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Spatiotemporal characteristics of extreme precipitation and temperature: a case study in Yunnan Province, China

机译:极端降水和温度的时空特征:以云南为例

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Spatiotemporal characteristics of extreme precipitation and temperature in Yunnan Province, China, were analyzed by using observed daily data at 28 meteorological stations from 1958-2013 in this study. Nine extreme precipitation indices and 6 extreme temperature indices were adopted, and the tendency of those indices was investigated by using Mann-Kendal test method. In order to distinguish the spatial characteristics, the region was divided into 5 regions according to climate and topography, then the characteristics of each region were compared each other. The results indicate that changes of extreme temperature are more sensitive and significant than those of precipitation. The contribution of extreme precipitation to total precipitation presented a significant upward trend, but the annual total wet-day precipitation (PRCPTOT) did not show significant changes. Both maximum and minimum temperature showed significant increasing tendency while there was not obvious changes for precipitation. The spatial features of extreme precipitation and temperature are similar. It was noted that extreme precipitation and temperature events occurred more frequently in central region where the risk of extreme climatic events was greater than other areas.
机译:本研究利用1958-2013年间28个气象台站的每日观测数据,分析了中国云南省的极端降水和温度的时空特征。采用了9个极端降水指数和6个极端温度指数,并采用Mann-Kendal检验方法研究了这些指数的趋势。为了区分空间特征,根据气候和地形将区域分为5个区域,然后将每个区域的特征进行比较。结果表明,极端温度变化比降水变化更为敏感和显着。极端降水对总降水的贡献呈现出明显的上升趋势,但年度总湿日降水量(PRCPTOT)没有显示出显着变化。最高和最低温度都显示出明显的增加趋势,而降水没有明显变化。极端降水和温度的空间特征相似。有人指出,极端降水和温度事件在中部地区发生得更多,在中部地区,极端气候事件的风险大于其他地区。

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