Climate Change Research ›› 2018, Vol. 14 ›› Issue (3): 247-256.doi: 10.12006/j.issn.1673-1719.2017.210

• Changes in Climate System • Previous Articles     Next Articles

Changes in the structure of summertime precipitation in South China during 1961-2010

Hui LI1,2,Shun-Wu ZHOU1(),Er LU1,You-Shan JIANG3,Yun-Peng ZHANG4   

  1. 1 Key Laboratory of Meteorological Disaster, Ministry of Education (KLME), Joint International Research Laboratory of Climate and Environment Change (ILCEC), Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters (CIC-FEMD), Nanjing University of Information Science & Technology, Nanjing 210044, China
    2 China Meteorological News Press, Beijing 100081, China
    3 Nanjing Meteorological Bureau, Nanjing 210009, China
    4 National Satellite Meteorological Center, China Meteorological Administration, Beijing 100081,China
  • Received:2017-10-11 Revised:2017-10-31 Online:2018-05-31 Published:2018-06-07


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.

Key words: South China, Precipitation concentration, Wet spells, Persistent time

Copyright © Climate Change Research, All Rights Reserved.
Tel: (010)58995171 E-mail:
Powered by Beijing Magtech Co. Ltd