DOI: 10.1002/2016GL070649
论文题名: Role of regional wetland emissions in atmospheric methane variability
作者: McNorton J. ; Gloor E. ; Wilson C. ; Hayman G.D. ; Gedney N. ; Comyn-Platt E. ; Marthews T. ; Parker R.J. ; Boesch H. ; Chipperfield M.P.
刊名: Geophysical Research Letters
ISSN: 0094-8452
EISSN: 1944-8183
出版年: 2016
卷: 43, 期: 21 起始页码: 11433
结束页码: 11444
语种: 英语
英文关键词: atmosphere
; methane
; wetlands
Scopus关键词: Atmospheric chemistry
; Atmospheric radiation
; Digital storage
; Earth atmosphere
; Greenhouse gases
; Methane
; Atmospheric methanes
; Atmospheric model simulations
; Increasing temperatures
; Integrated effects
; Land surface modeling
; Radiative forcings
; Surface observation
; Wetland emissions
; Wetlands
英文摘要: Atmospheric methane (CH4) accounts for ~20% of the total direct anthropogenic radiative forcing by long-lived greenhouse gases. Surface observations show a pause (1999–2006) followed by a resumption in CH4 growth, which remain largely unexplained. Using a land surface model, we estimate wetland CH4 emissions from 1993 to 2014 and study the regional contributions to changes in atmospheric CH4. Atmospheric model simulations using these emissions, together with other sources, compare well with surface and satellite CH4 data. Modeled global wetland emissions vary by ±3%/yr (σ = 4.8 Tg), mainly due to precipitation-induced changes in wetland area, but the integrated effect makes only a small contribution to the pause in CH4 growth from 1999 to 2006. Increasing temperature, which increases wetland area, drives a long-term trend in wetland CH4 emissions of +0.2%/yr (1999 to 2014). The increased growth post-2006 was partly caused by increased wetland emissions (+3%), mainly from Tropical Asia, Southern Africa, and Australia. ©2016. The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84998772075&doi=10.1002%2f2016GL070649&partnerID=40&md5=e516f0aec31af388013719ea77e5546c
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9415
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: School of Earth and Environment, University of Leeds, Leeds, United Kingdom
Recommended Citation:
McNorton J.,Gloor E.,Wilson C.,et al. Role of regional wetland emissions in atmospheric methane variability[J]. Geophysical Research Letters,2016-01-01,43(21).