JOURNAL OF YANGTZE RIVER SCIENTIFIC RESEARCH INSTI ›› 2017, Vol. 34 ›› Issue (1): 24-29.DOI: 10.11988/ckyyb.20150809

• WATER RESOURCES AND ENVIRONMENT • Previous Articles     Next Articles

Trends of Extreme Climate in South Jiangxi from 1956 to 2013

WU Dan-rui1,2, WU An-qi3, HE Xin-yue3, LI Ming1,2   

  1. 1.Key Laboratory of Poyang Lake Wetland and Watershed Research of Ministry of Education, Jiangxi Normal University, Nanchang 330000, China;
    2.College of Resources and Environment, Northwest A&F University, Yangling 712100, China;
    3.College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China
  • Received:2015-09-22 Online:2017-01-01 Published:2017-01-13

Abstract: Extreme weather events have huge impact on human and the environment. In this article, Mann-Kendall test and linear trend method were adopted to examine the trend of eight indicators according to temperature and precipitation data in south Jiangxi Province from 1956 to 2013. The indicators include average value of daily maximum temperature difference (MxT), average value of daily minimum temperature (MnT), average value of daily temperature difference (△T), total precipitation (P), annual maximum 1-day rainfall (AM1R), annual maximum 3-day rainfall (AM3R), annual maximum 5-day rainfall (AM5R), and annual maximum 7-day rainfall (AM7R). Results showed that 1) there was no significant change in annual precipitation index, but the seasonal variations were obvious; 2) temperature indicators showed the same trend both in year scale and in season scale, and in almost all the sites MxT and MnT showed significant upward trend, in particular, MnT in autumn had the largest increase of 0.39 ℃ per decade. △T decreased except in spring; 3) extreme precipitation events showed an upward trend, and AM1R and AM3R increased significantly, especially in winter. The research results suggest that the temperature trend in Southern Jiangxi is in accordance with global warming trend, and extreme precipitation events are intensifying.

Key words: climate change, extreme climate, Ganjiang River Basin, maximum annual temperature, maximum annual daily rainfall

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