The comprehensive set of March through November 2007 glider measurements has been used to define the annual evolution of the 10oC Cold Pool in terms of its distribution and water properties. Here we highlight July through October 2007 general warming and salting of the Cold Pool at rates of approximately 1oC per month and 0.06 psu per month. The nominal 100m lateral resolution of the glider measurements enabled us to define the footprint of the 10oC Cold Pool. Assuming a 30m upper layer depth, we estimated Cold Pool volumes varying from 4099 km3 in summer 2007 to 2391 km3 in autumn 2007.
- Published
- 2021
- Full Text
- View/download PDF
38. The Role of the Gulf of Mexico Ocean Conditions in the Intensification of Hurricane Michael (2018)
- Author
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Matthieu Le Hénaff, Travis Miles, Hyun-Sook Kim, Scott Glenn, María Aristizábal, George R. Halliwell, Jun A. Zhang, Ricardo Domingues, and Gustavo Goni
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Geophysics ,Space and Planetary Science ,Geochemistry and Petrology ,Earth and Planetary Sciences (miscellaneous) ,Environmental science ,Oceanography - Published
- 2021
39. "Union-Minded": Women in the Texas ILGWU, 1933-50
- Author
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Hield, Melissa, Scott, Glenn, Flores, Maria, Croxdale, Richard, and Rabinovitz, Lauren
- Published
- 1979
- Full Text
- View/download PDF
40. TIGHT LINES.
- Author
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REEVES, PAT, CARLETON, ROGER, BRIDGES, DAVID, THOMAS, RICK, VARVAIS, DAN, SMITH, KIRBY, SCOTT, GLENN, and GREEN, AUSTIN B.
- Abstract
The article discusses various topics related to fly fishing. It highlights the resurgence of Yellowstone cutthroat trout in Yellowstone National Park and praises the efforts of Dr. Todd Koel and his team in restoring their populations. The article also mentions the use of gill-net caught lake trout flesh and soy pellets as substitutes for covering lake trout eggs. It encourages readers to participate in the Yellowstone Fly Fishing Volunteer Program to aid in the recovery of Yellowstone cutthroats. Additionally, the article mentions other fishing experiences such as fishing in Diego Garcia, the slot canyon on Yosemite Falls, and landlocked stripers in freshwater lakes. The article also includes reader feedback and appreciation for the magazine. [Extracted from the article]
- Published
- 2024
41. Development and validation of a miniaturized host range screening assay for bacteriophages
- Author
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Samantha Abagail McLean, Joshua James Iszatt, Barbara Jane Chang, Thomas Iosifidis, Matthew Wee-Peng Poh, Jessica Hillas, Lucinda Jean Grey, Andrew Vaitekenas, Anthony Kicic, Daniel R. Laucirica, Scott Glenn Winslow, Anna Sze Tai, Patricia Agudelo-Romero, Renee Nicole Ng, and Stephen M. Stick
- Subjects
biology ,medicine.drug_class ,Pseudomonas aeruginosa ,Petri dish ,Antibiotics ,biology.organism_classification ,Antimicrobial ,medicine.disease_cause ,law.invention ,Microbiology ,Bacteriophage ,Multiple drug resistance ,Antibiotic resistance ,Lytic cycle ,law ,medicine - Abstract
Antimicrobial resistance is a global health crisis, partly contributed by inappropriate use of antibiotics. The increasing emergence of multidrug resistant infections has led to the resurgent interest in bacteriophages as an alternative treatment. Current procedures assessing susceptibility and breadth of host range to bacteriophage are conducted using large-scale manual processes that are labor-intensive. The aim here was to establish and validate a scaled down methodology for high-throughput screening in order to reduce procedural footprint. Bacteriophages were isolated from wastewater samples and screened for specificity against 29 clinical Pseudomonas aeruginosa isolates and PA01 using a spot test (2 μL/ drop). Host range assessment was performed on four representative P. aeruginosa isolates using both double agar overlay assay on petri dishes and 24-well culture plates. The breadth of host range of bacteriophages that exhibited lytic activity on P. aeruginosa isolates were corroborated between the current standard practice of whole plate phage assay and 24-well phage assay. The high correlation achieved in this study confirms miniaturization as the first step in future automation that could test phage diversity and efficacy as antimicrobials.
- Published
- 2021
42. Shared effects of genetic and intrauterine and perinatal environment on the development of metabolic syndrome.
- Author
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Patricia M Vuguin, Kirsten Hartil, Michael Kruse, Harpreet Kaur, Chia-Lei Vivian Lin, Ariana Fiallo, Alan Scott Glenn, Avanee Patel, Lyda Williams, Yoshinori Seki, Ellen B Katz, and Maureen J Charron
- Subjects
Medicine ,Science - Abstract
Genetic and environmental factors, including the in utero environment, contribute to Metabolic Syndrome. Exposure to high fat diet exposure in utero and lactation increases incidence of Metabolic Syndrome in offspring. Using GLUT4 heterozygous (G4+/-) mice, genetically predisposed to Type 2 Diabetes Mellitus, and wild-type littermates we demonstrate genotype specific differences to high fat in utero and lactation. High fat in utero and lactation increased adiposity and impaired insulin and glucose tolerance in both genotypes. High fat wild type offspring had increased serum glucose and PAI-1 levels and decreased adiponectin at 6 wks of age compared to control wild type. High fat G4+/- offspring had increased systolic blood pressure at 13 wks of age compared to all other groups. Potential fetal origins of adult Metabolic Syndrome were investigated. Regardless of genotype, high fat in utero decreased fetal weight and crown rump length at embryonic day 18.5 compared to control. Hepatic expression of genes involved in glycolysis, gluconeogenesis, oxidative stress and inflammation were increased with high fat in utero. Fetal serum glucose levels were decreased in high fat G4+/- compared to high fat wild type fetuses. High fat G4+/-, but not high fat wild type fetuses, had increased levels of serum cytokines (IFN-γ, MCP-1, RANTES and M-CSF) compared to control. This data demonstrates that high fat during pregnancy and lactation increases Metabolic Syndrome male offspring and that heterozygous deletion of GLUT4 augments susceptibility to increased systolic blood pressure. Fetal adaptations to high fat in utero that may predispose to Metabolic Syndrome in adulthood include changes in fetal hepatic gene expression and alterations in circulating cytokines. These results suggest that the interaction between in utero-perinatal environment and genotype plays a critical role in the developmental origin of health and disease.
- Published
- 2013
- Full Text
- View/download PDF
43. Annual and Seasonal Surface Circulation Over the Mid‐Atlantic Bight Continental Shelf Derived From a Decade of High Frequency Radar Observations
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Teresa Updyke, Wendell S. Brown, Donglai Gong, Michael W. Smith, Mike Muglia, Joseph F. Brodie, Josh Kohut, Harvey E. Seim, Laura Nazzaro, Haixing Wang, Larry P. Atkinson, Hugh Roarty, Ethan Handel, William C. Boicourt, and Scott Glenn
- Subjects
geography ,geography.geographical_feature_category ,Continental shelf ,Oceanography ,Wind speed ,Radar observations ,Geophysics ,Circulation (fluid dynamics) ,Space and Planetary Science ,Geochemistry and Petrology ,Remote sensing (archaeology) ,Earth and Planetary Sciences (miscellaneous) ,Geology - Abstract
A decade (2007–2016) of hourly 6-km-resolution maps of the surface currents across the Mid-Atlantic Bight (MAB) generated by a regional-scale High Frequency Radar network are used to reveal new insights into the spatial patterns of the annual and seasonal mean surface flows. Across the 10-year time series, temporal means and interannual and intra-annual variability are used to quantify the variability of spatial surface current patterns. The 10-year annual mean surface flows are weaker and mostly cross-shelf near the coast, increasing in speed and rotating to more alongshore directions near the shelfbreak, and increasing in speed and rotating to flow off-shelf in the southern MAB. The annual mean surface current pattern is relatively stable year to year compared to the hourly variations within a year. The 10-year seasonal means exhibit similar current patterns, with winter and summer more cross-shore while spring and fall transitions are more alongshore. Fall and winter mean speeds are larger and correspond to when mean winds are stronger and cross-shore. Summer mean currents are weakest and correspond to a time when the mean wind opposes the alongshore flow. Again, intra-annual variability is much greater than interannual, with the fall season exhibiting the most interseasonal variability in the surface current patterns. The extreme fall seasons of 2009 and 2011 are related to extremes in the wind and river discharge events caused by different persistent synoptic meteorological conditions, resulting in more or less rapid fall transitions from stratified summer to well-mixed winter conditions.
- Published
- 2020
44. Validation of the HWRF-POM and HWRF-HYCOM hurricane forecasting systems during Hurricane Dorian using glider observations
- Author
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Travis Miles, Hyun-Sook Kim, Scott Glenn, Maria F. Aristizabal-Vargas, and Avichal Mehra
- Subjects
Sea surface temperature ,Meteorology ,Hurricane Weather Research and Forecasting model ,Underwater glider ,Glider ,Environmental science ,Storm ,Atmospheric model ,Tropical cyclone ,Ocean heat content - Abstract
Hurricane Dorian devastated the Bahamas in August 2019 when it underwent rapid intensification and transitioned from a category 4 to a category 5 storm. The operational hurricane forecasting models consistently under predicted the intensity evolution of Dorian. It has been shown that an accurate representation of the upper ocean processes that affect air-sea heat fluxes in coupled atmospheric-ocean models is necessary for an accurate hurricane intensity forecast. In this work, we evaluate several ocean surface metrics that are relevant to air-sea heat fluxes in one of NOAA's operational hurricane forecasting systems during the 2019 hurricane season: HWRF2019-POM initialized from climatology, and two experimental hurricane forecasting models: HWRF2020-POM and HWRF2020-HYCOM, both initialized from the Real Time Ocean Forecasting System (RTOFS). For this, we use temperature and salinity data from a fleet of autonomous underwater gliders, dedicated to hurricane research and operations, during the passage of Hurricane Dorian through the Caribbean. We contrast our results with estimates from a data assimilative model, the Global Ocean Forecasting System (GOFS 3.1). We found that even though all the models have a good skill in predicting temperature and salinity over the full water column, the model's skill considerably deteriorates for the ocean surface metrics evaluated. We also found that of the three hurricane forecasting models, HWRF2020-HYCOM is the model with the highest skill for the ocean surface metrics. All the models also show a cold bias in the mixed layer temperature and a deficit in the ocean heat content with respect to the glider observations. These results demonstrate that the implementation of HYCOM as the ocean model underneath the hurricane forecasting models, will significantly improve the representation of key quantities that are important for the air-sea heat fluxes during tropical cyclones.
- Published
- 2020
45. Sea Breeze Sensitivity to Coastal Upwelling and Synoptic Flow Using Lagrangian Methods
- Author
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Josh Kohut, Scott Glenn, Erick Fredj, Rich Dunk, Greg Seroka, and Travis Miles
- Subjects
Atmospheric Science ,010504 meteorology & atmospheric sciences ,Flow (psychology) ,Atmospheric model ,01 natural sciences ,010305 fluids & plasmas ,Offshore wind power ,symbols.namesake ,Geophysics ,Oceanography ,Space and Planetary Science ,Sea breeze ,0103 physical sciences ,Earth and Planetary Sciences (miscellaneous) ,symbols ,Upwelling ,Environmental science ,Coastal oceanography ,Sensitivity (control systems) ,Lagrangian ,0105 earth and related environmental sciences - Published
- 2018
46. Workforce Development Supporting the Blue Economy: Using Recent Community-Developed Material in Operational Oceanography Curricula
- Author
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Josh Kohut, Janice McDonnell, Oscar Schofield, Scott Glenn, Mark Bushnell, Travis Miles, and Grace Saba
- Subjects
0106 biological sciences ,Engineering ,business.industry ,010604 marine biology & hydrobiology ,Tribute ,Operational oceanography ,Ocean Engineering ,Oceanography ,Workforce development ,01 natural sciences ,Management ,Blue economy ,business ,Curriculum - Published
- 2018
47. Developing Practical Data Skills in Undergraduate Students Using Ocean Observatories
- Author
-
Grace Saba, Scott Glenn, Hugh Roarty, Travis Miles, Oscar Schofield, Janice McDonnell, and J. Kohut
- Subjects
Engineering ,business.industry ,0502 economics and business ,05 social sciences ,ComputingMilieux_COMPUTERSANDEDUCATION ,050301 education ,Ocean Engineering ,050207 economics ,Oceanography ,business ,0503 education - Abstract
Developing the workforce to meet the needs of the blue economy will require changing undergraduate marine science programs to provide a wider range of skills developed by “doing” rather than just “reading.” Students also need training on how to effectively work in a team, critically analyze data, and be able to clearly communicate key points. With that in mind, we developed a new undergraduate course (called Ocean Observing) focused on conducting research by analyzing data collected and delivered to shore in near real time from the growing global network of ocean observatories. The course structure is based on student teams that use data to develop a range of data products, many of which have been suggested by state and federal agencies as well as from maritime companies. Students can take the Ocean Observing course repeatedly throughout their undergraduate career. A complimentary second entry course (called Oceanography House) was developed to entrain freshmen first-term students into research on their first semester on campus. The Ocean Observing course has increased the number of marine science majors and the overall diversity of the marine science program and resulted in a dramatic increase in the number of independent student theses conducted each year. Over the last 10 years, student data profiles from the course emphasize the importance of conducting research in a public way so students can partake in the “adventure” of research before the outcome is known. To increase the public visibility of these “adventures,” collaborations between departments across the campus have developed nationally broadcast documentaries and outreach materials. Going forward, we seek to build on this success by developing an accelerated Masters of Operational Oceanography and link these undergraduate students with external companies through externships and coordinated research projects.
- Published
- 2018
48. Development and validation of a miniaturized host range screening assay for bacteriophages
- Author
-
Ng, Renee Nicole, primary, Grey, Lucinda Jean, additional, Vaitekenas, Andrew, additional, McLean, Samantha Abagail, additional, Laucirica, Daniel Rodolfo, additional, Poh, Matthew Wee-Peng, additional, Hillas, Jessica, additional, Winslow, Scott Glenn, additional, Iszatt, Joshua James, additional, Iosifidis, Thomas, additional, Tai, Anna Sze, additional, Agudelo-Romero, Patricia, additional, Chang, Barbara Jane, additional, Stick, Stephen Michael, additional, and Kicic, Anthony, additional
- Published
- 2021
- Full Text
- View/download PDF
49. Henry Luce’s American & Chinese Century: An Analysis of US News Magazines’ Coverage of General Chiang Kai-shek from 1936 to 1949
- Author
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Haygood, Daniel M., primary and Scott, Glenn W., additional
- Published
- 2021
- Full Text
- View/download PDF
50. Transformative Ocean Observing for Hurricane Forecasting, Readiness, and Response in the Caribbean Tropical Storm Corridor
- Author
-
Scott Glenn, Anthony H. Knap, Travis Miles, Cesar Toro, and W. Douglas Wilson
- Subjects
Geography ,Oceanography ,Transformative learning ,Ocean Engineering ,Tropical cyclone - Abstract
The upper ocean in the Western Tropical Atlantic tropical storm corridor—including the Caribbean Sea—is under-sampled and climatologically warming (Figure 1). Regionally varying Essential Ocean Features impacting tropical cyclone dynamics include fresh water upper ocean layers, mesoscale eddies, high Upper Ocean Heat Content values, and inflows from the Subtropical and Equatorial Atlantic. Ongoing research indicates that hurricane intensity forecasts can be improved with expanded and sustained ocean data collection and utilization along the hurricane path.This proposed activity will build supporting physical and social infrastructure and conduct a long-term sampling program in this critical region using gliders, High Frequency Radars (HFR), and developing technologies to provide real-time information resulting in hurricane forecast improvement. Improved forecasts will support new generation of local storm surge/precipitation/wave and coastal impact models and guidance used to directly enhance resilience.The success of this project will depend on the merger of regional scale planning and management AND development of local-level partnerships for implementation. To be sustainable, operational, analytical, and actionable, capability has to exist at the multiple proposed regional system nodes. We will promote expanded education and workforce development using existing partner capabilities, and include an Ocean Observing for SIDS/Developing Economies component. Product and information delivery systems will have local interpretive support and will incorporate local knowledge and expertise.It is our hope that by 2030 our legacy would be successful program to—in the words of the Decade Action Framework—“sustain long-term high-quality observations of marine and coastal environments including human interactions and deliver forecast and decision-support tools.”
- Published
- 2021
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