首页 | 本学科首页   官方微博 | 高级检索  
     检索      

四川盆地近40年来的降水特征分析
引用本文:邵远坤,沈桐立,游泳,康岚.四川盆地近40年来的降水特征分析[J].西南农业大学学报,2005,27(6):749-752.
作者姓名:邵远坤  沈桐立  游泳  康岚
作者单位:[1]南京信息工程大学大气科学系,江苏南京210044 [2]四川省气象局,四川成都610072
基金项目:国家自然科学基金项目资助课题(40075023)
摘    要:对四川盆地22个站点1958—2000年43a来的降水特征的分析表明:盆地内降水的相对变率比较小,降水相对比较稳定,但是盆地内的降水有较强的分布不均匀性,盆地西部近40a来降水的长期变化有明显减少的趋势。盆地内降水异常的1个显著特征就是盆地西部与东部的反位相分布,盆地内暴雨发生频率在时空分布上都有相似的特征。

关 键 词:降水特征  相对变率  降水异常  反位相  暴雨发生频率
文章编号:1000-2642(2005)06-0749-04
收稿时间:2005-09-16
修稿时间:2005-09-16

PRECIPITATION FEATURES OF SICHUAN BASIN IN THE RECENT 40 DECADES
SHAO Yuan - kun, SHEN Tong - li , YOU Yong, KANG Lan.PRECIPITATION FEATURES OF SICHUAN BASIN IN THE RECENT 40 DECADES[J].Journal of Southwest Agricultural University,2005,27(6):749-752.
Authors:SHAO Yuan - kun  SHEN Tong - li  YOU Yong  KANG Lan
Institution:1. Department of Atmospheric Science, Nangjing Institute of Meteorology, Nanjing, Jiangsu 210044, China; 2. Meteorological Bureau of Sichuan Province, Chengdu, Sichuan 610072, China
Abstract:Based on the data of 22 observational points and meteorological stations in Sichuan from 1958 to 2000, the characteristic features of precipitation in the Basin is analyzed. The results show that precipitation in Sichuan Basin is relatively stable with little annual variability. However, annual precipitation is unevenly distributed. A long - tern trend of precipitation in the recent 40 decades is manifested in decreasing rainfall in the western part of the Basin. The rainfall anomaly in the Basin is characterized by an anti - phased distribution between its eastern and western parts. The frequency of rainstorms is similar all over the Basin in their spatial and temporal distribution.
Keywords:precipitation feature  variability  precipitation anomaly  anti - phased  rainstorm frequency
本文献已被 CNKI 维普 等数据库收录!
点击此处可从《西南农业大学学报》浏览原始摘要信息
点击此处可从《西南农业大学学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号