中国东部夏季三个雨带降水的年代际变化及其与中高纬环流和海温的关系

覃军; 王盘兴

中国东部夏季三个雨带降水的年代际变化及其与中高纬环流和海温的关系

覃军,
王盘兴

南京信息工程大学大气科学系, 江苏, 南京, 210044

基金项目: 国家自然科学基金重点课题"江淮梅雨的年际和年代际变化规律及其机制研究"(40233037)资助

计量
- 文章访问数: 1091
- HTML全文浏览量: 0
- PDF下载量: 725
- 被引次数: 0
出版历程
- 收稿日期: 2003-11-14
- 修回日期: 2004-02-18

INTERDECADAL VARIATIONS OF MONSOON RAINBANDS OVER CHINA AND THEIR RELATIONSHIPS WITH OCEAN-ATMOSPHERIC SYSTEMS IN MED-HIGH LATITUDES

Department of Atmospheric Sciences, Nanjing University of Information Science & Technology, Nanjing 210044, China

摘要

摘要: 分析了华南、长江流域和华北夏季风三雨带降水的年代际变化特征及其与海气系统的关系。结果表明,三雨带的开始日、结束日都有明显的年代际变化特征,主要表现为自1990年代至今,三雨带开始日推迟,华北雨带终止日明显提前。夏季风的进程与两极涛动密切相关,也与局地海陆热力差异有关:长江流域降水对应于欧亚大陆的位势高度正异常,而华南和华北降水都对应于欧亚大陆的位势高度负异常。华南、华北降水与北太平洋中纬度SST年代际变率密切相关,而长江流域降水与北大西洋中高纬度和西太平洋暖池SST的年代际变率有关。这说明年代际时间尺度上,夏季风进程的不同阶段对应着显著的环流和海温差别,中高纬的环流和海温对夏季风降水有重要的影响。
- 夏季风雨带 /
- 降水 /
- 年代际变化 /
- 中高纬环流和海温
Abstract: The interdecadal variations of the three Monsoon rainbands(South China,Yangtze River Valley,North China) and their relationships with the variations in global ocean-atmospheric systems are analyzed. The results show that,there are obvious trends in the initial (final dates) identified in three rainbands, especially in NC and YRV. The initial dates are delayed and finial dates advanced since 1990's. The advance of rainbands are closely related with circulation systems in mid-high latitudes (AO,AAO) and geopotential height anomaly in the Eurasia continent. In decadal time-scales,SST in mid-high latitudes plays a very importment role in the course of monsoon rainfall. Rainfall in South China and North China is closely associated with decadal SST variability in mid-latitudes of North Pacific, while rainfall in Yangtze River Valley with that of in mid-high latitudes of North Altantic.
- monsoon rainbands /
- rainfall /
- interdecadal variations /
- circulation systems and SST in mid-high latitudes

HTML全文

参考文献(19)

[1]	王绍武,龚道益,叶瑾琳,等.1880年以来中国东部四季降水量序列及其变率[J].地理学报,2000,55(3):282-293.
[2]	陈隆勋.中国近45年来气候变化的研究[J] ,气象学报,1998,56(3):257-271.
[3]	李崇银,李桂龙,龙振夏.中国气候年代际变化的大气环流形势对比分析[J].应用气象学报,1999,10(增刊):1-8.
[4]	LI Chongyin.The quasi-decadal oscillation of air-sea system in the Northwestern Pacific region[J].Adv Atmos Sci,1998,15(1):31-34.
[5]	李崇银,朱锦红,孙照渤.年代际气候变化研究[J].气候与环境研究,2002,7(2):209-219.
[6]	李峰,何金海.北太平洋海温异常与东亚夏季风相互作用的年代际变化[J].热带气象学报,2000,16(3):260-271.
[7]	HUANG Ronghui.Decadal variability ofthe summer monsoon rainfall in East Asia and its association withthe SST anomalies in the tropical Pacific.CLIVAR Exchange,2001,2(1):7-8.
[8]	丁裕国,江志红.气象数据时间序列信号处理[M].北京:气象出版社,1998.32-41.
[9]	McKee T B,DOESKEN N J,KLEIST J.Drought monitoring with multiple time scales.Preprints,9th Conference on Applied Climatology[N ]. 1995,15- 20 January, Dallas, TX, 233- 236.
[10]	ARTHUR N Samel, WANG Wei- Chyung, LIANG Xin- Zhong. The monsoon rainband over China and relationships with the eurasian circulation[J]. J Clim, 1999, 12(1 ): 115-131.
[11]	曾庆存,李建平.南北两半球大气的相互作用和季风的本质[J].大气科学,2002,6(4):433-448.
[12]	WALLACE J M, GUTZLER D S. Teleconnections in the geopotential height field during Northern Hemisphere winter[J].Mon Wea Rev, 1981, 109(7): 784-812.
[13]	NITTA Ts, HU Zengzhen. Summer climate variability in China and its association with 500hPa height and tropical convection [J]. J Meteor Soc Japan, 1996, 74(4): 725-745.
[14]	严华生,陈艳,郭世昌,等.中国春末5月区域降水和北半球500hPa高度场典型相关分析[J].热带气象学报,2003,19(3):234-242.
[15]	张庆云.1880年以来华北降水及资源的变化[J].高原气象,1999,18(4):486-495.
[16]	龚道溢,朱锦红,王绍武.长江流域夏季降水与前期北极涛动的显著相关[J].科学通报,2002,47(3):546-549.
[17]	YANG Song, LAU K-M. Influences of Sea Surface Temperature and Ground Wetness on Asia Summer Monsoon[J]. J Clim, 1998, 11(12): 3230-3246.
[18]	ZHANG Y, WALLACE J M, BATTISTI D S. ENSO-like interdecadal variability[J]. 1900-93, J Clim, 1997, 10(8): 1004- 1020.
[19]	陈绍东,王谦谦,钱永甫.江南汛期降水基本气候特征及其与海温异常关系初探[J].热带气象学报,2003,19(3):260-268.