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Nisbet, E.G. (author), Manning, M.R. (author), Dlugokencky, E.J. (author), Michel, S.E. (author), Lan, X. (author), Röckmann, T. (author), Denier van der Gon, H.A.C. (author), Schmitt, J. (author), Palmer, P.I. (author), Dyonisius, M.N. (author), Oh, Y. (author), Fisher, R.E. (author), Lowry, D. (author), France, J.L. (author), White, J.W.C. (author), Brailsford, G. (author), Bromley, T. (author)Atmospheric methane's rapid growth from late 2006 is unprecedented in the observational record. Assessment of atmospheric methane data attributes a large fraction of this atmospheric growth to increased natural emissions over the tropics, which appear to be responding to changes in anthropogenic climate forcing. Isotopically lighter measurements...article 2023
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Mannisenaho, V. (author), Tsuruta, A. (author), Backman, L. (author), Houweling, S. (author), Segers, A.J. (author), Krol, M. (author), Saunois, M. (author), Poulter, B. (author), Zhang, Z. (author), Lan, X. (author), Dlugokencky, E.J. (author), Michel, S. (author), White, J.W.C. (author), Aalto, T. (author)This study investigates atmospheric (Formula presented.) CH (Formula presented.) trends, as produced by a global atmospheric transport model using CH (Formula presented.) inversions from CarbonTracker-Europe CH (Formula presented.) for 2000-2020, and compares them to observations. The CH (Formula presented.) inversions include the grouping of...article 2023
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Kangasaho, V. (author), Tsuruta, A. (author), Backman, L. (author), Makinen, P. (author), Houweling, S. (author), Segers, A. (author), Krol, M. (author), Dlugokencky, E.J. (author), Michel, S. (author), White, J.W.C. (author), Aalto, T. (author)This study investigates the contribution of different CH4 sources to the seasonal cycle of δ13C during 2000–2012 by using the TM5 atmospheric transport model, including spatially varying information on isotopic signatures. The TM5 model is able to produce the background seasonality of δ13C, but the discrepancies compared to the observations...article 2022
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Saunois, M. (author), Stavert, A.R. (author), Poulter, B. (author), Bousquet, P. (author), Canadell, J.G. (author), Jackson, R.B. (author), Raymond, P.A. (author), Dlugokencky, E.J. (author), Houweling, S. (author), Patra, P.K. (author), Ciais, P. (author), Arora, V.K. (author), Bastviken, D. (author), Bergamaschi, P. (author), Blake, D.R. (author), Brailsford, G. (author), Bruhwiller, L. (author), Carlson, K.M. (author), Carroll, M. (author), Castaldi, S. (author), Chandra, N. (author), Crevoisier, C. (author), Crill, P.M. (author), Covey, K. (author), Curry, C.L. (author), Etiope, G. (author), Frankenberg, C. (author), Gedney, N. (author), Hegglin, M.I. (author), Hoglund-Isaksson, L. (author), Hugelius, G. (author), Ishizawa, M. (author), Ito, A. (author), Janssens-Maenhout, G. (author), Jensen, K.M. (author), Joos, F. (author), Kleinen, T. (author), Krummel, P.B. (author), Langenfeld, R.L. (author), Laruelle, G. (author), Liu, L. (author), Machida, T. (author), Maksyutov, S. (author), Mc Donald, K.C. (author), Mc Norton, J. (author), Miller, P.A. (author), Melton, J.R. (author), Morino, I. (author), Muller, J. (author), Moruia-Flores, F. (author), Naik, V. (author), Niwa, Y. (author), Noce, S. (author), O'Doherty, S. (author), Parker, R.J. (author), Peng, C. (author), Preng, S. (author), Peters, G.P. (author), Prigent, C. (author), Prinn, R. (author), Ramonet, M. (author), Regnier, P. (author), Riley, W.J. (author), Rosentreter, J.A. (author), Segers, A.J. (author), Simpson, I.J. (author), Shi, H. (author), Smith, S.J. (author), Steele, L.P. (author), Thornton, B.F. (author), Tian, H. (author), Tohjima, Y. (author), Tubiello, F.N. (author), Tsuruta, A. (author), Viovy, N. (author), Voulgarakis, A. (author), Weber, T.S. (author), van Weele, M. (author), van der Werf, G.R. (author), Weiss, R.F. (author), Worthy, D. (author), Wunch, D. (author), Yin, Y. (author), Yoshida, Y. (author), Zhang, W. (author), Zhang, Z. (author), Zhao, Y. (author), Zheng, B. (author), Zhu, Q. (author), Zhu, Q. (author), Zhuang, Q. (author)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...article 2020
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Pandey, S. (author), Houweling, S. (author), Krol, M. (author), Aben, I. (author), Nechita-Banda, N. (author), Thoning, K. (author), Rockmann, T. (author), Yin, Y. (author), Segers, A.J. (author), Dlugokencky, E.J. (author)We quantify the impact of atmospheric transport and limited marine boundary layer sampling on changes in global and regional methane burdens estimate using tracer transport model simulations with annually repeating methane emissions and sinks but varying atmospheric transport patterns. We find the 1σ error due to this transport and sampling...article 2019
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Groot Zwaaftink, C.D. (author), Henne, S. (author), Thompson, R.L. (author), Dlugokencky, E.J. (author), Machida, T. (author), Paris, J.D. (author), Sasakawa, M. (author), Segers, A. (author), Sweeney, C. (author), Stohl, A. (author)A Lagrangian particle dispersion model, the FLEXible PARTicle dispersion chemical transport model (FLEXPART CTM), is used to simulate global three-dimensional fields of trace gas abundance. These fields are constrained with surface observation data through nudging, a data assimilation method, which relaxes model fields to observed values. Such...article 2018