Estimates of North African Methane Emissions from 2010 to 2017 Using GOSAT Observations,Environmental Science & Technology Letters

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Estimates of North African Methane Emissions from 2010 to 2017 Using GOSAT Observations
Environmental Science & Technology Letters ( IF 8.9 ) Pub Date : 2021-07-06 , DOI: 10.1021/acs.estlett.1c00327
Luke M. Western ₁ , Alice E. Ramsden ₂ , Anita L. Ganesan ₂ , Hartmut Boesch _{3,

4} , Robert J. Parker _{3,

4} , Tia R. Scarpelli ₅ , Rachel L. Tunnicliffe ₁ , Matthew Rigby ₁

Affiliation

Source characteristics of methane emissions in Africa are not well understood, despite methane’s role as the second largest anthropogenic contributor to climate change. Here, we present monthly methane emission estimates from Algeria, Egypt, Libya, Morocco, and Tunisia between 2010 and 2017, a region dominated by anthropogenic emissions. Emissions are estimated using observations from the GOSAT satellite and a Markov chain Monte Carlo inverse algorithm. Our top-down North African methane emissions are generally in line with inventory estimates and national reporting to the United Nations Framework Convention on Climate Change (UNFCCC). An exception is that summertime emissions from the Nile Delta region are considerably higher than those predicted by inventory estimates, possibly due to agricultural practices and the influence of the Nile.

中文翻译：

使用 GOSAT 观测数据估算 2010 年至 2017 年北非甲烷排放量

尽管甲烷是造成气候变化的第二大人为因素，但对非洲甲烷排放的来源特征尚不清楚。在这里，我们展示了 2010 年至 2017 年阿尔及利亚、埃及、利比亚、摩洛哥和突尼斯的月度甲烷排放估计值，该地区以人为排放为主。使用来自 GOSAT 卫星的观测和马尔可夫链蒙特卡罗逆算法估计排放量。我们自上而下的北非甲烷排放量总体上符合清单估算和向联合国气候变化框架公约 (UNFCCC) 提交的国家报告。一个例外是尼罗河三角洲地区的夏季排放量远高于清单估计的预测值，这可能是由于农业实践和尼罗河的影响。

更新日期：2021-08-10

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