A counterexample of aerosol suppressing light rain in Southwest China during 1951-2011

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• 作者：Jian Wu ; Caiyun Ling ; Deming Zhao and Bin Zhao
• 刊名：Atmospheric Science Letters
• 出版年：2016
• 出版时间：September 2016
• 年：2016
• 卷：17
• 期：9
• 页码：487-491
• 全文大小：1522K
• ISSN：1530-261X

文摘

Surface meteorological observation data and aerosol optical depth (AOD) data from 1951–2011 were analyzed for Tengchong city, which is a clean city in Southwest China. A significant reduction of light rain, accompanied by an increase of visibility and a decrease of AOD, was observed. Thus, the observed light rain reduction in Tengchong was not associated with an increase of aerosols. The main cause of the reduction in light rain was the decrease of relative humidity in the layer between 850 to 500 hPa, which was induced mainly by the increase of temperature. This counterexample indicates that there are some evidences on the short-term scale, but the depression of light rain by aerosols on the long-term scale remains controversial.