中山大学学报（自然科学版）Issue(5)：138-146,9.DOI:10.13471/j.cnki.acta.snus.2015.05.025
广东省降水非均匀性与气候变化的响应关系
Response Relation between Precipitation Heterogeneity and Climate Change in Guangdong
摘要
Abstract
The spatial and temporal inhomogeneity of precipitation is the main cause of drought and flood disasters.Analyzing the spatial and temporal homogeneity of precipitation can provide scientific basis for the flood control and drought relief work.Based on observed precipitation data during 1960 -2013 in Guangdong Province,the precipitation concentration degree (PCD)and precipitation concentration peri-od (PCP)were computed and the temporal and spatial variations of precipitation in Guangdong in re-sponse to climate change were analyzed for exploring the response relation between the homogeneity of precipitation and abrupt change of temperature.Results showed that:① The climate in Guangdong was warm and wet during 1960 -2013,but became cold and dry gradually after the temperature abrupt change.② The seasonal precipitation had a good response relationship with the PCD and the PCP.③The precipitation was relatively homogeneous but with large varied amplitude,and the PCP arrived earli-er.After the abrupt change of temperature,precipitation became more concentrated and concentration pe-riod delayed but precipitation tended to be decentralized and concentration period was ahead of time,and the volatility of the PCD and PCP tended to weaken.④ There were some correlations among air tempera-ture,precipitation,the PCD and the PCP in Guangdong,which was different with northern China.⑤After the abrupt change of temperature,precipitation of most areas became more concentrated and con-centration period arrived earlier,and all maintained a certain latitudinal variation.This indicated that precipitation uniformity of space -time in Guangdong has a certain response relationship with climate change.关键词
气候变化/降水集中度/集中期/广东省Key words
climate change/precipitation concentration degree/precipitation concentration period/Guangdong province分类
天文与地球科学引用本文复制引用
刘永林,延军平,岑敏仪..广东省降水非均匀性与气候变化的响应关系[J].中山大学学报（自然科学版）,2015,(5):138-146,9.基金项目
国家自然科学基金资助项目（41171090）；国家社会科学基金重点资助项目 （）
