Climate feedback from wetland methane emissions

被引:214
作者
Gedney, N
Cox, PM
Huntingford, C
机构
[1] Met Off, Joint Ctr Hydometeorol Res, Wallingford OX10 8BB, Oxon, England
[2] Met Off, Hadley Ctr, Exeter EX1 3PB, Devon, England
[3] Ctr Ecol & Hydrol, Wallingford OX10 8BB, Oxon, England
关键词
D O I
10.1029/2004GL020919
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
The potential for wetland emissions to feedback on climate change has been previously hypothesised [Houghton et al., 2001]. We assess this hypothesis using an interactive wetlands scheme radiatively coupled to an integrated climate change effects model. The scheme predicts wetland area and methane (CH4) emissions from soil temperature and water table depth, and is constrained by optimising its ability to reproduce the observed inter-annual variability in atmospheric CH4. In transient climate change simulations the wetland response amplifies the total anthropogenic radiative forcing at 2100 by about 3.5 - 5%. The modelled increase in global CH4 flux from wetland is comparable to the projected increase in anthropogenic CH4 emissions over the 21st century under the IS92a scenario.
引用
收藏
页码:L205031 / 4
页数:4
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