气候变化研究进展2018，Vol.14Issue(3)：247-256,10.DOI:10.12006/j.issn.1673-1719.2017.210
1961—2010年中国华南地区夏季降水结构变化分析
Changes in the structure of summertime precipitation in South China during 1961-2010
摘要
Abstract
In this paper, the changes in structure of summertime precipitation over South China (SC) were comprehensively analyzed using the concentration index (Q), based on 1961-2010 daily precipitation data collected at 64 rain gauge stations. The results indicate that the regions with smaller (larger) Q values were mostly located in the north (south) of SC, where daily precipitation events tended to become temporally dispersed (concentrated) during the study period. Variations of the Q and the total summertime rainfall amount during the period 1961-2010 in SC both exhibited an upward trend. The precipitation showed a more increase trend in north of SC than it in south of SC. However, the Q index showed a more increase trend in south of SC than it in north of SC. In SC, when the daily precipitation is greater than 1 mm, 25 mm and 50 mm, 1 d precipitation showed negative trends. In contrast, the precipitation events related to long wet spells increased. Over most parts of SC, the rainy days with precipitation amount greater than 1 mm tended to decrease whereas the wet spells with daily precipitation greater than 25 mm and 50 mm tended to increase.关键词
华南/降水集中度/持续性降水过程/持续时间Key words
South China/Precipitation concentration/Wet spells/Persistent time引用本文复制引用
李慧,周顺武,陆尔,姜有山,张运鹏..1961—2010年中国华南地区夏季降水结构变化分析[J].气候变化研究进展,2018,14(3):247-256,10.基金项目
公益性行业 (气象) 科研专项 (重大专项) (GYHY201506001-1) （气象）
国家自然科学基金项目 (41565005, 41275095) （41565005, 41275095）
