期刊
GEOPHYSICAL RESEARCH LETTERS
卷 42, 期 6, 页码 1969-1976出版社
AMER GEOPHYSICAL UNION
DOI: 10.1002/2015GL063148
关键词
sulfur dioxide; OMI; emissions
资金
- NASA Earth Science Division
A new method to estimate sulfur dioxide (SO2) lifetimes and emissions from point sources using satellite measurements is described. The method is based on fitting satellite SO2 vertical column density to a three-dimensional parameterization as a function of the coordinates and wind speed. An effective lifetime (or, more accurately, decay time) and emission rate are then determined from the parameters of the fit. The method was applied to measurements from the Ozone Monitoring Instrument (OMI) processed with the new principal component analysis (PCA) algorithm in the vicinity of approximately 50 large U.S. near-point sources. The obtained results were then compared with available emission inventories. The correlation between estimated and reported emissions was about 0.91 with the estimated lifetimes between 4 and 12h. It is demonstrated that individual sources with annual SO2 emissions as low as 30ktyr(-1) can produce a statistically significant signal in OMI data.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据