| 中国东南沿海大雨、暴雨时空变化特征 |
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| 引用本文： | 张平,延军平,唐宝琪,李英杰,王文静.中国东南沿海大雨、暴雨时空变化特征[J].中国农业大学学报,2018,23(1):44-53. |
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| 作者姓名： | 张平 延军平 唐宝琪 李英杰 王文静 |
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| 作者单位： | 陕西师范大学地理科学与旅游学院; |
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| 基金项目： | 西部重大灾害时空规律的统计研究（14AZD094）；西北重大灾害时空统计规律与防灾对策研究（15JD790022） |
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| 摘 要： | 基于东南沿海93个气象站点1960—2014年逐日降水资料,运用Morlet小波分析、IDW(Inverse Distance Weighted)空间插值等方法,分析近55年来东南沿海地区强降水时空变化特征。研究表明:1)近55年来东南沿海年降水量整体呈缓慢增加趋势,其中夏春两季降水量最多,且大雨、暴雨为该地区主要降水类型,而年降水日数呈现明显的下降趋势。2)大雨降水量、暴雨降水量与大雨日数、暴雨日数在时间变化上具有明显的一致性,即降水量随降水日数的增多而增多。3)大雨降水量与大雨强度,暴雨降水量与暴雨强度在空间变化上都呈现出自南向北递减的变化规律。大雨降水量与大雨日数,暴雨降水量与暴雨日数在空间分布上大体一致,其中海南省、广西壮族自治区、广东省南部沿海地区大雨降水量、暴雨降水量较多,且大雨强度、暴雨强度较大。4)大雨降水量在空间变化上以正值变化为主,且以福建省与浙江省交界处自南向北递减,而暴雨强度变化率与暴雨降水量变化率在空间分布上具有明显的一致性。
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| 关 键 词： | 雨 降水日数 降水强度 东南沿海 |
| 收稿时间： | 2017/3/2 0:00:00 |
Temparal and spatial variation of precipitation events in Southeast Coast of China |
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| ZHANG Ping,YAN Junping,TANG Baoqi,LI Yingjie and WANG Wenjing.Temparal and spatial variation of precipitation events in Southeast Coast of China[J].Journal of China Agricultural University,2018,23(1):44-53. |
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| Authors: | ZHANG Ping YAN Junping TANG Baoqi LI Yingjie and WANG Wenjing |
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| Institution: | School of Geography and Tourism, Shaanxi Normal University, Xi''an 710119, China,School of Geography and Tourism, Shaanxi Normal University, Xi''an 710119, China,School of Geography and Tourism, Shaanxi Normal University, Xi''an 710119, China,School of Geography and Tourism, Shaanxi Normal University, Xi''an 710119, China and School of Geography and Tourism, Shaanxi Normal University, Xi''an 710119, China |
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| Abstract: | Based on the meteorological data of 93 stations in Southeast Coast of China from 1960 to 2014, the temporal and spatial variation of precipitation in southeast coast was analyzed by using Morlet wavelet analysis and IDW spatial interpolation method. The results showed that:1) Over the past 55 years, the precipitation showed slowly increasing trend in Southeast coast. But the number of rain days declined. The precipitation in spring and summer was the most. 2) The precipitation and days of heavy rainfall and extreme rainfall were unanimous in the temporal variation. With the increasing of heavy rainfall and extreme rainfall, the day of heavy rainfall and extreme rainfall was increasing. 3) The spatial variations of the precipitation and intensity of heavy rainfall and extreme rainfall were diminishing from south to north. The precipitation and day of heavy rainfall and extreme rainfall were unanimous in the distribution of space. There was more precipitation and days of heavy rainfall and extreme rainfall on the Southern coastal areas of Hainan, Guangxi, Guangdong Provinces. 4) The change of precipitation in heavy rainfalls was positive in the spatial distribution. It decreased from south to north at the junction of Fujian and Zhejiang Province. The change rate of precipitation and intensity of extreme rainfalls showed significant consistency in the distribution of space. |
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| Keywords: | rainfall precipitation days precipitation intensity Southeast Coast of China |
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