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Enhanced methane em...
Enhanced methane emissions from tropical wetlands during the 2011 la Niña
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- Pandey, Sudhanshu (author)
- National Instiute for Space Research,Utrecht University
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- Houweling, Sander (author)
- Utrecht University,National Instiute for Space Research
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- Krol, Maarten (author)
- National Instiute for Space Research,Wageningen University,Utrecht University
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- Aben, Ilse (author)
- National Instiute for Space Research
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- Monteil, Guillaume (author)
- Lund University,Lunds universitet,Institutionen för naturgeografi och ekosystemvetenskap,Naturvetenskapliga fakulteten,Dept of Physical Geography and Ecosystem Science,Faculty of Science
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- Nechita-Banda, Narcisa (author)
- National Instiute for Space Research
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- Dlugokencky, Edward J (author)
- National Oceanic and Atmospheric Administration: Earth System Research Laboratory (ESRL)
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- Detmers, Rob (author)
- National Instiute for Space Research
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- Hasekamp, Otto (author)
- National Instiute for Space Research
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- Xu, Xiyan (author)
- Institute of Atmospheric Physics, Chinese Academy of Sciences,Lawrence Berkeley National Laboratory
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- Riley, William J. (author)
- Lawrence Berkeley National Laboratory
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- Poulter, Benjamin (author)
- Montana State University
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- Zhang, Zhen (author)
- Swiss Federal Institute for Forest, Snow and Landscape Research
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- McDonald, Kyle C. (author)
- City University of New York
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- White, James W C (author)
- University of Colorado
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- Bousquet, Philippe (author)
- Laboratoire des Sciences du Climat et de l'Environnement
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- Röckmann, Thomas (author)
- Utrecht University
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(creator_code:org_t)
- 2017-04-10
- 2017
- English.
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In: Scientific Reports. - : Springer Science and Business Media LLC. - 2045-2322. ; 7
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Abstract
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- Year-to-year variations in the atmospheric methane (CH4) growth rate show significant correlation with climatic drivers. The second half of 2010 and the first half of 2011 experienced the strongest La Niña since the early 1980s, when global surface networks started monitoring atmospheric CH4 mole fractions. We use these surface measurements, retrievals of column-averaged CH4 mole fractions from GOSAT, new wetland inundation estimates, and atmospheric δ13C-CH4 measurements to estimate the impact of this strong La Niña on the global atmospheric CH4 budget. By performing atmospheric inversions, we find evidence of an increase in tropical CH4 emissions of ∼6-9 TgCH4 yr-1 during this event. Stable isotope data suggest that biogenic sources are the cause of this emission increase. We find a simultaneous expansion of wetland area, driven by the excess precipitation over the Tropical continents during the La Niña. Two process-based wetland models predict increases in wetland area consistent with observationally-constrained values, but substantially smaller per-area CH4 emissions, highlighting the need for improvements in such models. Overall, tropical wetland emissions during the strong La Niña were at least by 5% larger than the long-term mean.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Klimatforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Climate Research (hsv//eng)
Publication and Content Type
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- ref (subject category)
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- By the author/editor
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Pandey, Sudhansh ...
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Houweling, Sande ...
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Krol, Maarten
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Aben, Ilse
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Monteil, Guillau ...
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Nechita-Banda, N ...
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Dlugokencky, Edw ...
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Detmers, Rob
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Hasekamp, Otto
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Xu, Xiyan
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Riley, William J ...
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Poulter, Benjami ...
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Zhang, Zhen
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McDonald, Kyle C ...
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White, James W C
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Bousquet, Philip ...
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Röckmann, Thomas
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Climate Research
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Scientific Repor ...
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Lund University