globalchange  > 影响、适应和脆弱性
DOI: 10.1002/jgrd.50480
论文题名:
Atmospheric CH<inf>4</inf> in the first decade of the 21st century: Inverse modeling analysis using SCIAMACHY satellite retrievals and NOAA surface measurements
作者: Bergamaschi P.; Houweling S.; Segers A.; Krol M.; Frankenberg C.; Scheepmaker R.A.; Dlugokencky E.; Wofsy S.C.; Kort E.A.; Sweeney C.; Schuck T.; Brenninkmeijer C.; Chen H.; Beck V.; Gerbig C.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期:13
起始页码: 7350
结束页码: 7369
语种: 英语
英文关键词: interannual variability and trends
Scopus关键词: Experiments ; Inverse problems ; Tropics ; Airborne observations ; Anthropogenic emissions ; Emission inventories ; Interannual variability ; Interannual variation ; Inverse modeling analysis ; Northern Hemispheres ; Satellite retrieval ; Surface measurement ; accuracy assessment ; annual variation ; anthropogenic effect ; atmospheric pollution ; emission ; Envisat-1 ; latitude ; measurement method ; methane ; NOAA satellite ; Northern Hemisphere ; numerical model ; satellite imagery ; troposphere ; twenty first century ; Amazonia ; Arctic
英文摘要: The causes of renewed growth in the atmospheric CH4 burden since 2007 are still poorly understood and subject of intensive scientific discussion. We present a reanalysis of global CH4 emissions during the 2000s, based on the TM5-4DVAR inverse modeling system. The model is optimized using high-accuracy surface observations from NOAA ESRL's global air sampling network for 2000-2010 combined with retrievals of column-averaged CH4 mole fractions from SCIAMACHY onboard ENVISAT (starting 2003).Using climatological OH fields, derived global total emissions for 2007-2010 are 16-20 Tg CH 4/yr higher compared to 2003-2005. Most of the inferred emission increase was located in the tropics (9-14 Tg CH4/yr) and mid-latitudes of the northern hemisphere (6-8 Tg CH4/yr), while no significant trend was derived for Arctic latitudes. The atmospheric increase can be attributed mainly to increased anthropogenic emissions, but the derived trend is significantly smaller than estimated in the EDGARv4.2 emission inventory. Superimposed on the increasing trend in anthropogenic CH4 emissions are significant inter-annual variations (IAV) of emissions from wetlands (up to ±10 Tg CH4/yr), and biomass burning (up to ±7 Tg CH4/yr). Sensitivity experiments, which investigated the impact of the SCIAMACHY observations (versus inversions using only surface observations), of the OH fields used, and of a priori emission inventories, resulted in differences in the detailed latitudinal attribution of CH4 emissions, but the IAV and trends aggregated over larger latitude bands were reasonably robust. All sensitivity experiments show similar performance against independent shipboard and airborne observations used for validation, except over Amazonia where satellite retrievals improved agreement with observations in the free troposphere. Key Points A reanalysis of global CH4 emissions during the 2000s is presented derived global total emissions 2007-2010 16-20 Tg CH4/yr higher than 2003-2005 increase mainly in the tropics and NH mid-latitudes ©2013. American Geophysical Union. All Rights Reserved.
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被引频次[WOS]:199   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63579
Appears in Collections:影响、适应和脆弱性
气候减缓与适应

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作者单位: Institute for Environment and Sustainability, Joint Research Centre, European Commission, Ispra, Italy; SRON Netherlands Institute for Space Research, Utrecht, Netherlands; Institute for Marine and Atmospheric Research Utrecht (IMAU), Utrecht, Netherlands; Netherlands Organisation for Applied Scientific Research (TNO), Utrecht, Netherlands; Meteorology and Air Quality Department, Wageningen University and Research Centre, Wageningen, Netherlands; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States; Global Monitoring Division, NOAA Earth System Research Laboratory, Boulder, CO, United States; School of Engineering and Applied Science, Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA, United States; CIRES, University of Colorado, Boulder, CO, United States; Max Planck Institute for Chemistry, Mainz, Germany; Center for Isotope Research, University of Groningen, Groningen, Netherlands; Max Planck Institute for Biogeochemistry, Jena, Germany

Recommended Citation:
Bergamaschi P.,Houweling S.,Segers A.,et al. Atmospheric CH<inf>4</inf> in the first decade of the 21st century: Inverse modeling analysis using SCIAMACHY satellite retrievals and NOAA surface measurements[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(13)
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