Search Results - "Langenfelds, Ray"

Three Decades of Global Methane Sources and Sinks by Kirschke, Stefanie, Bousquet, Philippe, Ciais, Philippe, Saunois, Marielle, Canadell, Josep G., Dlugokencky, Edward J., Bergamaschi, Peter, Bergmann, Daniel, Blake, Donald R., Bruhwiler, Lori, Cameron-Smith, Philip, Castaldi, Simona, Chevallier, Frédéric, Feng, Liang, Fraser, Annemarie, Heimann, Martin, Hodson, Elke L., Houweling, Sander, Josse, Béatrice, Fraser, Paul J., Krummel, Paul B., Lamarque, Jean-François, Langenfelds, Ray L., Quér, Corinne Le, Naik, Vaishali, O’Doherty, Simon, Palmer, Paul I., Pison, Isabelle, Plummer, David, Poulter, Benjamin, Prinn, Ronald G., Rigby, Matt, Ringeval, Bruno, Schmidt, Martina, Shindell, Drew T., Simpson, Isobel J., Spahni, Renato, Steele, L. Paul, Strode, Sarah A., Sudo, Kengo, Szopa, Sophie, Werf, Guido R. van der, Voulgarakis, Apostolos, Weele, Michiel van, Weiss, Ray F., Williams, Jason E., Zeng, Guang

“…Methane is an important greenhouse gas, responsible for about 20 of the warming induced by long-lived greenhouse gases since pre-industrial times. By reacting…”
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Technical note: A high-resolution inverse modelling technique for estimating surface CO2 fluxes based on the NIES-TM–FLEXPART coupled transport model and its adjoint by Maksyutov, Shamil, Oda, Tomohiro, Saito, Makoto, Janardanan, Rajesh, Belikov, Dmitry, Kaiser, Johannes W, Zhuravlev, Ruslan, Ganshin, Alexander, Valsala, Vinu K, Andrews, Arlyn, Chmura, Lukasz, Dlugokencky, Edward, Haszpra, László, Langenfelds, Ray L, Machida, Toshinobu, Nakazawa, Takakiyo, Ramonet, Michel, Sweeney, Colm, Worthy, Douglas

“…We developed a high-resolution surface flux inversion system based on the global Eulerian–Lagrangian coupled tracer transport model composed of the National…”
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Weak northern and strong tropical land carbon uptake from vertical profiles of atmospheric CO2 by Stephens, Britton B, Gurney, Kevin R, Tans, Pieter P, Sweeney, Colm, Peters, Wouter, Bruhwiler, Lori, Ciais, Philippe, Ramonet, Michel, Bousquet, Philippe, Nakazawa, Takakiyo, Aoki, Shuji, Machida, Toshinobu, Inoue, Gen, Vinnichenko, Nikolay, Lloyd, Jon, Jordan, Armin, Heimann, Martin, Shibistova, Olga, Langenfelds, Ray L, Steele, L Paul, Francey, Roger J, Denning, A Scott

“…Measurements of midday vertical atmospheric CO2 distributions reveal annual-mean vertical CO2 gradients that are inconsistent with atmospheric models that…”
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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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Global increase of ozone-depleting chlorofluorocarbons from 2010 to 2020 by Western, Luke M., Vollmer, Martin K., Krummel, Paul B., Adcock, Karina E., Crotwell, Molly, Fraser, Paul J., Harth, Christina M., Langenfelds, Ray L., Montzka, Stephen A., Mühle, Jens, O’Doherty, Simon, Oram, David E., Reimann, Stefan, Rigby, Matt, Vimont, Isaac, Weiss, Ray F., Young, Dickon, Laube, Johannes C.

“…The production of chlorofluorocarbons (CFCs) that would ultimately be released to the atmosphere was banned globally in 2010 under the Montreal Protocol. Here…”
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H₂ in Antarctic firn air: Atmospheric reconstructions and implications for anthropogenic emissions by Patterson, John D., Aydin, Murat, Crotwell, Andrew M., Pétron, Gabrielle, Severinghaus, Jeffrey P., Krummel, Paul B., Langenfelds, Ray L., Saltzman, Eric S.

“…The atmospheric history of molecular hydrogen (H₂) from 1852 to 2003 was reconstructed from measurements of firn air collected at Megadunes, Antarctica. The…”
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H 2 in Antarctic firn air: Atmospheric reconstructions and implications for anthropogenic emissions by Patterson, John D, Aydin, Murat, Crotwell, Andrew M, Pétron, Gabrielle, Severinghaus, Jeffrey P, Krummel, Paul B, Langenfelds, Ray L, Saltzman, Eric S

“…The atmospheric history of molecular hydrogen (H ) from 1852 to 2003 was reconstructed from measurements of firn air collected at Megadunes, Antarctica. The…”
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Evaluating the contribution of the unexplored photochemistry of aldehydes on the tropospheric levels of molecular hydrogen (H 2 ) by Pérez-Peña, Maria Paula, Fisher, Jenny A, Millet, Dylan B, Yashiro, Hisashi, Langenfelds, Ray L, Krummel, Paul B, Kable, Scott H

“…Molecular hydrogen, H2, is one of the most abundant trace gases in the atmosphere. The main known chemical source of H2 in the atmosphere is the photolysis of…”
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Country-Scale Analysis of Methane Emissions with a High-Resolution Inverse Model Using GOSAT and Surface Observations by Janardanan, Rajesh, Maksyutov, Shamil, Tsuruta, Aki, Wang, Fenjuan, Tiwari, Yogesh K., Valsala, Vinu, Ito, Akihiko, Yoshida, Yukio, Kaiser, Johannes W., Janssens-Maenhout, Greet, Arshinov, Mikhail, Sasakawa, Motoki, Tohjima, Yasunori, Worthy, Douglas E. J., Dlugokencky, Edward J., Ramonet, Michel, Arduini, Jgor, Lavric, Jost V., Piacentino, Salvatore, Krummel, Paul B., Langenfelds, Ray L., Mammarella, Ivan, Matsunaga, Tsuneo

“…We employed a global high-resolution inverse model to optimize the CH4 emission using Greenhouse gas Observing Satellite (GOSAT) and surface observation data…”
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Unexpected nascent atmospheric emissions of three ozone-depleting hydrochlorofluorocarbons by Vollmer, Martin K., Mühle, Jens, Henne, Stephan, Young, Dickon, Rigby, Matthew, Mitrevski, Blagoj, Park, Sunyoung, Lunder, Chris R., Rhee, Tae Siek, Harth, Christina M., Hill, Matthias, Langenfelds, Ray L., Guillevic, Myriam, Schlauri, Paul M., Hermansen, Ove, Arduini, Jgor, Wang, Ray H. J., Salameh, Peter K., Maione, Michela, Krummel, Paul B., Reimann, Stefan, O’Doherty, Simon, Simmonds, Peter G., Fraser, Paul J., Prinn, Ronald G., Weiss, Ray F., Steele, L. Paul

“…Global and regional atmospheric measurements and modeling can play key roles in discovering and quantifying unexpected nascent emissions of environmentally…”
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Author Correction: Global increase of ozone-depleting chlorofluorocarbons from 2010 to 2020 by Western, Luke M., Vollmer, Martin K., Krummel, Paul B., Adcock, Karina E., Crotwell, Molly, Fraser, Paul J., Harth, Christina M., Langenfelds, Ray L., Montzka, Stephen A., Mühle, Jens, O’Doherty, Simon, Oram, David E., Reimann, Stefan, Rigby, Matt, Vimont, Isaac, Weiss, Ray F., Young, Dickon, Laube, Johannes C.

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Variability in a four-network composite of atmospheric CO2 differences between three primary baseline sites by Francey, Roger J, Frederiksen, Jorgen S, Steele, L Paul, Langenfelds, Ray L

“…Spatial differences in the monthly baseline CO2 since 1992 from Mauna Loa (mlo, 19.5∘ N, 155.6∘ W, 3379 m), Cape Grim (cgo, 40.7∘ S, 144.7∘ E, 94 m), and South…”
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Reconstructing atmospheric H2 over the past century from bi-polar firn air records by Patterson, John D, Aydin, Murat, Crotwell, Andrew M, Pétron, Gabrielle, Severinghaus, Jeffery P, Krummel, Paul B, Langenfelds, Ray L, Petrenko, Vasilii V, Saltzman, Eric S

“…Historical atmospheric H2 levels were reconstructed using firn air measurements from two sites in Greenland (NEEM and Summit) and two sites in Antarctica…”
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Abundances, emissions, and loss processes of the long-lived and potent greenhouse gas octafluorooxolane (octafluorotetrahydrofuran, c-C 4 F 8 O) in the atmosphere by Vollmer, Martin K, Bernard, Francois, Mitrevski, Blagoj, Steele, L. Paul, Trudinger, Cathy M, Reimann, Stefan, Langenfelds, Ray L, Krummel, Paul B, Fraser, Paul J, Etheridge, David M, Curran, Mark A. J, Burkholder, James B

“…The first atmospheric observations of octafluorooxolane (octafluorotetrahydrofuran, c-C4F8O), a persistent greenhouse gas, are reported. In addition, a…”
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Atmospheric histories and emissions of chlorofluorocarbons CFC-13 (CClF 3 ), ΣCFC-114 (C 2 Cl 2 F 4 ), and CFC-115 (C 2 ClF 5 ) by Vollmer, Martin K., Young, Dickon, Trudinger, Cathy M., Mühle, Jens, Henne, Stephan, Rigby, Matthew, Park, Sunyoung, Li, Shanlan, Guillevic, Myriam, Mitrevski, Blagoj, Harth, Christina M., Miller, Benjamin R., Reimann, Stefan, Yao, Bo, Steele, L. Paul, Wyss, Simon A., Lunder, Chris R., Arduini, Jgor, McCulloch, Archie, Wu, Songhao, Rhee, Tae Siek, Wang, Ray H. J., Salameh, Peter K., Hermansen, Ove, Hill, Matthias, Langenfelds, Ray L., Ivy, Diane, O'Doherty, Simon, Krummel, Paul B., Maione, Michela, Etheridge, David M., Zhou, Lingxi, Fraser, Paul J., Prinn, Ronald G., Weiss, Ray F., Simmonds, Peter G.

“…Based on observations of the chlorofluorocarbons CFC-13 (chlorotrifluoromethane), ΣCFC-114 (combined measurement of both isomers of dichlorotetrafluoroethane),…”
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Atmospheric verification of anthropogenic CO2 emission trends by Francey, Roger J., Trudinger, Cathy M., van der Schoot, Marcel, Law, Rachel M., Krummel, Paul B., Langenfelds, Ray L., Paul Steele, L., Allison, Colin E., Stavert, Ann R., Andres, Robert J., Rödenbeck, Christian

“…International efforts to limit global warming and ocean acidification aim to slow the growth of atmospheric CO 2 , guided primarily by national and industry…”
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Trends and emissions of six perfluorocarbons in the Northern Hemisphere and Southern Hemisphere by Droste, Elise S, Adcock, Karina E, Ashfold, Matthew J, Chou, Charles, Fleming, ZoÃ, Fraser, Paul J, Gooch, Lauren J, Hind, Andrew J, Langenfelds, Ray L, Leedham Elvidge, Emma, Mohd Hanif, Norfazrin, O'Doherty, Simon, Oram, David E, Ou-Yang, Chang-Feng, Panagi, Marios, Reeves, Claire E, Sturges, William T, Laube, Johannes C

“…Perfluorocarbons (PFCs) are potent greenhouse gases with global warming potentials up to several thousand times greater than CO2 on a 100-year time horizon…”
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Results of a long-term international comparison of greenhouse gas and isotope measurements at the Global Atmosphere Watch (GAW) Observatory in Alert, Nunavut, Canada by Worthy, Douglas E. J, Rauh, Michele K, Huang, Lin, Vogel, Felix R, Chivulescu, Alina, Masarie, Kenneth A, Langenfelds, Ray L, Krummel, Paul B, Allison, Colin E, Crotwell, Andrew M, Madronich, Monica, Pétron, Gabrielle, Levin, Ingeborg, Hammer, Samuel, Michel, Sylvia, Ramonet, Michel, Schmidt, Martina, Jordan, Armin, Moossen, Heiko, Rothe, Michael, Keeling, Ralph, Morgan, Eric J

“…Since 1999, Environment and Climate Change Canada (ECCC) has been coordinating a multi-laboratory comparison of measurements of long-lived greenhouse gases in…”
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Southern Hemisphere atmospheric history of carbon monoxide over the late Holocene reconstructed from multiple Antarctic ice archives by Faïn, Xavier, Etheridge, David M, Fourteau, Kévin, Martinerie, Patricia, Trudinger, Cathy M, Rhodes, Rachael H, Chellman, Nathan J, Langenfelds, Ray L, McConnell, Joseph R, Curran, Mark A. J, Brook, Edward J, Blunier, Thomas, Teste, Grégory, Grilli, Roberto, Lemoine, Anthony, Sturges, William T, Vannière, Boris, Freitag, Johannes, Chappellaz, Jérôme

“…Carbon monoxide (CO) is a naturally occurring atmospheric trace gas, a regulated pollutant, and one of the main components determining the oxidative capacity…”
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Isotopic Ordering in Atmospheric O2 as a Tracer of Ozone Photochemistry and the Tropical Atmosphere by Yeung, Laurence Y., Murray, Lee T., Ash, Jeanine L., Young, Edward D., Boering, Kristie A., Atlas, Elliot L., Schauffler, Sue M., Lueb, Richard A., Langenfelds, Ray L., Krummel, Paul B., Steele, L. Paul, Eastham, Sebastian D.

“…The distribution of isotopes within O2 molecules can be rapidly altered when they react with atomic oxygen. This mechanism is globally important: while other…”
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