Assessing methane emissions from global space-borne observations

被引:306
作者
Frankenberg, C
Meirink, JF
van Weele, M
Platt, U
Wagner, T
机构
[1] Heidelberg Univ, Inst Environm Phys, D-69120 Heidelberg, Germany
[2] Royal Netherlands Meteorol Inst, Sect Atmospher Composit, NL-3730 AE De Bilt, Netherlands
关键词
D O I
10.1126/science.1106644
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
In the past two centuries, atmospheric methane has more than doubled and now constitutes 20% of the anthropogenic climate forcing by greenhouse gases. Yet its sources are not well quantified, introducing uncertainties in its global budget. We retrieved the global methane distribution by using space-borne near-infrared absorption spectroscopy. In addition to the expected latitudinal gradient, we detected large-scale patterns of anthropogenic and natural methane emissions. Furthermore, we observed unexpectedly high methane concentrations over tropical rainforests, revealing that emission inventories considerably underestimated methane sources in these regions during the time period of investigation (August through November 2003).
引用
收藏
页码:1010 / 1014
页数:5
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