| 1960—2008年淮河流域极端降水演变特征 |
| |
| 引用本文： | 陆志刚,张旭晖,霍金兰,王珂清,谢小萍.1960—2008年淮河流域极端降水演变特征[J].气象科学,2012,32(S1):74-80. |
| |
| 作者姓名： | 陆志刚 张旭晖 霍金兰 王珂清 谢小萍 |
| |
| 作者单位： | 海安县气象局, 江苏 南通 226600;江苏省气象台, 南京 210008;盐都区气象局, 江苏 盐城 224005;江苏省气象科学研究所, 南京 210008;江苏省气象台, 南京 210008 |
| |
| 基金项目： | 淮河流域气象开放研究基金项目(HRM200806) |
| |
| 摘 要： | 采用地理空间统计、时间序列分析和趋势诊断等方法,研究1960—2008年淮河流域极端降水时空演变特征:流域大部分地区全年及四季的极端强降水量、降水强度、强降雨日数无明显变化趋势;≥15 d的持续无降水事件发生次数由南向北递增,平均每年2~5次,冬季最多、夏季最少;≥5 d的持续降水事件由东北向西南递增,平均每年1~8次,潢川—正阳—郑州一线的西北部秋季最多,其他地区夏季最多;40%的站点持续无降水事件有明显增多趋势,气候倾向率为0.22~0.60次/a,且大多在1970s发生气候突变;30%的站点持续降水事件有明显减少趋势,气候倾向率为-0.24~-0.70次/a,普遍无气候突变;持续无降水(降水)事件与年降水总量没有明显的联系。
|
| 关 键 词： | 极端降水 持续无降水 持续降水 |
The evolution characteristics of the extreme precipitation in Huaihe river basin during 1960-2008 |
| |
| LU Zhigang,ZHANG Xuhui,HUO Jinlan,WANG Keqing and XIE Xiaoping.The evolution characteristics of the extreme precipitation in Huaihe river basin during 1960-2008[J].Scientia Meteorologica Sinica,2012,32(S1):74-80. |
| |
| Authors: | LU Zhigang ZHANG Xuhui HUO Jinlan WANG Keqing and XIE Xiaoping |
| |
| Institution: | Haian Meteorological Bureau, Jiangsu Nantong 226600, China;Jiangsu Meteorological Observatory, Nanjing 210008, China;Yandu Meteorological Bureau, Jiangsu Yancheng 224005, China;Jiangsu Meteorological Institute, Nanjing 210008, China;Jiangsu Meteorological Observatory, Nanjing 210008, China |
| |
| Abstract: | This paper studied the temporal and spatial variations of extreme precipitation in Huaihe river basin from 1960 to 2008 with the geo-spatial statistics, time series analysis and trends in diagnosis and other methods. The results showed that the extreme precipitation,precipitation intensity and the days of heavy rainfall had not significantly changed in annual and seasonal trend. The incidents without precipitation lasting over 15 d were increasing from south to north about 2-5 times per year, it happened the most in winter and the least in summer. The events with precipitation lasting over 5 d were increasing from northeast to southwest about 1-8 times per year. In the northwest of Huangchuan-Zhengyang-Zhengzhou this kind of events were the most in the fall, in other areas the events were the least in summer. In the more than 40% of sites the chance with no persistant precipitation had increased significantly. The climate trend rate was 0.22-0.60 times/a. It occurred the most in the 1970s during abruptly climatic change. The events of precipitation reduced obviously over 30% of the sites. The climate trend rate was -0.24 to -0.70 times/a, no abruptly climatic change was found. There were no obvious relationship between persistant (no) precipitation events and the annual precipitation. |
| |
| Keywords: | Extreme precipitation Persistent no precipitation Persistent precipitation |
|
| 点击此处可从《气象科学》浏览原始摘要信息 |
| 点击此处可从《气象科学》下载免费的PDF全文 |
|
