Search Results - "Berchet, A"

Natural and anthropogenic methane fluxes in Eurasia: a mesoscale quantification by generalized atmospheric inversion by Berchet, A, Pison, I, Chevallier, F, Paris, J.-D, Bousquet, P, Bonne, J.-L, Arshinov, M. Y, Belan, B. D, Cressot, C, Davydov, D. K, Dlugokencky, E. J, Fofonov, A. V, Galanin, A, Lavrič, J, Machida, T, Parker, R, Sasakawa, M, Spahni, R, Stocker, B. D, Winderlich, J

“…Eight surface observation sites providing quasi-continuous measurements of atmospheric methane mixing ratios have been operated since the mid-2000's in…”
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Towards better error statistics for atmospheric inversions of methane surface fluxes by Berchet, A, Pison, I, Chevallier, F, Bousquet, P, Conil, S, Geever, M, Laurila, T, Lavrič, J, Lopez, M, Moncrieff, J, Necki, J, Ramonet, M, Schmidt, M, Steinbacher, M, Tarniewicz, J

“…We adapt general statistical methods to estimate the optimal error covariance matrices in a regional inversion system inferring methane surface emissions from…”
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Objectified quantification of uncertainties in Bayesian atmospheric inversions by Berchet, A, Pison, I, Chevallier, F, Bousquet, P, Bonne, J.-L, Paris, J.-D

“…Classical Bayesian atmospheric inversions process atmospheric observations and prior emissions, the two being connected by an observation operator picturing…”
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Instantaneous volumic concentration and velocity measurements of a jet in crossflow for the evaluation of the entrainment by Berchet, A., Thomas, L., Braud, P., David, L.

“…A new method employing instantaneous 3D coupled measurements of planar laser-induced fluorescence and particle Image velocimetry is developed to compute 3D…”
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A 4.5 Year‐Long Record of Svalbard Water Vapor Isotopic Composition Documents Winter Air Mass Origin by Leroy‐Dos Santos, C., Masson‐Delmotte, V., Casado, M., Fourré, E., Steen‐Larsen, H. C., Maturilli, M., Orsi, A., Berchet, A., Cattani, O., Minster, B., Gherardi, J., Landais, A.

“…From May 2014 to September 2018, a laser spectrometer analyzer provided a 4.5 years continuous record of water vapor isotopic composition at Ny‐Ålesund…”
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Surface networks in the Arctic may miss a future methane bomb by Wittig, Sophie, Berchet, Antoine, Pison, Isabelle, Saunois, Marielle, Paris, Jean-Daniel

“…The Arctic is warming up to 4 times faster than the global average, leading to significant environmental changes. Given the sensitivity of natural methane…”
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Investigation of the renewed methane growth post-2007 with high-resolution 3-D variational inverse modeling and isotopic constraints by Thanwerdas, Joël, Saunois, Marielle, Berchet, Antoine, Pison, Isabelle, Bousquet, Philippe

“…We investigate the causes of the renewed growth of atmospheric methane (CH4) amount fractions after 2007 by using variational inverse modeling with a…”
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Plant gross primary production, plant respiration and carbonyl sulfide emissions over the globe inferred by atmospheric inverse modelling by Remaud, Marine, Chevallier, Frédéric, Maignan, Fabienne, Belviso, Sauveur, Berchet, Antoine, Parouffe, Alexandra, Abadie, Camille, Bacour, Cédric, Lennartz, Sinikka, Peylin, Philippe

“…Carbonyl sulfide (COS), a trace gas showing striking similarity to CO2 in terms of biochemical diffusion pathway into leaves, has been recognized as a…”
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NOx emissions in France in 2019–2021 as estimated by the high-spatial-resolution assimilation of TROPOMI NO2 observations by Plauchu, Robin, tems-Cheiney, Audrey, Broquet, Grégoire, Pison, Isabelle, Berchet, Antoine, Potier, Elise, Dufour, Gaëlle, Coman, Adriana, Savas, Dilek, Siour, Guillaume, Eskes, Henk

“…Since 2018, the TROPOspheric Monitoring Instrument (TROPOMI) on board the Sentinel-5 Precursor (S5P) has provided unprecedented images of nitrogen dioxide…”
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How do Cl concentrations matter for the simulation of CH4 and δ13C(CH4) and estimation of the CH4 budget through atmospheric inversions? by Thanwerdas, Joël, Saunois, Marielle, Pison, Isabelle, Hauglustaine, Didier, Berchet, Antoine, Baier, Bianca, Sweeney, Colm, Bousquet, Philippe

“…Atmospheric methane (CH4) concentrations have been rising since 2007 due to an imbalance between CH4 sources and sinks. The CH4 budget is generally estimated…”
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Shipborne measurements of methane and carbon dioxide in the Middle East and Mediterranean areas and the contribution from oil and gas emissions by Paris, Jean-Daniel, Riandet, Aurélie, Bourtsoukidis, Efstratios, Delmotte, Marc, Berchet, Antoine, Williams, Jonathan, Ernle, Lisa, Tadic, Ivan, Harder, Hartwig, Lelieveld, Jos

“…The increase of atmospheric methane (CH4) and carbon dioxide (CO2), two of the main anthropogenic greenhouse gases, is largely driven by fossil sources…”
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Analysis of the Anthropogenic and Biogenic NOx Emissions Over 2008–2017: Assessment of the Trends in the 30 Most Populated Urban Areas in Europe by Fortems‐Cheiney, A., Broquet, G., Pison, I., Saunois, M., Potier, E., Berchet, A., Dufour, G., Siour, G., Denier van der Gon, H., Dellaert, S. N. C., Boersma, K. F.

“…We use the OMI‐QA4ECV‐v1.1 NO2 tropospheric columns over the 10‐year 2008–2017 period to confront satellite‐based trends in NO2 concentrations to those from…”
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CO anthropogenic emissions in Europe from 2011 to 2021: insights from Measurement of Pollution in the Troposphere (MOPITT) satellite data by Fortems-Cheiney, Audrey, Broquet, Gregoire, Potier, Elise, Plauchu, Robin, Berchet, Antoine, Pison, Isabelle, Denier van der Gon, Hugo, Dellaert, Stijn

“…​​​​​​​We have used the variational inversion drivers of the recent Community Inversion Framework (CIF), coupled to a European configuration of the CHIMERE…”
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Using ship-borne observations of methane isotopic ratio in the Arctic Ocean to understand methane sources in the Arctic by Berchet, Antoine, Pison, Isabelle, Crill, Patrick M, Thornton, Brett, Bousquet, Philippe, Thonat, Thibaud, Hocking, Thomas, Thanwerdas, Joël, Paris, Jean-Daniel, Saunois, Marielle

“…Characterizing methane sources in the Arctic remains challenging due to the remoteness, heterogeneity and variety of such emissions. In situ campaigns provide…”
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Inter-model comparison of global hydroxyl radical (OH) distributions and their impact on atmospheric methane over the 2000–2016 period by Zhao, Yuanhong, Saunois, Marielle, Bousquet, Philippe, Lin, Xin, Berchet, Antoine, Hegglin, Michaela I., Canadell, Josep G., Jackson, Robert B., Hauglustaine, Didier A., Szopa, Sophie, Stavert, Ann R., Abraham, Nathan Luke, Archibald, Alex T., Bekki, Slimane, Deushi, Makoto, Jöckel, Patrick, Josse, Béatrice, Kinnison, Douglas, Kirner, Ole, Marécal, Virginie, O'Connor, Fiona M., Plummer, David A., Revell, Laura E., Rozanov, Eugene, Stenke, Andrea, Strode, Sarah, Tilmes, Simone, Dlugokencky, Edward J., Zheng, Bo

“…The modeling study presented here aims to estimate how uncertainties in global hydroxyl radical (OH) distributions, variability, and trends may contribute to…”
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Analysis of the Anthropogenic and Biogenic NO x Emissions Over 2008–2017: Assessment of the Trends in the 30 Most Populated Urban Areas in Europe by Fortems‐Cheiney, A., Broquet, G., Pison, I., Saunois, M., Potier, E., Berchet, A., Dufour, G., Siour, G., Denier van der Gon, H., Dellaert, S. N. C., Boersma, K. F.

“…Abstract We use the OMI‐QA4ECV‐v1.1 NO 2 tropospheric columns over the 10‐year 2008–2017 period to confront satellite‐based trends in NO 2 concentrations to…”
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Influences of hydroxyl radicals (OH) on top-down estimates of the global and regional methane budgets by Zhao, Yuanhong, Saunois, Marielle, Bousquet, Philippe, Lin, Xin, Berchet, Antoine, Hegglin, Michaela I, Canadell, Josep G, Jackson, Robert B, Dlugokencky, Edward J, Langenfelds, Ray L, Ramonet, Michel, Worthy, Doug, Zheng, Bo

“…The hydroxyl radical (OH), which is the dominant sink of methane (CH4), plays a key role in closing the global methane budget. Current top-down estimates of…”
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Disentangling methane and carbon dioxide sources and transport across the Russian Arctic from aircraft measurements by Narbaud, Clément, Paris, Jean-Daniel, Wittig, Sophie, Berchet, Antoine, Saunois, Marielle, Nédélec, Philippe, Belan, Boris D, Arshinov, Mikhail Y, Belan, Sergei B, Davydov, Denis, Fofonov, Alexander, Kozlov, Artem

“…A more accurate characterization of the sources and sinks of methane (CH4) and carbon dioxide (CO2) in the vulnerable Arctic environment is required to better…”
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On the Role of Trend and Variability of Hydroxyl Radical (OH) in the Global Methane Budget by Zhao, Yuanhong, Saunois, Marielle, Bousquet, Philippe, Lin, Xin, Berchet, Antoine, Hegglin, Michaela I., Canadell, Josep G., Jackson, Robert B., Deushi, Makoto, Jockel, Patrick, Kinnison, Douglas, Kirner, Ole, Strode, Sarah A, Tilmes, Simone, Dlugokencky, Edward J., Zheng, Bo

“…Decadal trends and interannual variations in the hydroxyl radical (OH), while poorly constrained at present, are critical for understanding the observed…”
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Estimating methane emissions in the Arctic nations using surface observations from 2008 to 2019 by Wittig, Sophie, Berchet, Antoine, Pison, Isabelle, Saunois, Marielle, Thanwerdas, Joël, Martinez, Adrien, Paris, Jean-Daniel, Machida, Toshinobu, Sasakawa, Motoki, Worthy, Douglas E. J, Lan, Xin, Thompson, Rona L, Sollum, Espen, Arshinov, Mikhail

“…The Arctic is a critical region in terms of global warming. Environmental changes are already progressing steadily in high northern latitudes, whereby, among…”
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