Light rain events change over North America, Europe, and Asia for 1973-2009
Light rain events change over North America, Europe, and Asia for 1973-2009
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DOI：
10.1002/asl.298
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发表时间：
2010-10-01
影响因子：
3
通讯作者：
Leung, Ruby
中科院分区：
文献类型：
--
作者：
Qian, Yun;Gong, Daoyi;Leung, Ruby
对日降水量数据的分析揭示了北美（NA）、欧洲（EU）和亚洲（AS）小雨事件的不同长期趋势，但总体上从1973-2009年发现了减少的趋势，特别是在东亚，观察到了从小雨到大雨事件的显著转变。虽然有人认为，全球变暖可能会导致从小雨到大雨的转变，区域小雨趋势和温度/可降水量（PW）的趋势之间的对应关系很少。这就需要包括其他因素，如影响区域降雨率和云过程的大气环流和气溶胶变化。版权所有（C）2010皇家气象学会
Analysis of daily precipitation data reveals diverse long-term trends of light rain events in North America (NA), Europe (EU), and Asia (AS), but overall a decreasing trend is found from 1973-2009, especially over East Asia, where a remarkable shift from light to heavy rain events has been observed. Although it has been argued that global warming may lead to a shift from light to heavy rain, regionally little correspondence is found between light rain trends and temperature/precipitable water (PW) trends. This argues for the need to include other factors such as atmospheric circulation and aerosol changes that affect regional rain rates and cloud processes. Copyright (C) 2010 Royal Meteorological Society