A large increase in U.S. methane emissions over the past decade inferred from satellite data and surface observations
A large increase in U.S. methane emissions over the past decade inferred from satellite data and surface observations
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DOI：
10.1002/2016gl067987
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发表时间：
2016-03
影响因子：
5.2
通讯作者：
A. Turner;D. Jacob;J. Benmergui;S. Wofsy;J. Maasakkers;A. Butz;O. Hasekamp;S. Biraud
中科院分区：
文献类型：
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作者：
A. Turner;D. Jacob;J. Benmergui;S. Wofsy;J. Maasakkers;A. Butz;O. Hasekamp;S. Biraud
在过去十年中，全球大气甲烷的负担一直在增加，但其原因尚不清楚。美国环境保护署的国家清单估计表明，从2002年到现在，美国人为甲烷排放量没有明显的趋势。在这里，我们使用卫星检索和大气甲烷的表面观测表明，美国甲烷排放量在2002-2014年期间增加了30%以上。这一趋势在该国中部地区最大，但我们不能轻易将其归因于任何特定的来源类型。美国甲烷排放量的大幅增加可能占过去十年全球大气甲烷增长的30-60%。
The global burden of atmospheric methane has been increasing over the past decade, but the causes are not well understood. National inventory estimates from the U.S. Environmental Protection Agency indicate no significant trend in U.S. anthropogenic methane emissions from 2002 to present. Here we use satellite retrievals and surface observations of atmospheric methane to suggest that U.S. methane emissions have increased by more than 30% over the 2002–2014 period. The trend is largest in the central part of the country, but we cannot readily attribute it to any specific source type. This large increase in U.S. methane emissions could account for 30–60% of the global growth of atmospheric methane seen in the past decade.