地理学报 ›› 2016, Vol. 71 ›› Issue (5): 718-730.doi: 10.11821/dlxb201605002
收稿日期:
2015-12-17
修回日期:
2016-03-02
出版日期:
2016-05-25
发布日期:
2016-05-25
作者简介:
作者简介:顾西辉(1990-), 男, 河南信阳人, 博士, 主要从事非平稳性气象水文极值过程研究。E-mail:
基金资助:
Xihui GU1,2(), Qiang ZHANG1,2(
), Dongdong KONG1,2
Received:
2015-12-17
Revised:
2016-03-02
Published:
2016-05-25
Online:
2016-05-25
Supported by:
摘要:
基于中国1951-2014年728个气象站点日降水数据,利用POT抽样、变异点分析、趋势分析、分段回归等方法全面分析中国极端降水事件(量级、频率与发生时间)非平稳性特征及其对夏季温度响应。研究结果发现中国极端降水量级有明显变异特征,但无显著趋势变化,中国极端降水频率则相反。并且中国极端降水次数在全国大部分区域有显著增加趋势。另外,研究还表明变异点对中国极端降水量级和频率趋势特征有明显的改变,对极端降水发生时间趋势特征改变较弱;中国极端降水发生时间在中南部呈显著上升趋势,其他区域趋势性不显著。中国大部分区域夏季温度呈上升或显著上升趋势,且变异特征显著。在转折点前,中国大部分区域如西部干旱区东南部、东部干旱区西南部、华北区、华中区和西南区北部夏季温度呈下降或显著下降趋势;在转折点后,上述区域夏季温度转为上升或显著上升趋势。
顾西辉, 张强, 孔冬冬. 中国极端降水事件时空特征及其对夏季温度响应[J]. 地理学报, 2016, 71(5): 718-730.
Xihui GU, Qiang ZHANG, Dongdong KONG. Spatiotemporal patterns of extreme precipitation with their responses to summer temperature[J]. Acta Geographica Sinica, 2016, 71(5): 718-730.
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