气象学报Issue(3)：596-605,10.DOI:10.11676/qxxb2014.033
空气污染抑制小雨：华南与青藏高原对比分析
摘要
Abstract
Precipitation and visibility (surrogate for aerosol loading)records at the 10 weather stations in the Tibetan Plateau and South China were examined with the span of 32 years (1980-2011).It was shown that the values of visibility were high in the Tibetan Plateau and low in South China.The light rainfall decreased at the 3 stations in South China (Nanning,Beihai and Baise)while the other 7 stations (2 in South China and 5 in the Tibetan Plateau)showed little fluctuation.A significant posi-tive correlation was observed between the visibility at 20:00 BT and the light rainfall during the following 24 hours in the sta-tions Nanning,Beihai and Baise with the other 7 stations having no significant correlation,which might suggest that the de-crease trends of the light rainfall were caused by air pollution suppressing precipitation.The quantitative analysis showed that for each reduction of 1 kilometer of the visibility at 20:00 BT,the light rainfall of the following 24 hours would decrease by 0.019,0.028 and 0.027 mm in the stations Nanning,Beihai and Baise,respectively.The correlation coefficients were signifi-cantly positive between the visibility at 20:00 BT and the normalization convective available potential energy (NCAPE )of the fol-lowing 24 hours,which was consistent with the phenomenon of air pollution suppressing light rainfall.It was also observed that the response of NCAPE to the invigoration effect of visibility/aerosol had 2 peaks for each day.关键词
小雨/抑制/能见度/激励效应/归一化对流有效位能Key words
Light precipitation/Suppress/Visibility/Invigoration effect/Normalization convective available potential energy分类
天文与地球科学引用本文复制引用
李雄,苏志..空气污染抑制小雨：华南与青藏高原对比分析[J].气象学报,2014,(3):596-605,10.基金项目
资助课题广西自然科学基金项目（2010GXNSFA013007）。 （）
