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Title: The global methane budget 2000–2012

The global methane (CH 4) budget is becoming an increasingly important component for managing realistic pathways to mitigate climate change. This relevance, due to a shorter atmospheric lifetime and a stronger warming potential than carbon dioxide, is challenged by the still unexplained changes of atmospheric CH 4 over the past decade. Emissions and concentrations of CH 4 are continuing to increase, making CH 4 the second most important human-induced greenhouse gas after carbon dioxide. Two major difficulties in reducing uncertainties come from the large variety of diffusive CH 4 sources that overlap geographically, and from the destruction of CH 4 by the very short-lived hydroxyl radical (OH). To address these difficulties, we have established a consortium of multi-disciplinary scientists under the umbrella of the Global Carbon Project to synthesize and stimulate research on the methane cycle, and producing regular (~biennial) updates of the global methane budget. This consortium includes atmospheric physicists and chemists, biogeochemists of surface and marine emissions, and socio-economists who study anthropogenic emissions. Following Kirschke et al. (2013), we propose here the first version of a living review paper that integrates results of top-down studies (exploiting atmospheric observations within an atmospheric inverse-modelling framework) and bottom-up models, inventories andmore » data-driven approaches (including process-based models for estimating land surface emissions and atmospheric chemistry, and inventories for anthropogenic emissions, data-driven extrapolations).« less
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  1. Univ. Paris-Saclay, Gif-sur-Yvette (France)
  2. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
  3. CSIRO Oceans and Atmosphere, Canberra, ACT (Australia)
  4. NOAA ESRL, Boulder, CO (United States)
  5. Istituto Nazionale di Geofisica e Vulcanologia, Rome (Italy)
  6. Linkoping Univ., Linkoping (Sweden)
  7. Netherlands Institute for Space Research (SRON), Utrecht (The Netherlands); Institute for Marine and Atmospheric Research, Utrecht (The Netherlands)
  8. European Commission Joint Research Centre, Ispra (Italy)
  9. Food and Agriculture Organization of the United Nations (FAO), Rome (Italy)
  10. Seconda Univ. di Napoli, Caserta (Italy); Far East Federal Univ. (FEFU), Russky Island (Russia); Euro-Mediterranean Center on Climate Change, Lecce (Italy)
  11. Stanford Univ., Stanford, CA (United States)
  12. Canadian Centre for Climate Modelling and Analysis, Victoria, BC (Canada)
  13. Univ. of Sheffield, Sheffield (United Kingdom)
  14. Univ. of California, Irvine, CA (United States)
  15. National Institute of Water and Atmospheric Reserch, Wellington (New Zealand)
  16. Max Planck Institute for Meteorology, Hamburg (Germany)
  17. NOAA-ESRL, Boulder, CO (United States)
  18. Ecole Polytechnique, Palaiseau (France)
  19. Dept of Geological Sciences and Bolin Centre for Climate Research, Stockholm (Sweden)
  20. Yale Univ., New Haven, CT (United States)
  21. Univ. of Victoria, Victoria, BC (Canada)
  22. Jet Propulsion Lab., Pasadena, CA (United States)
  23. Met Office Hadley Centre, Wallingford (United Kingdom)
  24. International Institute for Applied Systems Analysis (IIASA), Laxenburg (Austria)
  25. National Institute for Environmental Studies (NIES), Ibaraki (Japan)
  26. Univ. of Bern, Bern (Switzerland)
  27. Max Planck Institute of Meteorology, Hamburg (Germany)
  28. CSIRO Oceans and Atmospheric, Aspendale, VIC (Australia)
  29. NCAR, Boulder, CO (United States)
  30. City Univ. of New York, New York, NY (United States)
  31. Max Planck Institute for Biogeochemistry, Jena (Germany)
  32. Environment and Climate Change Canada, Victoria, BC (Canada)
  33. NOAA, Princeton, NJ (United States)
  34. Univ. of Bristol, Bristol (United Kingdom)
  35. Lund Univ., Lund (Sweden)
  36. Dept. of Environmental Geochemical Cycle Research, Yokohama (Japan)
  37. Univ. of Quebec, Montreal, QC (Canada)
  38. Center for International Climate and Environmental Research - Oslo (CICERO), Oslo (Norway)
  39. CNSR/LERMA, Paris (France)
  40. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  41. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  42. Euro-Mediterranean Center on Climate Change, Leece (Italy)
  43. City Univ. of New York, New York, NY (United States); Univ. of Hohenheim, Stuttgart (Germany)
  44. Japan Meteorological Agency (JMA), Tokyo (Japan)
  45. Dept. of Geological Sciences and Bolin Centre for Climate Research, Stockholm (Sweden)
  46. Auburn Univ., Auburn, AL (United States)
  47. Imperial College London, London (United Kingdom)
  48. KNMU, De Bilt (The Netherlands)
  49. VU Amsterdam, Amsterdam (The Netherlands)
  50. Univ. of California San Diego, La Jolla, CA (United States)
  51. Met Office Hadley Centre, Exeter (United Kingdom)
  52. Environmental Canada, Toronto (Canada)
  53. Univ. of Toronto, Toronto, ON (Canada)
  54. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States); Swiss Federal Research Institute WSL, Birmensdorf (Switzerland)
  55. Northwest A&F Univ., Shaanxi (China)
Publication Date:
Grant/Contract Number:
AC02-05CH11231
Type:
Accepted Manuscript
Journal Name:
Earth System Science Data (Online)
Additional Journal Information:
Journal Name: Earth System Science Data (Online); Journal Volume: 8; Journal Issue: 2; Journal ID: ISSN 1866-3516
Publisher:
Copernicus
Research Org:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES
OSTI Identifier:
1379611