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100			_aZhang, Shuang _950994
245			_aCharacteristics and reasons for light rain reduction in Southwest China in recent decades /
260			_bSage, _c2019.
300			_aVolume: 43 issue: 5, page(s): 643-665
520			_aAlthough light rain events have a small intensity and amount, light rain also exerts a significant influence on the environment and climate, and observations have revealed a significant reduction in light rain in many regions around the globe. The specific reasons for light rain reduction have not been clearly revealed. Some studies attribute the reduction in light rain to an increase in aerosol, while other studies tend to associate it with global warming. Therefore, further studies should be conducted to increase knowledge regarding the reasons for the decrease in light rain. Light rain events were analyzed using daily precipitation data collected from 67 gauge stations across Southwest China from 1960 to 2010. The results show that both the amount of light rain and the number of light rain days have decreased during the last 50 years at different magnitudes (0–2 mm, 2–5 mm, and 5–10 mm), in which the light rain amount and number of light rain days for 0–2 mm of rainfall present the largest regionally averaged decreasing rates of –0.20 mm/a and –0.73 days/a from 1960 to 2010, respectively. Furthermore, the maximum (minimum) light rain amount and number of light rain days appear in summer (winter). In addition, an increasing trend in the light rain amount in discrete events and a decreasing trend in the light rain amount in consecutive events are simultaneously revealed, in which the reduction in the frequency of consecutive light rain events is more significant than that of discrete light rain events. The reduction in light rain in the eastern part of Southwest China from 1979 to 2010 is mainly caused by a combination of water vapor reduction and warming. Moreover, the influence of aerosols on the observed reduction in light rain is not statistically significant at the inter-annual scale. The results provide some main correlation factors for predicting the long-term changes of light rain in China and even the global region.
650			_aLight rain, _950995
650			_awarming, _950996
650			_arelative humidity, _950997
650			_a precipitable water vapor, _950998
650			_aaerosols _950679
700			_aWu, Jian _950999
700			_aZhao, Deming _951000
700			_aXia, Lan _951001
773	0		_012665 _916502 _dLondon: Sage Publication Ltd, 2019. _tProgress in Physical Geography: Earth and Environment/ _x03091333
856			_uhttps://doi.org/10.1177/0309133319861828
942			_2ddc _cART
999			_c12708 _d12708