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1. Clean air policies are key for successfully mitigating Arctic warming

Author

von Salzen, Knut, Whaley, Cynthia H., Anenberg, Susan C., Van Dingenen, Rita, Klimont, Zbigniew, Flanner, Mark G., Mahmood, Rashed, Arnold, Stephen R., Beagley, Stephen, Chien, Rong-You, Christensen, Jesper H., Eckhardt, Sabine, Ekman, Annica M. L., Evangeliou, Nikolaos, Faluvegi, Greg, Fu, Joshua S., Gauss, Michael, Gong, Wanmin, Hjorth, Jens L., Im, Ulas, Krishnan, Srinath, Kupiainen, Kaarle, Kühn, Thomas, Langner, Joakim, Law, Kathy S., Marelle, Louis, Olivié, Dirk, Onishi, Tatsuo, Oshima, Naga, Paunu, Ville-Veikko, Peng, Yiran, Plummer, David, Pozzoli, Luca, Rao, Shilpa, Raut, Jean-Christophe, Sand, Maria, Schmale, Julia, Sigmond, Michael, Thomas, Manu A., Tsigaridis, Kostas, Tsyro, Svetlana, Turnock, Steven T., Wang, Minqi, and Winter, Barbara

Published
2022
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2. Air quality modeling intercomparison and multiscale ensemble chain for Latin America.

Author

Pachón, Jorge E., Opazo, Mariel A., Lichtig, Pablo, Huneeus, Nicolas, Bouarar, Idir, Brasseur, Guy, Li, Cathy W. Y., Flemming, Johannes, Menut, Laurent, Menares, Camilo, Gallardo, Laura, Gauss, Michael, Sofiev, Mikhail, Kouznetsov, Rostislav, Palamarchuk, Julia, Uppstu, Andreas, Dawidowski, Laura, Rojas, Nestor Y., Andrade, María de Fátima, and Gavidia-Calderón, Mario E.

Subjects
AIR quality monitoring, CITIES & towns, AIR analysis, EMISSION inventories, MEDIAN (Mathematics)
Abstract

A multiscale modeling ensemble chain has been assembled as a first step towards an air quality analysis and forecasting (AQF) system for Latin America. Two global and three regional models were tested and compared in retrospective mode over a shared domain (120–28° W, 60° S–30° N) for the months of January and July 2015. The objective of this experiment was to understand their performance and characterize their errors. Observations from local air quality monitoring networks in Colombia, Chile, Brazil, Mexico, Ecuador and Peru were used for model evaluation. The models generally agreed with observations in large cities such as Mexico City and São Paulo, whereas representing smaller urban areas, such as Bogotá and Santiago, was more challenging. For instance, in Santiago during wintertime, the simulations showed large discrepancies with observations. No single model demonstrated superior performance over others or among pollutants and sites available. In general, ozone and NO2 exhibited the lowest bias and errors, especially in São Paulo and Mexico City. For SO2, the bias and error were close to 200 %, except for Bogotá. The ensemble, created from the median value of all models, was evaluated as well. In some cases, the ensemble outperformed the individual models and mitigated extreme over- or underestimation. However, more research is needed before concluding that the ensemble is the path for an AQF system in Latin America. This study identified certain limitations in the models and global emission inventories, which should be addressed with the involvement and experience of local researchers. [ABSTRACT FROM AUTHOR]

Published
2024
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3. Air quality modeling intercomparison and multi-scale ensemble chain for Latin America

Author

Pachon, Jorge E., primary, Opazo, Mariel, additional, Lichtig, Pablo, additional, Hunneus, Nicolas, additional, Bouarar, Idir, additional, Brasseur, Guy, additional, Li, Cathy W. Y., additional, Flemming, Johannes, additional, Menut, Laurent, additional, Menares, Camilo, additional, Gallardo, Laura, additional, Gauss, Michael, additional, Sofiev, Mikhail, additional, Kouznetsov, Rostislav, additional, Palamarchuk, Julia, additional, Dawidowski, Laura, additional, Rojas, Nestor Y., additional, Andrade, Maria de Fatima, additional, Gavidia-Calderón, Mario E., additional, Delgado Peralta, Alejandro H., additional, and Schuch, Daniel, additional

Published
2024
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5. Evaluating modelled tropospheric columns of CH4, CO, and O3 in the Arctic using ground-based Fourier transform infrared (FTIR) measurements

Author

Flood, Victoria A., Strong, Kimberly, Whaley, Cynthia H., Walker, Kaley A., Blumenstock, Thomas, Hannigan, James W., Mellqvist, Johan, Notholt, Justus, Palm, Mathias, Roehling, Amelie N., Arnold, Stephen, Beagley, Stephen, Chien, Rong-You, Christensen, Jesper, Deushi, Makoto, Dobricic, Srdjan, Dong, Xinyi, Fu, Joshua S., Gauss, Michael, Gong, Wanmin, Langner, Joakim, Law, Kathy S., Marelle, Louis, Onishi, Tatsuo, Oshima, Naga, Plummer, David A., Pozzoli, Luca, Raut, Jean-Christophe, Thomas, Manu A., Tsyro, Svetlana, Turnock, Steven, Flood, Victoria A., Strong, Kimberly, Whaley, Cynthia H., Walker, Kaley A., Blumenstock, Thomas, Hannigan, James W., Mellqvist, Johan, Notholt, Justus, Palm, Mathias, Roehling, Amelie N., Arnold, Stephen, Beagley, Stephen, Chien, Rong-You, Christensen, Jesper, Deushi, Makoto, Dobricic, Srdjan, Dong, Xinyi, Fu, Joshua S., Gauss, Michael, Gong, Wanmin, Langner, Joakim, Law, Kathy S., Marelle, Louis, Onishi, Tatsuo, Oshima, Naga, Plummer, David A., Pozzoli, Luca, Raut, Jean-Christophe, Thomas, Manu A., Tsyro, Svetlana, and Turnock, Steven

Published
2024
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6. Crowd Research at School: Crossing Flows

Author

Bamberger, Johanna, Geßler, Anna-Lena, Heitzelmann, Peter, Korn, Sara, Kahlmeyer, Rene, Lu, Xue Hao, Sang, Qi Hao, Wang, Zhi Jie, Yuan, Guan Zong, Gauß, Michael, and Kretz, Tobias

Subjects
Physics - Physics and Society, Computer Science - Multiagent Systems
Abstract

It has become widely known that when two flows of pedestrians cross stripes emerge spontaneously by which the pedestrians of the two walking directions manage to pass each other in an orderly manner. In this work, we report about the results of an experiment on crossing flows which has been carried out at a German school. These results include that previously reported high flow volumes on the crossing area can be confirmed. The empirical results are furthermore compared to the results of a simulation model which succesfully could be calibrated to catch the specific properties of the population of participants., Comment: contribution to proceedings of Traffic and Granular Flow 2013 held in J\"ulich, Germany

Published
2014

7. Arctic Tropospheric Ozone Trends

Author

Law, Kathy S., primary, Hjorth, Jens L., additional, Pernov, Jakob B., additional, Whaley, Cynthia H., additional, Skov, Henrik, additional, Collaud Coen, Martine, additional, Langner, Joakim, additional, Arnold, Stephen R., additional, Tarasick, David, additional, Christensen, Jesper, additional, Deushi, Makoto, additional, Effertz, Peter, additional, Faluvegi, Greg, additional, Gauss, Michael, additional, Im, Ulas, additional, Oshima, Naga, additional, Petropavlovskikh, Irina, additional, Plummer, David, additional, Tsigaridis, Kostas, additional, Tsyro, Svetlana, additional, Solberg, Sverre, additional, and Turnock, Stephen, additional

Published
2023
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8. The consolidated European synthesis of CO2 emissions and removals for the European Union and United Kingdom: 1990–2020

Author

McGrath, Matthew J., primary, Petrescu, Ana Maria Roxana, additional, Peylin, Philippe, additional, Andrew, Robbie M., additional, Matthews, Bradley, additional, Dentener, Frank, additional, Balkovič, Juraj, additional, Bastrikov, Vladislav, additional, Becker, Meike, additional, Broquet, Gregoire, additional, Ciais, Philippe, additional, Fortems-Cheiney, Audrey, additional, Ganzenmüller, Raphael, additional, Grassi, Giacomo, additional, Harris, Ian, additional, Jones, Matthew, additional, Knauer, Jürgen, additional, Kuhnert, Matthias, additional, Monteil, Guillaume, additional, Munassar, Saqr, additional, Palmer, Paul I., additional, Peters, Glen P., additional, Qiu, Chunjing, additional, Schelhaas, Mart-Jan, additional, Tarasova, Oksana, additional, Vizzarri, Matteo, additional, Winkler, Karina, additional, Balsamo, Gianpaolo, additional, Berchet, Antoine, additional, Briggs, Peter, additional, Brockmann, Patrick, additional, Chevallier, Frédéric, additional, Conchedda, Giulia, additional, Crippa, Monica, additional, Dellaert, Stijn N. C., additional, Denier van der Gon, Hugo A. C., additional, Filipek, Sara, additional, Friedlingstein, Pierre, additional, Fuchs, Richard, additional, Gauss, Michael, additional, Gerbig, Christoph, additional, Guizzardi, Diego, additional, Günther, Dirk, additional, Houghton, Richard A., additional, Janssens-Maenhout, Greet, additional, Lauerwald, Ronny, additional, Lerink, Bas, additional, Luijkx, Ingrid T., additional, Moulas, Géraud, additional, Muntean, Marilena, additional, Nabuurs, Gert-Jan, additional, Paquirissamy, Aurélie, additional, Perugini, Lucia, additional, Peters, Wouter, additional, Pilli, Roberto, additional, Pongratz, Julia, additional, Regnier, Pierre, additional, Scholze, Marko, additional, Serengil, Yusuf, additional, Smith, Pete, additional, Solazzo, Efisio, additional, Thompson, Rona L., additional, Tubiello, Francesco N., additional, Vesala, Timo, additional, and Walther, Sophia, additional

Published
2023
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9. Predicting Air Pollution in East Asia

Author

Bouarar, Idir, Petersen, Katinka, Granier, Claire, Xie, Ying, Mijling, Bas, van der Ronald, A., Gauss, Michael, Pommier, Matthieu, Sofiev, Mikhail, Kouznetsov, Rostislav, Sudarchikova, Natalia, Wang, Lili, Zhou, Guangqiang, Brasseur, Guy P., International Space Science Institu, Editor, Bouarar, Idir, editor, Wang, Xuemei, editor, and Brasseur, Guy P., editor

Published
2017
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12. Intercontinental Impacts of Ozone Pollution on Human Mortality

Author

Anenberg, Susan Casper, West, J. Jason, Fiore, Arlene M, Jaffe, Daniel A, Prather, Michael J, Bergmann, Daniel, Cuvelier, Kees, Dentener, Frank J, Duncan, Bryan N, Gauss, Michael, Hess, Peter, Jonson, Jan Eiof, Lupu, Alexandru, MacKenzie, Ian A, Marmer, Elina, Park, Rokjin J, Sanderson, Michael G, Schultz, Martin, Shindell, Drew T, Szopa, Sophie, Vivanco, Marta Garcia, Wild, Oliver, and Zeng, Guang

Subjects
carbon monoxide emissions, chemical transport models, east asia, emission change, emission reduction, function parameters, health impact, human mortality, modeling studies, non-methane volatile organic compounds, ozone exposures, ozone pollution, ozone response, premature mortality, source region, source-receptor, south asia, surface ozone
Abstract

Ozone exposure is associated with negative health impacts, including premature mortality. Observations and modeling studies demonstrate that emissions from one continent influence ozone air quality over other continents. We estimate the premature mortalities avoided from surface ozone decreases obtained via combined 20% reductions of anthropogenic nitrogen oxide, nonmethane volatile organic compound, and carbon monoxide emissions in North America (NA), East Asia (EA), South Asia (SA), and Europe (EU). We use estimates of ozone responses to these emission changes from several atmospheric chemical transport models combined with a health impact function. Foreign emission reductions contribute approximately 30%, 30%, 20%, and >50% of the mortalities avoided by reducing precursor emissions in all regions together in NA, EA, SA, and EU, respectively. Reducing emissions in NA and EU avoids more mortalities outside the source region than within, owing in part to larger populations in foreign regions. Lowering the global methane abundance by 20% reduces mortality most in SA, followed by EU, EA, and NA. For some source−receptor pairs, there is greater uncertainty in our estimated avoided mortalities associated with the modeled ozone responses to emission changes than with the health impact function parameters.

Published
2009

13. Evaluating modelled tropospheric columns of CH4, CO and O3 in the Arctic using ground-based FTIR measurements

Author

Flood, Victoria A., primary, Strong, Kimberly, additional, Whaley, Cynthia H., additional, Walker, Kaley A., additional, Blumenstock, Thomas, additional, Hannigan, James W., additional, Mellqvist, Johan, additional, Notholt, Justus, additional, Palm, Mathias, additional, Röhling, Amelie N., additional, Arnold, Stephen, additional, Beagley, Stephen, additional, Chien, Rong-You, additional, Christensen, Jesper, additional, Deushi, Makoto, additional, Dobricic, Srdjan, additional, Dong, Xinyi, additional, Fu, Joshua S., additional, Gauss, Michael, additional, Gong, Wanmin, additional, Langner, Joakim, additional, Law, Kathy S., additional, Marelle, Louis, additional, Onishi, Tatsuo, additional, Oshima, Naga, additional, Plummer, David A., additional, Pozzoli, Luca, additional, Raut, Jean-Christophe, additional, Thomas, Manu A., additional, Tsyro, Svetlana, additional, and Turnock, Steven, additional

Published
2023
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16. Evaluating modelled tropospheric columns of CH4, CO and O3 in the Arctic using ground-based FTIR measurements

Author

Flood, Victoria A., Strong, Kimberly, Whaley, Cynthia H., Walker, Kaley A., Blumenstock, Thomas, Hannigan, James W., Mellqvist, Johan, Notholt, Justus, Palm, Mathias, Röhling, Amelie N., Arnold, Stephen, Beagley, Stephen, Chien, Rong-You, Christensen, Jesper, Deushi, Makoto, Dobricic, Srdjan, Dong, Xinyi, Fu, Joshua S., Gauss, Michael, Gong, Wanmin, Langner, Joakim, Law, Kathy S., Marelle, Louis, Onishi, Tatsuo, Oshima, Naga, Plummer, David A., Pozzoli, Luca, Raut, Jean-Christophe, Thomas, Manu A., Tsyro, Svetlana, and Turnock, Steven

Abstract

Both measurements and modelling of air pollution in the Arctic are difficult. Yet with the Arctic warming at nearly four times the global average rate, and changing emissions in and near the region, it is important to understand Arctic atmospheric composition and how it is changing. This study examines the simulations of atmospheric concentrations of methane, carbon monoxide and ozone in the Arctic by 11 models. Evaluations are performed using data from five high-latitude ground-based Fourier transform infrared (FTIR) spectrometers in the Network for the Detection of Atmospheric Composition Change (NDACC). Mixing ratios of trace gases are modelled at three-hourly intervals by CESM, CMAM, DEHM, EMEP MSC-W, GEM-MACH, GEOS-Chem, MATCH, MATCH-SALSA, MRI-ESM2, UKESM1 and WRF-Chem for the years 2008, 2009, 2014, and 2015. The comparisons focus on the troposphere (0–7 km partial columns) at Eureka, Canada; Thule, Greenland; Ny Ålesund, Norway; Kiruna, Sweden; and Harestua, Norway. Overall, the models are biased low in the tropospheric column, on average by -9.6 % for CH4, -21 % for CO and -18 % for O3. Results for CH4 are relatively consistent across the four years, whereas CO has a maximum negative bias in the spring and minimum in the summer, and O3 has a maximum difference centred around the summer. The average differences for the models are within the FTIR uncertainties for approximately 15 % of the model-location comparisons.

Published
2023

17. Crowd Research at School: Crossing Flows

Author

Bamberger, Johanna, Geßler, Anna-Lena, Heitzelmann, Peter, Korn, Sara, Kahlmeyer, Rene, Lu, Xue Hao, Sang, Qi Hao, Wang, Zhi Jie, Yuan, Guan Zong, Gauß, Michael, Kretz, Tobias, Chraibi, Mohcine, editor, Boltes, Maik, editor, Schadschneider, Andreas, editor, and Seyfried, Armin, editor

Published
2015
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18. Arctic Tropospheric Ozone Trends

Author

Law, Kathy S., Hjorth, Jens L., Pernov, Jakob B., Whaley, Cynthia H., Skov, Henrik, Collaud Coen, Martine, Langner, Joakim, Arnold, Stephen R., Tarasick, David, Christensen, Jesper, Deushi, Makoto, Effertz, Peter, Faluvegi, Greg, Gauss, Michael, Im, Ulas, Oshima, Naga, Petropavlovskikh, Irina, Plummer, David, Tsigaridis, Kostas, Tsyro, Svetlana, Solberg, Sverre, Turnock, Stephen, Law, Kathy S., Hjorth, Jens L., Pernov, Jakob B., Whaley, Cynthia H., Skov, Henrik, Collaud Coen, Martine, Langner, Joakim, Arnold, Stephen R., Tarasick, David, Christensen, Jesper, Deushi, Makoto, Effertz, Peter, Faluvegi, Greg, Gauss, Michael, Im, Ulas, Oshima, Naga, Petropavlovskikh, Irina, Plummer, David, Tsigaridis, Kostas, Tsyro, Svetlana, Solberg, Sverre, and Turnock, Stephen

Published
2023
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19. Arctic tropospheric ozone : assessment of current knowledge and modelperformance

Author

Whaley, Cynthia H., Law, Kathy S., Hjorth, Jens Liengaard, Skov, Henrik, Arnold, Stephen R., Langner, Joakim, Pernov, Jakob Boyd, Bergeron, Garance, Bourgeois, Ilann, Christensen, Jesper H., Chien, Rong-You, Deushi, Makoto, Dong, Xinyi, Effertz, Peter, Faluvegi, Gregory, Flanner, Mark, Fu, Joshua S., Gauss, Michael, Huey, Greg, Im, Ulas, Kivi, Rigel, Marelle, Louis, Onishi, Tatsuo, Oshima, Naga, Petropavlovskikh, Irina, Peischl, Jeff, Plummer, David A., Pozzoli, Luca, Raut, Jean-Christophe, Ryerson, Tom, Skeie, Ragnhild, Solberg, Sverre, Thomas, Manu, Thompson, Chelsea, Tsigaridis, Kostas, Tsyro, Svetlana, Turnock, Steven T., von Salzen, Knut, Tarasick, David W., Whaley, Cynthia H., Law, Kathy S., Hjorth, Jens Liengaard, Skov, Henrik, Arnold, Stephen R., Langner, Joakim, Pernov, Jakob Boyd, Bergeron, Garance, Bourgeois, Ilann, Christensen, Jesper H., Chien, Rong-You, Deushi, Makoto, Dong, Xinyi, Effertz, Peter, Faluvegi, Gregory, Flanner, Mark, Fu, Joshua S., Gauss, Michael, Huey, Greg, Im, Ulas, Kivi, Rigel, Marelle, Louis, Onishi, Tatsuo, Oshima, Naga, Petropavlovskikh, Irina, Peischl, Jeff, Plummer, David A., Pozzoli, Luca, Raut, Jean-Christophe, Ryerson, Tom, Skeie, Ragnhild, Solberg, Sverre, Thomas, Manu, Thompson, Chelsea, Tsigaridis, Kostas, Tsyro, Svetlana, Turnock, Steven T., von Salzen, Knut, and Tarasick, David W.

Published
2023
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20. The consolidated European synthesis of CO2 emissions and removals for the European Union and United Kingdom: 1990-2020

Author

McGrath, Matthew J., Petrescu, Ana Maria Roxana, Peylin, Philippe, Andrew, Robbie M., Matthews, Bradley, Dentener, Frank, Balkovič, Juraj, Bastrikov, Vladislav, Becker, Meike, Broquet, Gregoire, Ciais, Philippe, Fortems-Cheiney, Audrey, Ganzenmüller, Raphael, Grassi, Giacomo, Harris, Ian, Jones, Matthew, Knauer, Jürgen, Kuhnert, Matthias, Monteil, Guillaume, Munassar, Saqr, Palmer, Paul I., Peters, Glen P., Qiu, Chunjing, Schelhaas, Mart Jan, Tarasova, Oksana, Vizzarri, Matteo, Winkler, Karina, Balsamo, Gianpaolo, Berchet, Antoine, Briggs, Peter, Brockmann, Patrick, Chevallier, Frédéric, Conchedda, Giulia, Crippa, Monica, Dellaert, Stijn N.C., Denier van der Gon, Hugo A.C., Filipek, Sara, Friedlingstein, Pierre, Fuchs, Richard, Gauss, Michael, Gerbig, Christoph, Guizzardi, Diego, Günther, Dirk, Houghton, Richard A., Janssens-Maenhout, Greet, Lauerwald, Ronny, Lerink, Bas, Luijkx, Ingrid T., Moulas, Géraud, Muntean, Marilena, Nabuurs, Gert Jan, Paquirissamy, Aurélie, Perugini, Lucia, Peters, Wouter, Pilli, Roberto, Pongratz, Julia, Regnier, Pierre, Scholze, Marko, Serengil, Yusuf, Smith, Pete, Solazzo, Efisio, Thompson, Rona L., Tubiello, Francesco N., Vesala, Timo, Walther, Sophia, McGrath, Matthew J., Petrescu, Ana Maria Roxana, Peylin, Philippe, Andrew, Robbie M., Matthews, Bradley, Dentener, Frank, Balkovič, Juraj, Bastrikov, Vladislav, Becker, Meike, Broquet, Gregoire, Ciais, Philippe, Fortems-Cheiney, Audrey, Ganzenmüller, Raphael, Grassi, Giacomo, Harris, Ian, Jones, Matthew, Knauer, Jürgen, Kuhnert, Matthias, Monteil, Guillaume, Munassar, Saqr, Palmer, Paul I., Peters, Glen P., Qiu, Chunjing, Schelhaas, Mart Jan, Tarasova, Oksana, Vizzarri, Matteo, Winkler, Karina, Balsamo, Gianpaolo, Berchet, Antoine, Briggs, Peter, Brockmann, Patrick, Chevallier, Frédéric, Conchedda, Giulia, Crippa, Monica, Dellaert, Stijn N.C., Denier van der Gon, Hugo A.C., Filipek, Sara, Friedlingstein, Pierre, Fuchs, Richard, Gauss, Michael, Gerbig, Christoph, Guizzardi, Diego, Günther, Dirk, Houghton, Richard A., Janssens-Maenhout, Greet, Lauerwald, Ronny, Lerink, Bas, Luijkx, Ingrid T., Moulas, Géraud, Muntean, Marilena, Nabuurs, Gert Jan, Paquirissamy, Aurélie, Perugini, Lucia, Peters, Wouter, Pilli, Roberto, Pongratz, Julia, Regnier, Pierre, Scholze, Marko, Serengil, Yusuf, Smith, Pete, Solazzo, Efisio, Thompson, Rona L., Tubiello, Francesco N., Vesala, Timo, and Walther, Sophia

Abstract

Quantification of land surface-atmosphere fluxes of carbon dioxide (CO2) and their trends and uncertainties is essential for monitoring progress of the EU27+UK bloc as it strives to meet ambitious targets determined by both international agreements and internal regulation. This study provides a consolidated synthesis of fossil sources (CO2 fossil) and natural (including formally managed ecosystems) sources and sinks over land (CO2 land) using bottom-up (BU) and top-down (TD) approaches for the European Union and United Kingdom (EU27+UK), updating earlier syntheses (Petrescu et al., 2020, 2021). Given the wide scope of the work and the variety of approaches involved, this study aims to answer essential questions identified in the previous syntheses and understand the differences between datasets, particularly for poorly characterized fluxes from managed and unmanaged ecosystems. The work integrates updated emission inventory data, process-based model results, data-driven categorical model results, and inverse modeling estimates, extending the previous period 1990-2018 to the year 2020 to the extent possible. BU and TD products are compared with the European national greenhouse gas inventory (NGHGI) reported by parties including the year 2019 under the United Nations Framework Convention on Climate Change (UNFCCC). The uncertainties of the EU27+UK NGHGI were evaluated using the standard deviation reported by the EU member states following the guidelines of the Intergovernmental Panel on Climate Change (IPCC) and harmonized by gap-filling procedures. Variation in estimates produced with other methods, such as atmospheric inversion models (TD) or spatially disaggregated inventory datasets (BU), originate from within-model uncertainty related to parameterization as well as structural differences between models. By comparing the NGHGI with other approaches, key sources of differences between estimates arise primarily in activities. System boundaries and emission categorie

Published
2023

23. Global and regional anthropogenic emissions inventories for air quality atlases

Author

Soulie, Antonin, primary, doumbia, Thierno, additional, Keita, Sekou, additional, Granier, Claire, additional, Denier Vand der Gon, Hugo, additional, Kuenen, Jeroen, additional, Arellano, Santiago, additional, Darras, Sabine, additional, Gauss, Michael, additional, Guevara, Marc, additional, Jalkanen, Jukka-Pekka, additional, Liousse, Cathy, additional, Simpson, David, additional, and Sindelarova, Katerina, additional

Published
2023
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24. Arctic Tropospheric Ozone Trends

Author

Law, Kathy S, primary, Hjorth, Jens Liengaard, additional, Pernov, Jakob Boyd, additional, Whaley, Cynthia, additional, Skov, Henrik, additional, Coen, Martine Collaud, additional, Langner, Joakim, additional, Arnold, Steve Robert, additional, Tarasick, David W, additional, Christensen, Jesper, additional, Deushi, Makoto, additional, Effertz, Peter, additional, Faluvegi, Greg, additional, Gauss, Michael, additional, Im, Ulas, additional, Oshima, Naga, additional, Petropavlovskikh, Irina, additional, Plummer, David, additional, Tsigaridis, Kostas, additional, Tsyro, Svetlana, additional, Solberg, Sverre, additional, and Turnock, Steven T, additional

Published
2023
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25. The consolidated European synthesis of CO2 emissions and removals for EU27 and UK: 1990–2020

Author

McGrath, Matthew Joseph, primary, Petrescu, Ana Maria Roxana, additional, Peylin, Philippe, additional, Andrew, Robbie M., additional, Matthews, Bradley, additional, Dentener, Frank, additional, Balkovič, Juraj, additional, Bastrikov, Vladislav, additional, Becker, Meike, additional, Broquet, Gregoire, additional, Ciais, Philippe, additional, Fortems, Audrey, additional, Ganzenmüller, Raphael, additional, Grassi, Giacomo, additional, Harris, Ian, additional, Jones, Matthew, additional, Knauer, Juergen, additional, Kuhnert, Matthias, additional, Monteil, Guillaume, additional, Munassar, Saqr, additional, Palmer, Paul I., additional, Peters, Glen P., additional, Qiu, Chunjing, additional, Schelhaas, Mart-Jan, additional, Tarasova, Oksana, additional, Vizzarri, Matteo, additional, Winkler, Karina, additional, Balsamo, Gianpaolo, additional, Berchet, Antoine, additional, Briggs, Peter, additional, Brockmann, Patrick, additional, Chevallier, Frédéric, additional, Conchedda, Giulia, additional, Crippa, Monica, additional, Dellaert, Stijn, additional, Denier van der Gon, Hugo A. C., additional, Filipek, Sara, additional, Friedlingstein, Pierre, additional, Fuchs, Richard, additional, Gauss, Michael, additional, Gerbig, Christoph, additional, Guizzardi, Diego, additional, Günther, Dirk, additional, Houghton, Richard A., additional, Janssens-Maenhout, Greet, additional, Lauerwald, Ronny, additional, Lerink, Bas, additional, Luijkx, Ingrid T., additional, Moulas, Géraud, additional, Muntean, Marilena, additional, Nabuurs, Gert-Jan, additional, Paquirissamy, Aurélie, additional, Perugini, Lucia, additional, Peters, Wouter, additional, Pilli, Roberto, additional, Pongratz, Julia, additional, Regnier, Pierre, additional, Scholze, Marko, additional, Serengil, Yusuf, additional, Smith, Pete, additional, Solazzo, Efisio, additional, Thompson, Rona L., additional, Tubiello, Francesco N., additional, Vesala, Timo, additional, and Walther, Sophia, additional

Published
2023
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26. Supplementary material to "The consolidated European synthesis of CO2 emissions and removals for EU27 and UK: 1990–2020"

Author

McGrath, Matthew Joseph, primary, Petrescu, Ana Maria Roxana, additional, Peylin, Philippe, additional, Andrew, Robbie M., additional, Matthews, Bradley, additional, Dentener, Frank, additional, Balkovič, Juraj, additional, Bastrikov, Vladislav, additional, Becker, Meike, additional, Broquet, Gregoire, additional, Ciais, Philippe, additional, Fortems, Audrey, additional, Ganzenmüller, Raphael, additional, Grassi, Giacomo, additional, Harris, Ian, additional, Jones, Matthew, additional, Knauer, Juergen, additional, Kuhnert, Matthias, additional, Monteil, Guillaume, additional, Munassar, Saqr, additional, Palmer, Paul I., additional, Peters, Glen P., additional, Qiu, Chunjing, additional, Schelhaas, Mart-Jan, additional, Tarasova, Oksana, additional, Vizzarri, Matteo, additional, Winkler, Karina, additional, Balsamo, Gianpaolo, additional, Berchet, Antoine, additional, Briggs, Peter, additional, Brockmann, Patrick, additional, Chevallier, Frédéric, additional, Conchedda, Giulia, additional, Crippa, Monica, additional, Dellaert, Stijn, additional, Denier van der Gon, Hugo A. C., additional, Filipek, Sara, additional, Friedlingstein, Pierre, additional, Fuchs, Richard, additional, Gauss, Michael, additional, Gerbig, Christoph, additional, Guizzardi, Diego, additional, Günther, Dirk, additional, Houghton, Richard A., additional, Janssens-Maenhout, Greet, additional, Lauerwald, Ronny, additional, Lerink, Bas, additional, Luijkx, Ingrid T., additional, Moulas, Géraud, additional, Muntean, Marilena, additional, Nabuurs, Gert-Jan, additional, Paquirissamy, Aurélie, additional, Perugini, Lucia, additional, Peters, Wouter, additional, Pilli, Roberto, additional, Pongratz, Julia, additional, Regnier, Pierre, additional, Scholze, Marko, additional, Serengil, Yusuf, additional, Smith, Pete, additional, Solazzo, Efisio, additional, Thompson, Rona L., additional, Tubiello, Francesco N., additional, Vesala, Timo, additional, and Walther, Sophia, additional

Published
2023
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27. Arctic tropospheric ozone: assessment of current knowledge and model performance

Author

Whaley, Cynthia H., primary, Law, Kathy S., additional, Hjorth, Jens Liengaard, additional, Skov, Henrik, additional, Arnold, Stephen R., additional, Langner, Joakim, additional, Pernov, Jakob Boyd, additional, Bergeron, Garance, additional, Bourgeois, Ilann, additional, Christensen, Jesper H., additional, Chien, Rong-You, additional, Deushi, Makoto, additional, Dong, Xinyi, additional, Effertz, Peter, additional, Faluvegi, Gregory, additional, Flanner, Mark, additional, Fu, Joshua S., additional, Gauss, Michael, additional, Huey, Greg, additional, Im, Ulas, additional, Kivi, Rigel, additional, Marelle, Louis, additional, Onishi, Tatsuo, additional, Oshima, Naga, additional, Petropavlovskikh, Irina, additional, Peischl, Jeff, additional, Plummer, David A., additional, Pozzoli, Luca, additional, Raut, Jean-Christophe, additional, Ryerson, Tom, additional, Skeie, Ragnhild, additional, Solberg, Sverre, additional, Thomas, Manu A., additional, Thompson, Chelsea, additional, Tsigaridis, Kostas, additional, Tsyro, Svetlana, additional, Turnock, Steven T., additional, von Salzen, Knut, additional, and Tarasick, David W., additional

Published
2023
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29. Analysis of meteorology–chemistry interactions during air pollution episodes using online coupled models within AQMEII phase-2

Author

Kong, Xin, Forkel, Renate, Sokhi, Ranjeet S., Suppan, Peter, Baklanov, Alexander, Gauss, Michael, Brunner, Dominik, Barò, Rocìo, Balzarini, Alessandra, Chemel, Charles, Curci, Gabriele, Jiménez-Guerrero, Pedro, Hirtl, Marcus, Honzak, Luka, Im, Ulas, Pérez, Juan L., Pirovano, Guido, San Jose, Roberto, Schlünzen, K. Heinke, Tsegas, George, Tuccella, Paolo, Werhahn, Johannes, Žabkar, Rahela, and Galmarini, Stefano

Published
2015
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30. The consolidated European synthesis of CO2 emissions and removals for EU27 and UK: 1990–2020

Author

McGrath, Matthew Joseph, Petrescu, Ana-Maria-Roxana, Peylin, Philippe, Andrew, Robbie M., Matthews, Bradley, Dentener, Frank J., Balkovič, Juraj, Bastrikov, Vladislav, Becker, Meike, Broquet, Gregoire, Ciais, Philippe, Fortems-Cheiney, Audrey, Ganzenmüller, Raphael, Grassi, Giacomo, Harris, Ian, Jones, Matthew W., Knauer, Jürgen, Kuhnert, Matthias, Monteil, Guillaume, Munassar, Saqr, Palmer, Paul I., Peters, Glen P., Qiu, Chunjing, Schelhaas, Mart Jan, Tarasova, Oksana A., Vizzarri, Matteo, Winkler, Karina, Balsamo, Gianpaolo, Berchet, Antoine, Briggs, Peter, Brockmann, Patrick, Chevallier, Frederic, Conchedda, Giulia, Crippa, Monica, Dellaert, Stijn, A. C. Denier Van Der Gon, Hugo, Filipek, Sara, Friedlingstein, Pierre, Fuchs, Richard, Gauss, Michael, Gerbig, Christoph, Guizzardi, Diego, Günther, Dirk, Houghton, Richard A., Janssens-Maenhout, Greet, Lauerwald, Ronny, Lerink, Bas, Van Der Laan-Luijkx, Ingrid T., Moulas, Geraud, Muntean, Marilena, Nabuurs, Gert Jan, Paquirissamy, Aurélie, Perugini, Lucia, Peters, Wouter, Pilli, Roberto, Pongratz, Julia, Regnier, Pierre, Scholze, Marko, Serengil, Yusuf, Smith, Pete, Solazzo, Efisio, Thompson, Rona L., N. Tubiello, Francesco, Vesala, Timo, and Walther, Sophia

Published
2023

31. Evaluating modelled tropospheric columns of CH4, CO and O3 in the Arctic using ground-based FTIR measurements.

Author

Flood, Victoria A., Strong, Kimberly, Whaley, Cynthia H., Walker, Kaley A., Blumenstock, Thomas, Hannigan, James W., Mellqvist, Johan, Notholt, Justus, Palm, Mathias, Röhling, Amelie N., Arnold, Stephen, Beagley, Stephen, Chien, Rong-You, Christensen, Jesper, Deushi, Makoto, Dobricic, Srdjan, Dong, Xinyi, Fu, Joshua S., Gauss, Michael, and Gong, Wanmin

Subjects
AIR pollution measurement, ATMOSPHERIC composition, ATMOSPHERIC methane, TRACE gases, SPRING, CARBON monoxide, TROPOSPHERIC aerosols
Abstract

Both measurements and modelling of air pollution in the Arctic are difficult. Yet with the Arctic warming at nearly four times the global average rate, and changing emissions in and near the region, it is important to understand Arctic atmospheric composition and how it is changing. This study examines the simulations of atmospheric concentrations of methane, carbon monoxide and ozone in the Arctic by 11 models. Evaluations are performed using data from five high-latitude ground-based Fourier transform infrared (FTIR) spectrometers in the Network for the Detection of Atmospheric Composition Change (NDACC). Mixing ratios of trace gases are modelled at three-hourly intervals by CESM, CMAM, DEHM, EMEP MSC-W, GEM-MACH, GEOS-Chem, MATCH, MATCH-SALSA, MRI-ESM2, UKESM1 and WRF-Chem for the years 2008, 2009, 2014, and 2015. The comparisons focus on the troposphere (0–7 km partial columns) at Eureka, Canada; Thule, Greenland; Ny Ålesund, Norway; Kiruna, Sweden; and Harestua, Norway. Overall, the models are biased low in the tropospheric column, on average by -9.6 % for CH4, -21 % for CO and -18 % for O3. Results for CH4 are relatively consistent across the four years, whereas CO has a maximum negative bias in the spring and minimum in the summer, and O3 has a maximum difference centred around the summer. The average differences for the models are within the FTIR uncertainties for approximately 15 % of the model-location comparisons. [ABSTRACT FROM AUTHOR]

Published
2023
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33. Model evaluation of short-lived climate forcers for the Arctic Monitoring and Assessment Programme : a multi-species, multi-model study

Author

Whaley, Cynthia H., Mahmood, Rashed, von Salzen, Knut, Winter, Barbara, Eckhardt, Sabine, Arnold, Stephen, Beagley, Stephen, Becagli, Silvia, Chien, Rong-You, Christensen, Jesper, Damani, Sujay Manish, Dong, Xinyi, Eleftheriadis, Konstantinos, Evangeliou, Nikolaos, Faluvegi, Gregory, Flanner, Mark, Fu, Joshua S., Gauss, Michael, Giardi, Fabio, Gong, Wanmin, Hjorth, Jens Liengaard, Huang, Lin, Im, Ulas, Kanaya, Yugo, Krishnan, Srinath, Klimont, Zbigniew, Kuhn, Thomas, Langner, Joakim, Law, Kathy S., Marelle, Louis, Massling, Andreas, Olivie, Dirk, Onishi, Tatsuo, Oshima, Naga, Peng, Yiran, Plummer, David A., Popovicheva, Olga, Pozzoli, Luca, Raut, Jean-Christophe, Sand, Maria, Saunders, Laura N., Schmale, Julia, Sharma, Sangeeta, Skeie, Ragnhild Bieltvedt, Skov, Henrik, Taketani, Fumikazu, Thomas, Manu A., Traversi, Rita, Tsigaridis, Kostas, Tsyro, Svetlana, Turnock, Steven, Vitale, Vito, Walker, Kaley A., Wang, Minqi, Watson-Parris, Duncan, Weiss-Gibbons, Tahya, Whaley, Cynthia H., Mahmood, Rashed, von Salzen, Knut, Winter, Barbara, Eckhardt, Sabine, Arnold, Stephen, Beagley, Stephen, Becagli, Silvia, Chien, Rong-You, Christensen, Jesper, Damani, Sujay Manish, Dong, Xinyi, Eleftheriadis, Konstantinos, Evangeliou, Nikolaos, Faluvegi, Gregory, Flanner, Mark, Fu, Joshua S., Gauss, Michael, Giardi, Fabio, Gong, Wanmin, Hjorth, Jens Liengaard, Huang, Lin, Im, Ulas, Kanaya, Yugo, Krishnan, Srinath, Klimont, Zbigniew, Kuhn, Thomas, Langner, Joakim, Law, Kathy S., Marelle, Louis, Massling, Andreas, Olivie, Dirk, Onishi, Tatsuo, Oshima, Naga, Peng, Yiran, Plummer, David A., Popovicheva, Olga, Pozzoli, Luca, Raut, Jean-Christophe, Sand, Maria, Saunders, Laura N., Schmale, Julia, Sharma, Sangeeta, Skeie, Ragnhild Bieltvedt, Skov, Henrik, Taketani, Fumikazu, Thomas, Manu A., Traversi, Rita, Tsigaridis, Kostas, Tsyro, Svetlana, Turnock, Steven, Vitale, Vito, Walker, Kaley A., Wang, Minqi, Watson-Parris, Duncan, and Weiss-Gibbons, Tahya

Published
2022
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34. Data for the consolidated European synthesis of CO2 emissions and removals for EU27 and UK: 1990-2020

Author

McGrath, Matthew Joseph, Petrescu, Ana Maria Roxana, Peylin, Philippe, Andrew, Robbie M., Matthews, Bradley, Dentener, Frank, Balkovič, Juraj, Bastrikov, Vladislav, Becker, Meike, Broquet, Gregoire, Ciais, Philippe, Fortems, Audrey, Ganzenmüller, Raphael, Grassi, Giacomo, Harris, Ian, Jones, Matthew, Knauer, Juergen, Kuhnert, Matthias, Monteil, Guillaume, Munassar, Saqr, Palmer, Paul I., Peters, Glen P., Qiu, Chunjing, Schelhaas, Mart-Jan, Tarasova, Oksana, Vizzarri, Matteo, Winkler, Karina, Balsamo, Gianpaolo, Berchet, Antoine, Briggs, Peter, Brockmann, Patrick, Chevallier, Frédéric, Conchedda, Giulia, Crippa, Monica, Dellaert, Stijn, Denier van der Gon, Hugo A.C., Filipek, Sara, Friedlingstein, Pierre, Fuchs, Richard, Gauss, Michael, Gerbig, Christoph, Guizzardi, Diego, Günther, Dirk, Houghton, Richard A., Janssens-Maenhout, Greet, Lauerwald, Ronny, Lerink, Bas, Luijkx, Ingrid T., Moulas, Géraud, Muntean, Marilena, Nabuurs, Gert-Jan, Paquirissamy, Aurélie, Perugini, Lucia, Peters, Wouter, Pilli, Roberto, Pongratz, Julia, Regnier, Pierre, Scholze, Marko, Serengil, Yusuf, Smith, Pete, Solazzo, Efisio, Thompson, Rona L., Tubiello, Francesco N., Vesala, Timo, Walther, Sophia, McGrath, Matthew Joseph, Petrescu, Ana Maria Roxana, Peylin, Philippe, Andrew, Robbie M., Matthews, Bradley, Dentener, Frank, Balkovič, Juraj, Bastrikov, Vladislav, Becker, Meike, Broquet, Gregoire, Ciais, Philippe, Fortems, Audrey, Ganzenmüller, Raphael, Grassi, Giacomo, Harris, Ian, Jones, Matthew, Knauer, Juergen, Kuhnert, Matthias, Monteil, Guillaume, Munassar, Saqr, Palmer, Paul I., Peters, Glen P., Qiu, Chunjing, Schelhaas, Mart-Jan, Tarasova, Oksana, Vizzarri, Matteo, Winkler, Karina, Balsamo, Gianpaolo, Berchet, Antoine, Briggs, Peter, Brockmann, Patrick, Chevallier, Frédéric, Conchedda, Giulia, Crippa, Monica, Dellaert, Stijn, Denier van der Gon, Hugo A.C., Filipek, Sara, Friedlingstein, Pierre, Fuchs, Richard, Gauss, Michael, Gerbig, Christoph, Guizzardi, Diego, Günther, Dirk, Houghton, Richard A., Janssens-Maenhout, Greet, Lauerwald, Ronny, Lerink, Bas, Luijkx, Ingrid T., Moulas, Géraud, Muntean, Marilena, Nabuurs, Gert-Jan, Paquirissamy, Aurélie, Perugini, Lucia, Peters, Wouter, Pilli, Roberto, Pongratz, Julia, Regnier, Pierre, Scholze, Marko, Serengil, Yusuf, Smith, Pete, Solazzo, Efisio, Thompson, Rona L., Tubiello, Francesco N., Vesala, Timo, and Walther, Sophia

Abstract

The annual carbon dioxide fluxes used to create all graphs in the main text of McGrath et al, "European synthesis of CO2 emissions and removals for EU27 and UK: 1990-2020", submitted to Earth System Science Data.

Published
2022

37. Arctic tropospheric ozone: assessment of current knowledge and model performance

Author

Whaley, Cynthia H., primary, Law, Kathy S., additional, Hjorth, Jens Liengaard, additional, Skov, Henrik, additional, Arnold, Stephen R., additional, Langner, Joakim, additional, Pernov, Jakob Boyd, additional, Chien, Rong-You, additional, Christensen, Jesper H., additional, Deushi, Makoto, additional, Dong, Xinyi, additional, Faluvegi, Gregory, additional, Flanner, Mark, additional, Fu, Joshua S., additional, Gauss, Michael, additional, Im, Ulas, additional, Marelle, Louis, additional, Onishi, Tatsuo, additional, Oshima, Naga, additional, Plummer, David A., additional, Pozzoli, Luca, additional, Raut, Jean-Christophe, additional, Skeie, Ragnhild, additional, Thomas, Manu A., additional, Tsigaridis, Kostas, additional, Tsyro, Svetlana, additional, Turnock, Steven T., additional, von Salzen, Knut, additional, and Tarasick, David W., additional

Published
2022
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38. Supplementary material to "Arctic tropospheric ozone: assessment of current knowledge and model performance"

Author

Whaley, Cynthia H., primary, Law, Kathy S., additional, Hjorth, Jens Liengaard, additional, Skov, Henrik, additional, Arnold, Stephen R., additional, Langner, Joakim, additional, Pernov, Jakob Boyd, additional, Chien, Rong-You, additional, Christensen, Jesper H., additional, Deushi, Makoto, additional, Dong, Xinyi, additional, Faluvegi, Gregory, additional, Flanner, Mark, additional, Fu, Joshua S., additional, Gauss, Michael, additional, Im, Ulas, additional, Marelle, Louis, additional, Onishi, Tatsuo, additional, Oshima, Naga, additional, Plummer, David A., additional, Pozzoli, Luca, additional, Raut, Jean-Christophe, additional, Skeie, Ragnhild, additional, Thomas, Manu A., additional, Tsigaridis, Kostas, additional, Tsyro, Svetlana, additional, Turnock, Steven T., additional, von Salzen, Knut, additional, and Tarasick, David W., additional

Published
2022
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39. Model evaluation of short-lived climate forcers for the Arctic Monitoring and Assessment Programme: a multi-species, multi-model study

Author

Whaley, Cynthia H., primary, Mahmood, Rashed, additional, von Salzen, Knut, additional, Winter, Barbara, additional, Eckhardt, Sabine, additional, Arnold, Stephen, additional, Beagley, Stephen, additional, Becagli, Silvia, additional, Chien, Rong-You, additional, Christensen, Jesper, additional, Damani, Sujay Manish, additional, Dong, Xinyi, additional, Eleftheriadis, Konstantinos, additional, Evangeliou, Nikolaos, additional, Faluvegi, Gregory, additional, Flanner, Mark, additional, Fu, Joshua S., additional, Gauss, Michael, additional, Giardi, Fabio, additional, Gong, Wanmin, additional, Hjorth, Jens Liengaard, additional, Huang, Lin, additional, Im, Ulas, additional, Kanaya, Yugo, additional, Krishnan, Srinath, additional, Klimont, Zbigniew, additional, Kühn, Thomas, additional, Langner, Joakim, additional, Law, Kathy S., additional, Marelle, Louis, additional, Massling, Andreas, additional, Olivié, Dirk, additional, Onishi, Tatsuo, additional, Oshima, Naga, additional, Peng, Yiran, additional, Plummer, David A., additional, Popovicheva, Olga, additional, Pozzoli, Luca, additional, Raut, Jean-Christophe, additional, Sand, Maria, additional, Saunders, Laura N., additional, Schmale, Julia, additional, Sharma, Sangeeta, additional, Skeie, Ragnhild Bieltvedt, additional, Skov, Henrik, additional, Taketani, Fumikazu, additional, Thomas, Manu A., additional, Traversi, Rita, additional, Tsigaridis, Kostas, additional, Tsyro, Svetlana, additional, Turnock, Steven, additional, Vitale, Vito, additional, Walker, Kaley A., additional, Wang, Minqi, additional, Watson-Parris, Duncan, additional, and Weiss-Gibbons, Tahya, additional

Published
2022
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41. Supplementary material to "Model evaluation of short-lived climate forcers for the Arctic Monitoring and Assessment Programme: a multi-species, multi-model study"

Author

Whaley, Cynthia H., primary, Mahmood, Rashed, additional, von Salzen, Knut, additional, Winter, Barbara, additional, Eckhardt, Sabine, additional, Arnold, Stephen, additional, Beagley, Stephen, additional, Becagli, Silvia, additional, Chien, Rong-You, additional, Christensen, Jesper, additional, Damani, Sujay M., additional, Eleftheriadis, Kostas, additional, Evangeliou, Nikolaos, additional, Faluvegi, Gregory S., additional, Flanner, Mark, additional, Fu, Joshua S., additional, Gauss, Michael, additional, Giardi, Fabio, additional, Gong, Wanmin, additional, Hjorth, Jens Liengaard, additional, Huang, Lin, additional, Im, Ulas, additional, Kanaya, Yugo, additional, Krishnan, Srinath, additional, Klimont, Zbigniew, additional, Kühn, Thomas, additional, Langner, Joakim, additional, Law, Kathy S., additional, Marelle, Louis, additional, Massling, Andreas, additional, Olivié, Dirk, additional, Onishi, Tatsuo, additional, Oshima, Naga, additional, Peng, Yiran, additional, Plummer, David A., additional, Popovicheva, Olga, additional, Pozzoli, Luca, additional, Raut, Jean-Christophe, additional, Sand, Maria, additional, Saunders, Laura N., additional, Schmale, Julia, additional, Sharma, Sangeeta, additional, Skov, Henrik, additional, Taketani, Fumikazu, additional, Thomas, Manu A., additional, Traversi, Rita, additional, Tsigaridis, Kostas, additional, Tsyro, Svetlana, additional, Turnock, Steven, additional, Vitale, Vito, additional, Walker, Kaley A., additional, Wang, Minqi, additional, Watson-Parris, Duncan, additional, and Weiss-Gibbons, Tahya, additional

Published
2021
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42. Model evaluation of short-lived climate forcers for the Arctic Monitoring and Assessment Programme: a multi-species, multi-model study

Author

Whaley, Cynthia H., primary, Mahmood, Rashed, additional, von Salzen, Knut, additional, Winter, Barbara, additional, Eckhardt, Sabine, additional, Arnold, Stephen, additional, Beagley, Stephen, additional, Becagli, Silvia, additional, Chien, Rong-You, additional, Christensen, Jesper, additional, Damani, Sujay M., additional, Eleftheriadis, Kostas, additional, Evangeliou, Nikolaos, additional, Faluvegi, Gregory S., additional, Flanner, Mark, additional, Fu, Joshua S., additional, Gauss, Michael, additional, Giardi, Fabio, additional, Gong, Wanmin, additional, Hjorth, Jens Liengaard, additional, Huang, Lin, additional, Im, Ulas, additional, Kanaya, Yugo, additional, Krishnan, Srinath, additional, Klimont, Zbigniew, additional, Kühn, Thomas, additional, Langner, Joakim, additional, Law, Kathy S., additional, Marelle, Louis, additional, Massling, Andreas, additional, Olivié, Dirk, additional, Onishi, Tatsuo, additional, Oshima, Naga, additional, Peng, Yiran, additional, Plummer, David A., additional, Popovicheva, Olga, additional, Pozzoli, Luca, additional, Raut, Jean-Christophe, additional, Sand, Maria, additional, Saunders, Laura N., additional, Schmale, Julia, additional, Sharma, Sangeeta, additional, Skov, Henrik, additional, Taketani, Fumikazu, additional, Thomas, Manu A., additional, Traversi, Rita, additional, Tsigaridis, Kostas, additional, Tsyro, Svetlana, additional, Turnock, Steven, additional, Vitale, Vito, additional, Walker, Kaley A., additional, Wang, Minqi, additional, Watson-Parris, Duncan, additional, and Weiss-Gibbons, Tahya, additional

Published
2021
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43. Crowd Research at School: Crossing Flows

Author

Bamberger, Johanna, primary, Geßler, Anna-Lena, additional, Heitzelmann, Peter, additional, Korn, Sara, additional, Kahlmeyer, Rene, additional, Lu, Xue Hao, additional, Sang, Qi Hao, additional, Wang, Zhi Jie, additional, Yuan, Guan Zong, additional, Gauß, Michael, additional, and Kretz, Tobias, additional

Published
2014
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44. Estimating lockdown-induced European NO2 changes using satellite and surface observations and air quality models

Author

Barré, Jérôme, Petetin, Hervé, Colette, Augustin, Guevara, Marc, Peuch, Vincent-Henri, Rouil, Laurence, Engelen, Richard, Inness, Antje, Flemming, Johannes, Pérez García-Pando, Carlos, Bowdalo, Dene, Meleux, Frederik, Geels, Camilla, Christensen, Jesper, Gauss, Michael, Benedictow, Anna, Tsyro, Svetlana, Friese, Elmar, Struzewska, Joanna, Kaminski, Jacek, Douros, John, Timmermans, Renske, Robertson, Lennart, Adani, Mario, Jorba, Oriol, Joly, Mathieu, Kouznetsov, Rostislav, European Centre for Medium-Range Weather Forecasts (ECMWF), Barcelona Supercomputing Center - Centro Nacional de Supercomputacion (BSC - CNS), Institut National de l'Environnement Industriel et des Risques (INERIS), Institució Catalana de Recerca i Estudis Avançats (ICREA), Aarhus University [Aarhus], Norwegian Meteorological Institute [Oslo] (MET), Rhenish Institute for Environmental Research (RIU), University of Cologne, INSTITUTE OF ENVIRONMENTAL PROTECTION WARSAW POL, Partenaires IRSTEA, Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Institute of Geophysics [Warsaw], Polska Akademia Nauk = Polish Academy of Sciences (PAN), Royal Netherlands Meteorological Institute (KNMI), The Netherlands Organisation for Applied Scientific Research (TNO), Swedish Meteorological and Hydrological Institute (SMHI), Agenzia Nazionale per le nuove Tecnologie, l’energia e lo sviluppo economico sostenibile = Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Centre national de recherches météorologiques (CNRM), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Finnish Meteorological Institute (FMI), Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), and Météo France-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Meteorology and Atmospheric Sciences, Meteorologi och atmosfärforskning, [SDE]Environmental Sciences, ddc:550
Abstract

This study provides a comprehensive assessment of NO2 changes across the main European urban areas induced by COVID-19 lockdowns using satellite retrievals from the Tropospheric Monitoring Instrument (TROPOMI) onboard the Sentinel-5p satellite, surface site measurements, and simulations from the Copernicus Atmosphere Monitoring Service (CAMS) regional ensemble of air quality models. Some recent TROPOMI-based estimates of changes in atmospheric NO2 concentrations have neglected the influence of weather variability between the reference and lockdown periods. Here we provide weather-normalized estimates based on a machine learning method (gradient boosting) along with an assessment of the biases that can be expected from methods that omit the influence of weather. We also compare the weather-normalized satellite-estimated NO2 column changes with weather-normalized surface NO2 concentration changes and the CAMS regional ensemble, composed of 11 models, using recently published estimates of emission reductions induced by the lockdown. All estimates show similar NO2 reductions. Locations where the lockdown measures were stricter show stronger reductions, and, conversely, locations where softer measures were implemented show milder reductions in NO2 pollution levels. Average reduction estimates based on either satellite observations (−23 %), surface stations (−43 %), or models (−32 %) are presented, showing the importance of vertical sampling but also the horizontal representativeness. Surface station estimates are significantly changed when sampled to the TROPOMI overpasses (−37 %), pointing out the importance of the variability in time of such estimates. Observation-based machine learning estimates show a stronger temporal variability than model-based estimates.

Published
2021

45. Monthly resolved modelled oceanic emissions of carbonyl sulfide and carbon disulfide for the period 2000–2019

Author

Lennartz, Sinikka T., Gauss, Michael, von Hobe, Marc, Marandino, Christa A., Lennartz, Sinikka T., Gauss, Michael, von Hobe, Marc, and Marandino, Christa A.

Abstract

Carbonyl sulfide (OCS) is the most abundant, long-lived sulphur gas in the atmosphere and a major supplier of sulfur to the stratospheric sulfate aerosol layer. The short-lived gas carbon disulfide (CS2) is oxidized to OCS and constitutes a major indirect source to the atmospheric OCS budget. The atmospheric budget of OCS is not well constrained due to a large missing source needed to compensate for substantial evidence that was provided for significantly higher sinks. Oceanic emissions are associated with major uncertainties. Here we provide a first, monthly resolved ocean emission inventory of both gases for the period 2000–2019 (available at https://doi.org/10.5281/zenodo.4297010) (Lennartz et al., 2020a). Emissions are calculated with a numerical box model (resolution 2.8° × 2.8° at equator, T42 grid) for the surface mixed layer. We find that interannual variability in OCS emissions is smaller than seasonal variability, and is mainly driven by variations in chromophoric dissolved organic matter (CDOM), which influences both photochemical and light-independent production. A comparison with a global database of more than 2500 measurements reveals overall good agreement. Emissions of CS2 constitute a larger sulfur source to the atmosphere than OCS, and equally show interannual variability connected to variability of CDOM. The emission estimate of CS2 is associated with higher uncertainties, as process understanding of the marine cycling of CS2 is incomplete. We encourage the use of the data provided here as input for atmospheric modelling studies to further assess the atmospheric OCS budget and the role of OCS in climate.

Published
2021
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47. Estimating lockdown induced European NO2 changes

Author

Barré, Jérôme, Petetin, Hervé, Colette, Augustin, Guevara, Marc, Peuch, Vincent-Henri, Rouil, Laurence, Engelen, Richard, Inness, Antje, Flemming, Johannes, Pérez García-Pando, Carlos, Bowdalo, Dene, Meleux, Frederik, Geels, Camilla, Christensen, Jesper H., Gauss, Michael, Benedictow, Anna, Tsyro, Svetlana, Friese, Elmar, Struzewska, Joanna, Kaminski, Jacek W., Douros, John, Timmermans, Renske, Robertson, Lennart, Adani, Mario, Jorba, Oriol, Joly, Mathieu, and Kouznetsov, Rostislav

Abstract

This study provides a comprehensive assessment of NO2 changes across the main European urban areas induced by the COVID-19 lockdown using satellite retrievals from the Tropospheric Monitoring Instrument (TROPOMI), surface site measurements and simulations from the Copernicus Atmospheric Monitoring Service (CAMS) regional ensemble of air quality models. Some recent TROPOMI-based estimates of NO2 changes have neglected the influence of weather variability between the reference and lockdown periods. Here we provide weather-normalized estimates based on a machine learning method (gradient boosting) along with an assessment of the biases that can be expected from methods that omit the influence of weather. We also compare the weather-normalized satellite NO2 column changes with both weather-normalized surface NO2 concentration changes and simulated changes by the CAMS regional ensemble, composed of 11 models, using recently published emission reductions induced by the lockdown. We show that all estimates show the same tendency on NO2 reductions. Locations where the lockdown was stricter show stronger reductions and, conversely, locations where softer measures were implemented show milder reductions in NO2 pollution levels. Regarding average reductions, estimates based on either satellite observations (−23 %) surface stations (−43 %) or models (−32 %) are presented, showing the importance of vertical sampling but also the horizontal representativeness. Surface station estimates are significantly changed when sampled to the TROPOMI overpasses (−37 %) pointing out the importance of the variability in time of such estimates. Observation based machine learning estimates show a stronger temporal variability than the model-based estimates.

Published
2020

50. Atmospheric Composition Change

Author

Isaksen, Ivar S.A., primary, Granier, Claire, additional, Myhre, G., additional, Berntsen, Terje, additional, Dalsøren, Stig B., additional, Gauss, Michael, additional, Klimont, Zbigniew, additional, Benestad, Rasmus, additional, Bousquet, Philippe, additional, Collins, W., additional, Cox, Tony, additional, Eyring, Veronika, additional, Fowler, David, additional, Fuzzi, Sandro, additional, Jöckel, Patrick, additional, Laj, Paolo, additional, Lohmann, Ulrike, additional, Maione, Michela, additional, Monks, Paul, additional, Prevot, Andre S.H., additional, Raes, F., additional, Richter, Andreas, additional, Rognerud, B., additional, Schulz, Michael, additional, Shindell, Drew, additional, Stevenson, David, additional, Storelvmo, Trude, additional, Wang, Wei-Chyung, additional, Weele, Michiel van, additional, Wild, Martin, additional, and Wuebbles, Donald J., additional

Published
2012
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