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916 results on '"Frankenberg, Christian"'

205. Satellite-based characterization of methane point sources in the Permian Basin

Author

Irakulis-Loitxate, Itziar, primary, Guanter, Luis, additional, Liu, Yin-Nian, additional, Varon, Daniel J., additional, Maasakkers, Joannes D., additional, Zhang, Yuzhong, additional, Chulakadabba, Apisada, additional, Wofsy, Steven C., additional, Thorpe, Andrew K., additional, Duren, Riley M., additional, Frankenberg, Christian, additional, Lyon, David, additional, Cusworth, Daniel H., additional, Zhang, Yongguang, additional, Segl, Karl, additional, Gorroño, Javier, additional, Sánchez-García, Elena, additional, Sulprizio, Melissa P., additional, Aben, Ilse, additional, and Jacob, Daniel J., additional

Published
2021
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206. Observed impacts of COVID-19 on urban CO₂ emissions

Author

Turner, Alexander J., Kim, Jinsol, Fitzmaurice, Helen, Newman, Catherine, Worthington, Kevin, Chan, Katherine, Wooldridge, Paul J., Köhler, Philipp, Frankenberg, Christian, and Cohen, Ronald C.

Abstract

Governments restricted mobility and effectively shuttered much of the global economy in response to the COVID‐19 pandemic. Six San Francisco Bay Area counties were the first region in the United States to issue a “shelter‐in‐place” order asking non‐essential workers to stay home. Here we use CO₂ observations from 35 Berkeley Environment, Air‐quality and CO₂ Network (BEACO₂N) nodes and an atmospheric transport model to quantify changes in urban CO₂ emissions due to the order. We infer hourly emissions at 900‐m spatial resolution for 6 weeks before and 6 weeks during the order. We observe a 30% decrease in anthropogenic CO₂ emissions during the order and show that this decrease is primarily due to changes in traffic (–48%) with pronounced changes to daily and weekly cycles; non‐traffic emissions show small changes (–8%). These findings provide a glimpse into a future with reduced CO₂ emissions through electrification of vehicles.

Published
2020

207. Regional Surveys of CH₄ Point Sources Across North America: Campaigns, Algorithms, and Results

Author

Thompson, David R., Bue, Brian D., Duren, Riley, Elder, Clayton D., and Frankenberg, Christian

Abstract

The last five years have seen dramatic growth in the use of Visible Shortwave Infrared (VSWIR) and Thermal Infrared (TIR) imaging spectrometers to detect and characterize greenhouse methane sources. Targets include: dairy and animal husbandry emissions; landfills; fossil fuel extraction, storage, and transport infrastructure; geologic sources; natural emissions associated with sensitive arctic ecosystems; and more. These campaigns have resulted in significant new discoveries and advances in our understanding of the North American CH4 budget. Recent algorithm improvements have been critical for these campaigns, enabling robust statistical CH₄ measurement, fully-automated image-space source identification, and quantification of flux. Here we survey recent campaigns by NASA's Next Generation Airborne Visible Infrared Imaging Spectrometer (AVIRIS-NG) and NASA's Hyperspectral Thermal Emission Spectrometer (HyTES). We describe their algorithmic advances and major findings.

Published
2020

208. Systematic Assessment of Retrieval Methods for Canopy Far-Red Solar-Induced Chlorophyll Fluorescence Using High-Frequency Automated Field Spectroscopy

Author

Chang, Christine Y., Guanter, Luis, Frankenberg, Christian, Köhler, Philipp, Gu, Lianhong, Magney, Troy S., Grossmann, Katja, and Sun, Ying

Abstract

Remote sensing of solar‐induced chlorophyll fluorescence (SIF) offers potential to infer photosynthesis across scales and biomes. Many retrieval methods have been developed to estimate top‐of‐canopy SIF using ground‐based spectroscopy. However, inconsistencies among methods may confound interpretation of SIF dynamics, eco‐physiological/environmental drivers, and its relationship with photosynthesis. Using high temporal‐ and spectral resolution ground‐based spectroscopy, we aimed to (1) evaluate performance of SIF retrieval methods under diverse sky conditions using continuous field measurements; (2) assess method sensitivity to fluctuating light, reflectance, and fluorescence emission spectra; and (3) inform users for optimal ground‐based SIF retrieval. Analysis included field measurements from bi‐hemispherical and hemispherical‐conical systems and synthetic upwelling radiance constructed from measured downwelling radiance, simulated reflectance, and simulated fluorescence for benchmarking. Fraunhofer‐based differential optical absorption spectroscopy (DOAS) and singular vector decomposition (SVD) retrievals exhibit convergent SIF‐PAR relationships and diurnal consistency across different sky conditions, while O₂A‐based spectral fitting method (SFM), SVD, and modified Fraunhofer line discrimination (3FLD) exhibit divergent SIF‐PAR relationships across sky conditions. Such behavior holds across system configurations, though hemispherical‐conical systems diverge less across sky conditions. O₂A retrieval accuracy, influenced by atmospheric distortion, improves with a narrower fitting window and when training SVD with temporally local spectra. This may impact SIF‐photosynthesis relationships interpreted by previous studies using O₂A‐based retrievals with standard (759–767.76 nm) fitting windows. Fraunhofer‐based retrievals resist atmospheric impacts but are noisier and more sensitive to assumed SIF spectral shape than O₂A‐based retrievals. We recommend SVD or SFM using reduced fitting window (759.5–761.5 nm) for robust far‐red SIF retrievals across sky conditions.

Published
2020

209. Cropland Carbon Uptake Delayed and Reduced by 2019 Midwest Floods

Author

Yin, Yi, Byrne, Brendan, Liu, Junjie, Wennberg, Paul O., Davis, Kenneth J., Magney, Troy, Köhler, Philipp, He, Liyin, Jeyaram, Rupesh, Humphrey, Vincent, Gerken, Tobias, Feng, Sha, DiGangi, Joshua P., and Frankenberg, Christian

Abstract

While large‐scale floods directly impact human lives and infrastructures, they also profoundly impact agricultural productivity. New satellite observations of vegetation activity and atmospheric CO₂ offer the opportunity to quantify the effects of such extreme events on cropland carbon sequestration. Widespread flooding during spring and early summer 2019 induced conditions that delayed crop planting across the U.S. Midwest. As a result, satellite observations of solar‐induced chlorophyll fluorescence from TROPOspheric Monitoring Instrument and Orbiting Carbon Observatory reveal a 16‐day shift in the seasonal cycle of photosynthesis relative to 2018, along with a 15% lower peak value. We estimate a reduction of 0.21 PgC in cropland gross primary productivity in June and July, partially compensated in August and September (+0.14 PgC). The extension of the 2019 growing season into late September is likely to have benefited from increased water availability and late‐season temperature. Ultimately, this change is predicted to reduce the crop productivity in the Midwest Corn/Soy belt by ~15% compared to 2018. Using an atmospheric transport model, we show that a decline of ~0.1 PgC in the net carbon uptake during June and July is consistent with observed CO₂ enhancements of up to 10 ppm in the midday boundary layer from Atmospheric Carbon and Transport‐America aircraft and over 3 ppm in column‐averaged dry‐air mole fractions from Orbiting Carbon Observatory. This study quantifies the impact of floods on cropland productivity and demonstrates the potential of combining solar‐induced chlorophyll fluorescence with atmospheric CO₂ observations to monitor regional carbon flux anomalies.

Published
2020

210. Global and Time-Resolved Monitoring of Crop Photosynthesis with Chlorophyll Fluorescence

Author

Guanter, Luis, Zhang, Yongguang, Jung, Martin, Joiner, Joanna, Voigt, Maximilian, Berry, Joseph A, Frankenberg, Christian, Huete, Alfredo R, Zarco-Tejada, Pablo, Lee, Jung-Eun, Moran, M. Susan, Ponce-Campos, Guillermo, Beer, Christian, Camps-Valls, Gustavo, Buchmann, Nina, Gianelle, Damiano, Klumpp, Katja, Cescatti, Alessandro, Baker, John M, and Griffis, Timothy J

Subjects
Meteorology And Climatology, Earth Resources And Remote Sensing
Abstract

Photosynthesis is the process by which plants harvest sunlight to produce sugars from carbon dioxide and water. It is the primary source of energy for all life on Earth; hence it is important to understand how this process responds to climate change and human impact. However, model-based estimates of gross primary production (GPP, output from photosynthesis) are highly uncertain, in particular over heavily managed agricultural areas. Recent advances in spectroscopy enable the space-based monitoring of sun-induced chlorophyll fluorescence (SIF) from terrestrial plants. Here we demonstrate that spaceborne SIF retrievals provide a direct measure of the GPP of cropland and grassland ecosystems. Such a strong link with crop photosynthesis is not evident for traditional remotely sensed vegetation indices, nor for more complex carbon cycle models. We use SIF observations to provide a global perspective on agricultural productivity. Our SIF-based crop GPP estimates are 50-75% higher than results from state-of-the-art carbon cycle models over, for example, the US Corn Belt and the Indo-Gangetic Plain, implying that current models severely underestimate the role of management. Our results indicate that SIF data can help us improve our global models for more accurate projections of agricultural productivity and climate impact on crop yields. Extension of our approach to other ecosystems, along with increased observational capabilities for SIF in the near future, holds the prospect of reducing uncertainties in the modeling of the current and future carbon cycle.

Published
2014
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211. The Global Methane Budget 2000-2017

Author

Saunois, Marielle, Stavert, Ann R., Poulter, Ben, Bousquet, Philippe, Canadell, Josep G., Jackson, Robert B., Raymond, Peter A., Dlugokencky, Edward J., Houweling, Sander, Patra, Prabir K., Ciais, Philippe, Arora, Vivek K., Bastviken, David, Bergamaschi, Peter, Blake, Donald R., Brailsford, Gordon, Bruhwiler, Lori, Carlson, Kimberly M., Carrol, Mark, Castaldi, Simona, Chandra, Naveen, Crevoisier, Cyril, Crill, Patrick M., Covey, Kristofer, Curry, Charles L., Etiope, Giuseppe, Frankenberg, Christian, Gedney, Nicola, Hegglin, Michaela I, Hoglund-Isaksson, Lena, Hugelius, Gustaf, Ishizawa, Misa, Ito, Akihiko, Janssens-Maenhout, Greet, Jensen, Katherine M., Joos, Fortunat, Kleinen, Thomas, Krummel, Paul B., Langenfelds, Ray L., Laruelle, Goulven G., Liu, Licheng, Machida, Toshinobu, Maksyutov, Shamil, McDonald, Kyle C., McNorton, Joe, Miller, Paul A., Melton, Joe R., Morino, Isamu, Muller, Jurek, Murguia-Flores, Fabiola, Naik, Vaishali, Niwa, Yosuke, Noce, Sergio, Doherty, Simon O., Parker, Robert J., Peng, Changhui, Peng, Shushi, Peters, Glen P., Prigent, Catherine, Prinn, Ronald, Ramonet, Michel, Regnier, Pierre, Riley, William J., Rosentreter, Judith A., Segers, Arjo, Simpson, Isobel J., Shi, Hao, Smith, Steven J., Steele, L. Paul, Thornton, Brett F., Tian, Hanqin, Tohjima, Yasunori, Tubiello, Francesco N., Tsuruta, Aki, Viovy, Nicolas, Voulgarakis, Apostolos, Weber, Thomas S., van Weele, Michiel, van der Werf, Guido R., Weiss, Ray F., Worthy, Doug, Wunch, Debra, Yin, Yi, Yoshida, Yukio, Zhang, Wenxin, Zhang, Zhen, Zhao, Yuanhong, Zheng, Bo, Zhu, Qing, Zhu, Qiuan, Zhuang, Qianlai, Saunois, Marielle, Stavert, Ann R., Poulter, Ben, Bousquet, Philippe, Canadell, Josep G., Jackson, Robert B., Raymond, Peter A., Dlugokencky, Edward J., Houweling, Sander, Patra, Prabir K., Ciais, Philippe, Arora, Vivek K., Bastviken, David, Bergamaschi, Peter, Blake, Donald R., Brailsford, Gordon, Bruhwiler, Lori, Carlson, Kimberly M., Carrol, Mark, Castaldi, Simona, Chandra, Naveen, Crevoisier, Cyril, Crill, Patrick M., Covey, Kristofer, Curry, Charles L., Etiope, Giuseppe, Frankenberg, Christian, Gedney, Nicola, Hegglin, Michaela I, Hoglund-Isaksson, Lena, Hugelius, Gustaf, Ishizawa, Misa, Ito, Akihiko, Janssens-Maenhout, Greet, Jensen, Katherine M., Joos, Fortunat, Kleinen, Thomas, Krummel, Paul B., Langenfelds, Ray L., Laruelle, Goulven G., Liu, Licheng, Machida, Toshinobu, Maksyutov, Shamil, McDonald, Kyle C., McNorton, Joe, Miller, Paul A., Melton, Joe R., Morino, Isamu, Muller, Jurek, Murguia-Flores, Fabiola, Naik, Vaishali, Niwa, Yosuke, Noce, Sergio, Doherty, Simon O., Parker, Robert J., Peng, Changhui, Peng, Shushi, Peters, Glen P., Prigent, Catherine, Prinn, Ronald, Ramonet, Michel, Regnier, Pierre, Riley, William J., Rosentreter, Judith A., Segers, Arjo, Simpson, Isobel J., Shi, Hao, Smith, Steven J., Steele, L. Paul, Thornton, Brett F., Tian, Hanqin, Tohjima, Yasunori, Tubiello, Francesco N., Tsuruta, Aki, Viovy, Nicolas, Voulgarakis, Apostolos, Weber, Thomas S., van Weele, Michiel, van der Werf, Guido R., Weiss, Ray F., Worthy, Doug, Wunch, Debra, Yin, Yi, Yoshida, Yukio, Zhang, Wenxin, Zhang, Zhen, Zhao, Yuanhong, Zheng, Bo, Zhu, Qing, Zhu, Qiuan, and Zhuang, Qianlai

Abstract

Understanding and quantifying the global methane (CH4) budget is important for assessing realistic pathways to mitigate climate change. Atmospheric emissions and concentrations of CH4 continue to increase, making CH4 the second most important human-influenced greenhouse gas in terms of climate forcing, after carbon dioxide (CO2). The relative importance of CH4 compared to CO2 depends on its shorter atmospheric lifetime, stronger warming potential, and variations in atmospheric growth rate over the past decade, the causes of which are still debated. Two major challenges in reducing uncertainties in the atmospheric growth rate arise from the variety of geographically overlapping CH4 sources and from the destruction of CH4 by short-lived hydroxyl radicals (OH). To address these challenges, we have established a consortium of multidisciplinary scientists under the umbrella of the Global Carbon Project to synthesize and stimulate new research aimed at improving and regularly updating the global methane budget. Following Saunois et al. (2016), we present here the second version of the living review paper dedicated to the decadal methane budget, integrating results of top-down studies (atmospheric observations within an atmospheric inverse-modelling framework) and bottom-up estimates (including process-based models for estimating land surface emissions and atmospheric chemistry, inventories of anthropogenic emissions, and data-driven extrapolations). For the 2008-2017 decade, global methane emissions are estimated by atmospheric inversions (a top-down approach) to be 576 Tg CH4 yr(-1) (range 550-594, corresponding to the minimum and maximum estimates of the model ensemble). Of this total, 359 Tg CH4 yr(-1) or similar to 60 % is attributed to anthropogenic sources, that is emissions caused by direct human activity (i.e. anthropogenic emissions; range 336-376 Tg CH4 yr(-1) or 50 %-65 %). The mean annual total emission for the new decade (2008-2017) is 29 Tg CH4 yr(-1) larger, Funding Agencies|FAO

Published
2020
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212. Extreme events driving year-to-year differences in gross primary productivity across the US

Author

Turner, Alexander J., Köhler, Philipp, Magney, Troy S., Frankenberg, Christian, Fung, Inez, Cohen, Ronald C., Turner, Alexander J., Köhler, Philipp, Magney, Troy S., Frankenberg, Christian, Fung, Inez, and Cohen, Ronald C.

Abstract

Solar-Induced chlorophyll Fluorescence (SIF) has previously been shown to strongly correlate with gross primary productivity (GPP), however this relationship has not yet been quantified for the recently launched TROPOspheric Monitoring Instrument (TROPOMI). Here we use a Gaussian mixture model to develop a parsimonious relationship between SIF from TROPOMI and GPP from flux towers across the conterminous United States (CONUS). The mixture model indicates the SIF-GPP relationship can be characterized by a linear model with two terms. We then estimate GPP across CONUS at 500-m spatial resolution over a 16-day moving window. We find that CONUS GPP varies by less than 4% between 2018 and 2019. However, we observe four extreme precipitation events that induce regional GPP anomalies: drought in west Texas, flooding in the midwestern US, drought in South Dakota, and drought in California. Taken together, these events account for 28% of the year-to-year GPP differences across CONUS.

Published
2020

213. Overview and Analysis of ACOS B3.4 XCO2

Author

O'Dell, Chris, Polonsky, Igor, Frankenberg, Christian, Crisp, David, Eldering, Annmarie, Gunson, Michael, Wunch, Debra, Wennberg, Paul, Basu, Sourish, and Chevallier, Frederic

Subjects
Geosciences (General)
Published
2013

214. Detection and quantification of CH<sub>4</sub> plumes using the WFM-DOAS retrieval on AVIRIS-NG hyperspectral data

Author

Borchardt, Jakob, primary, Gerilowski, Konstantin, additional, Krautwurst, Sven, additional, Bovensmann, Heinrich, additional, Thorpe, Andrew K., additional, Thompson, David R., additional, Frankenberg, Christian, additional, Miller, Charles E., additional, Duren, Riley M., additional, and Burrows, John Philip, additional

Published
2021
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216. Multisatellite Imaging of a Gas Well Blowout Enables Quantification of Total Methane Emissions

Author

Cusworth, Daniel H., primary, Duren, Riley M., additional, Thorpe, Andrew K., additional, Pandey, Sudhanshu, additional, Maasakkers, Joannes D., additional, Aben, Ilse, additional, Jervis, Dylan, additional, Varon, Daniel J., additional, Jacob, Daniel J., additional, Randles, Cynthia A., additional, Gautam, Ritesh, additional, Omara, Mark, additional, Schade, Gunnar W., additional, Dennison, Philip E., additional, Frankenberg, Christian, additional, Gordon, Deborah, additional, Lopinto, Ettore, additional, and Miller, Charles E., additional

Published
2021
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217. Seasonal variation in the canopy color of temperate evergreen conifer forests

Author

Seyednasrollah, Bijan, primary, Bowling, David R., additional, Cheng, Rui, additional, Logan, Barry A., additional, Magney, Troy S., additional, Frankenberg, Christian, additional, Yang, Julia C., additional, Young, Adam M., additional, Hufkens, Koen, additional, Arain, M. Altaf, additional, Black, T. Andrew, additional, Blanken, Peter D., additional, Bracho, Rosvel, additional, Jassal, Rachhpal, additional, Hollinger, David Y., additional, Law, Beverly E., additional, Nesic, Zoran, additional, and Richardson, Andrew D., additional

Published
2020
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218. Technical note: Common ambiguities in plant hydraulics.

Author

Yujie Wang and Frankenberg, Christian

Subjects
HYDRAULICS, PRESSURE drop (Fluid dynamics), WATER pressure, AMBIGUITY, STOMATA
Abstract

Plant hydraulics gains increasing interest in plant eco-physiology and vegetation modeling. However, the hydraulic properties and profiles are often improperly represented thus leading to biased results and simulations, e.g., the neglection of gravitational pressure drop results in overestimated water flux. We highlight the commonly seen ambiguities and/or misunderstandings in plant hydraulics, including (1) distinction between water potential and pressure, (2) differences among hydraulic 5 conductance and conductivity, (3) xylem vulnerability curve formulations, (4) stomatal model representations, (5) bias from analytic estimations, (6) whole plant vulnerability, and (7) neglected temperature dependencies. We recommend careful thinking before using or modifying existing definitions, methods, and models. [ABSTRACT FROM AUTHOR]

Published
2022
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219. Continuous ground monitoring of vegetation optical depth and water content with GPS signals.

Author

Humphrey, Vincent and Frankenberg, Christian

Subjects
VEGETATION monitoring, GLOBAL Positioning System, MICROWAVE remote sensing, WATER depth, GROUND vegetation cover
Abstract

Satellite microwave remote sensing techniques can be used to monitor vegetation optical depth (VOD), a metric which is directly linked to vegetation biomass and water content. However, these large- scale measurements are still difficult to reference against either rare or not directly comparable field observations. So far, in-situ estimates of biomass or water status often rely on infrequent and time- consuming samplings, which are not necessarily representative of the canopy scale. Here, we present a simple technique based on Global Navigation Satellite Systems (GNSS) with the potential to bridge this persisting scale gap. Because GNSS microwave signals are attenuated and scattered by vegetation and liquid water, placing a GNSS sensor under a vegetated canopy and measuring changes in signal quality over time can provide continuous information on VOD, and thus on vegetation biomass and water content. We test this technique at forested site in Southern California for a period of 8 months. We show that variations in GNSS signal to noise ratios reflect the overall distribution of biomass density in the canopy and can be monitored continuously. For the first time, we show that this technique can resolve diurnal variations in VOD and canopy water content at hourly to sub-hourly time steps. Using a model of canopy transmissivity to assess these diurnal signals, we find that temperature effects on the vegetation dielectric constant, and thus on VOD, may be non-negligible at the diurnal scale or during extreme events like heatwaves. The rainfall and dew deposition events also suggest that canopy water interception can be monitored with this approach. The technique presented here has the potential to resolve two important knowledge gaps, namely the lack of ground truth observations for satellite-based VOD, as well as the need of a reliable proxy to extrapolate isolated and labour-intensive in-situ measurements of biomass, canopy water content, or leaf water potential. We provide recommendations for deploying such off-the- shelf and easy-to-use radar systems at existing ecohydrological monitoring networks such as FluxNet or SapfluxNet. [ABSTRACT FROM AUTHOR]

Published
2022
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221. Observed Impacts of COVID‐19 on Urban CO2 Emissions

Author

Turner, Alexander J., primary, Kim, Jinsol, additional, Fitzmaurice, Helen, additional, Newman, Catherine, additional, Worthington, Kevin, additional, Chan, Katherine, additional, Wooldridge, Paul J., additional, Köehler, Philipp, additional, Frankenberg, Christian, additional, and Cohen, Ronald C., additional

Published
2020
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225. Decomposing reflectance spectra to track gross primary production in a subalpine evergreen forest

Author

Cheng, Rui, primary, Magney, Troy S., additional, Dutta, Debsunder, additional, Bowling, David R., additional, Logan, Barry A., additional, Burns, Sean P., additional, Blanken, Peter D., additional, Grossmann, Katja, additional, Lopez, Sophia, additional, Richardson, Andrew D., additional, Stutz, Jochen, additional, and Frankenberg, Christian, additional

Published
2020
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226. Observed impacts of COVID-19 on urban CO2 emissions

Author

Turner, Alexander, primary, Kim, Jinsol, additional, Fitzmaurice, Helen, additional, Newman, Catherine, additional, Worthington, Kevin, additional, Chan, Katherine, additional, Wooldridge, Paul, additional, Köhler, Philipp, additional, Frankenberg, Christian, additional, and Cohen, Ronald C, additional

Published
2020
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232. Wide discrepancies in the magnitude and direction of modeled solar-induced chlorophyll fluorescence in response to light conditions

Author

Parazoo, Nicholas C., primary, Magney, Troy, additional, Norton, Alex, additional, Raczka, Brett, additional, Bacour, Cédric, additional, Maignan, Fabienne, additional, Baker, Ian, additional, Zhang, Yongguang, additional, Qiu, Bo, additional, Shi, Mingjie, additional, MacBean, Natasha, additional, Bowling, Dave R., additional, Burns, Sean P., additional, Blanken, Peter D., additional, Stutz, Jochen, additional, Grossmann, Katja, additional, and Frankenberg, Christian, additional

Published
2020
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233. The Global Methane Budget 2000–2017

Author

Saunois, Marielle, primary, Stavert, Ann R., additional, Poulter, Ben, additional, Bousquet, Philippe, additional, Canadell, Josep G., additional, Jackson, Robert B., additional, Raymond, Peter A., additional, Dlugokencky, Edward J., additional, Houweling, Sander, additional, Patra, Prabir K., additional, Ciais, Philippe, additional, Arora, Vivek K., additional, Bastviken, David, additional, Bergamaschi, Peter, additional, Blake, Donald R., additional, Brailsford, Gordon, additional, Bruhwiler, Lori, additional, Carlson, Kimberly M., additional, Carrol, Mark, additional, Castaldi, Simona, additional, Chandra, Naveen, additional, Crevoisier, Cyril, additional, Crill, Patrick M., additional, Covey, Kristofer, additional, Curry, Charles L., additional, Etiope, Giuseppe, additional, Frankenberg, Christian, additional, Gedney, Nicola, additional, Hegglin, Michaela I., additional, Höglund-Isaksson, Lena, additional, Hugelius, Gustaf, additional, Ishizawa, Misa, additional, Ito, Akihiko, additional, Janssens-Maenhout, Greet, additional, Jensen, Katherine M., additional, Joos, Fortunat, additional, Kleinen, Thomas, additional, Krummel, Paul B., additional, Langenfelds, Ray L., additional, Laruelle, Goulven G., additional, Liu, Licheng, additional, Machida, Toshinobu, additional, Maksyutov, Shamil, additional, McDonald, Kyle C., additional, McNorton, Joe, additional, Miller, Paul A., additional, Melton, Joe R., additional, Morino, Isamu, additional, Müller, Jurek, additional, Murguia-Flores, Fabiola, additional, Naik, Vaishali, additional, Niwa, Yosuke, additional, Noce, Sergio, additional, O'Doherty, Simon, additional, Parker, Robert J., additional, Peng, Changhui, additional, Peng, Shushi, additional, Peters, Glen P., additional, Prigent, Catherine, additional, Prinn, Ronald, additional, Ramonet, Michel, additional, Regnier, Pierre, additional, Riley, William J., additional, Rosentreter, Judith A., additional, Segers, Arjo, additional, Simpson, Isobel J., additional, Shi, Hao, additional, Smith, Steven J., additional, Steele, L. Paul, additional, Thornton, Brett F., additional, Tian, Hanqin, additional, Tohjima, Yasunori, additional, Tubiello, Francesco N., additional, Tsuruta, Aki, additional, Viovy, Nicolas, additional, Voulgarakis, Apostolos, additional, Weber, Thomas S., additional, van Weele, Michiel, additional, van der Werf, Guido R., additional, Weiss, Ray F., additional, Worthy, Doug, additional, Wunch, Debra, additional, Yin, Yi, additional, Yoshida, Yukio, additional, Zhang, Wenxin, additional, Zhang, Zhen, additional, Zhao, Yuanhong, additional, Zheng, Bo, additional, Zhu, Qing, additional, Zhu, Qiuan, additional, and Zhuang, Qianlai, additional

Published
2020
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234. Supplementary material to "Accelerating methane growth rate from 2010 to 2017: leading contributions from the tropics and East Asia"

Author

Yin, Yi, primary, Chevallier, Frederic, additional, Ciais, Philippe, additional, Bousquet, Philippe, additional, Saunois, Marielle, additional, Zheng, Bo, additional, Worden, John, additional, Bloom, A. Anthony, additional, Parker, Robert, additional, Jacob, Daniel, additional, Dlugokencky, Edward J., additional, and Frankenberg, Christian, additional

Published
2020
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235. Accelerating methane growth rate from 2010 to 2017: leading contributions from the tropics and East Asia

Author

Yin, Yi, primary, Chevallier, Frederic, additional, Ciais, Philippe, additional, Bousquet, Philippe, additional, Saunois, Marielle, additional, Zheng, Bo, additional, Worden, John, additional, Bloom, A. Anthony, additional, Parker, Robert, additional, Jacob, Daniel, additional, Dlugokencky, Edward J., additional, and Frankenberg, Christian, additional

Published
2020
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243. Cropland carbon uptake delayed by 2019 U.S. Midwest floods

Author

Yin, Yi, primary, Byrne, Branden, additional, Liu, Junjie, additional, Wennberg, Paul, additional, Köhler, Philipp, additional, Humphrey, Vincent, additional, Magney, Troy, additional, Davis, Kenneth, additional, Gerken, Tobias, additional, Feng, Sha, additional, Digangi, Joshua, additional, and Frankenberg, Christian, additional

Published
2020
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244. Cropland Carbon Uptake Delayed and Reduced by 2019 Midwest Floods

Author

Yin, Yi, primary, Byrne, Brendan, additional, Liu, Junjie, additional, Wennberg, Paul O., additional, Davis, Kenneth J., additional, Magney, Troy, additional, Köhler, Philipp, additional, He, Liyin, additional, Jeyaram, Rupesh, additional, Humphrey, Vincent, additional, Gerken, Tobias, additional, Feng, Sha, additional, Digangi, Joshua P., additional, and Frankenberg, Christian, additional

Published
2020
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245. Supplementary material to "Decomposing reflectance spectra to track gross primary production in a subalpine evergreen forest"

Author

Cheng, Rui, primary, Magney, Troy S., additional, Dutta, Debsunder, additional, Bowling, David R., additional, Logan, Barry A., additional, Burns, Sean P., additional, Blanken, Peter D., additional, Grossmann, Katja, additional, Lopez, Sophia, additional, Richardson, Andrew D., additional, Stutz, Jochen, additional, and Frankenberg, Christian, additional

Published
2020
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247. Supplementary material to "Wide Discrepancies in the Magnitude and Direction of Modelled SIF in Response to Light Conditions"

Author

Parazoo, Nicholas C., primary, Magney, Troy, additional, Norton, Alex, additional, Raczka, Brett, additional, Bacour, Cédric, additional, Maignan, Fabienne, additional, Baker, Ian, additional, Zhang, Yongguang, additional, Qiu, Bo, additional, Shi, Mingjie, additional, MacBean, Natasha, additional, Bowling, Dave R., additional, Burns, Sean P., additional, Blanken, Peter D., additional, Stutz, Jochen, additional, Grossman, Katja, additional, and Frankenberg, Christian, additional

Published
2020
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248. Wide Discrepancies in the Magnitude and Direction of Modelled SIF in Response to Light Conditions

Author

Parazoo, Nicholas C., primary, Magney, Troy, additional, Norton, Alex, additional, Raczka, Brett, additional, Bacour, Cédric, additional, Maignan, Fabienne, additional, Baker, Ian, additional, Zhang, Yongguang, additional, Qiu, Bo, additional, Shi, Mingjie, additional, MacBean, Natasha, additional, Bowling, Dave R., additional, Burns, Sean P., additional, Blanken, Peter D., additional, Stutz, Jochen, additional, Grossman, Katja, additional, and Frankenberg, Christian, additional

Published
2020
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249. Varying Contributions of Drivers to the Relationship Between Canopy Photosynthesis and Far‐Red Sun‐Induced Fluorescence for Two Maize Sites at Different Temporal Scales

Author

Miao, Guofang, primary, Guan, Kaiyu, additional, Suyker, Andrew E., additional, Yang, Xi, additional, Arkebauer, Timothy J., additional, Walter‐Shea, Elizabeth A., additional, Kimm, Hyungsuk, additional, Hmimina, Gabriel Y., additional, Gamon, John A., additional, Franz, Trenton E., additional, Frankenberg, Christian, additional, Berry, Joseph A., additional, and Wu, Genghong, additional

Published
2020
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