西太平洋暖池的跃变及其气候效应

赵永平; 吴爱明; 陈永利; 胡敦欣

西太平洋暖池的跃变及其气候效应

中国科学院海洋研究所山东青岛 266071

基金项目: 国家重点基础研究发展规划项目笫一部分(G1998040900);国家自然科学基金(49906003);山东省基金"西太平洋暖池变异与山东省夏季旱涝关系研究"

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出版历程
- 收稿日期: 2001-01-18
- 修回日期: 2001-06-29

THE CLIMATIC JUMP OF THE WESTERN PACIFIC WARM POOL AND ITS CLIMATIC EFFECTS

Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China

摘要

摘要: 用SST(COADS,NCEP)资料研究热带西太平洋暖池的年代际变化和跃变特征,讨论其气候效应。结果表明:西太平洋暖池有显著的10～20年周期的年代际变化和40～50年周期的气候跃变;一百多年来西太平洋暖池发生了4次大的跃变,在1910年代中期和1950年代中期,西太平洋暖池由异常发展转为异常减弱,1930年代初和1980年代初,西太平洋暖池由异常减弱转为异常发展;西太平洋暖池在1980年代初的跃变,具明显的气候效应,跃变后热带中东太平洋海温显著升高,大范围海域升温超过0.5℃,夏季西太平洋副高加强西伸,脊线偏南,我国汛期降水呈南方偏多、北方偏少的分布趋势,与跃变前基本相反。研究结果还表明:在西太平洋暖池异常发展期,El Nino事件出现多且强于La Nina事件,而在西太平洋暖池异常减弱期,La Nina事件出现多且强于El Nino事件。
- 西太平洋暖池 /
- 跃变 /
- 气候效应
Abstract: The climatic jump of the Western Pacific Warm Pool and its climatic effects were analyzed using the SST (COADS,NCEP) data sets. The results show that there were very obvious decadal variability with 10～20 periods and obvious 4 times of climatic jump of the Western Pacific Warm Pool with 40～50 year periods during one hundred years,which happened in 1910s,1930s,1950s and 1980s. The Warm pool jump has important climatic effects and after jump of the Western Pacific Warm pool,the SST increases about 0.5 ℃ in Central and Eastern Tropical Pacific; the Pacific Subtropical High at 500 hPa strengthen and gose southwestward,the precipitation belt tends to be in south China. The results also show that El Nino events will happen more than La Nina events when the Warm pool abnormally develops,and La Nina events will happen more than El Nina events when the Warm pool abnormally declines. Due to the 40～50 year period,the Warm pool is still in its strengthening stage and it is possible that the drought in north China will continue in the first decadal of 21 century.
- Western Pacific Warm pool /
- climatic jump /
- climatic effects

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参考文献(13)

[1]	叶笃正,黄荣辉.长江黄河流城旱涝规律和成因研究[M].济南:山东科学出版社,1996.237-343.
[2]	黄荣辉,傅云飞.关于ENSO循环动力学研究的若干进展与问题[A].灾害性气候过程及诊断[M].北京:气象出版社,1996.172-188.
[3]	黄荣辉,孙凤美.热带西太平洋暖池的热状况及其上空的对流活动对东亚夏季气候的影响[J].大气科学,1994,18:141-151.
[4]	WYRTKI K.Some thought about the west Pacific warm pool[A].Proceedings of the Western Pacific international meetingand workshop on TOGA-COARE[C].New Caledonia: France institute of the scientific research for the development on thecooperation, 1989.99-109.
[5]	张启龙,翁学传.热带西太平洋暖池的某些海洋学特征分析[J].海洋科学集刊,1997,38:31-38.
[6]	于淑秋,林学椿.北太平洋海温的气候跃变及其对中国汛期降水的影响[J].热带气象学报,1997,13:265-275.
[7]	符淙斌,王强.气候突变的定义和检测方法[J].大气科学,1992,16:482-493.
[8]	AI Wanxin,LIN Xuechun.Climatic abrupt change in the Northern Hemisphere for 1920s and 1950s[J].Acta Meteor Sinica,1995,9:188-198.
[9]	YAMAMOTO T,SANGA N K.An analysis of climatic Jump[J].J Met Soc Japan,1986,11:273-281.
[10]	章基嘉,葛玲.中长期天气预报基础[M].北京:气象出版社,1983.260-263.
[11]	赵永平,陈永利.一百多年来ENSO事件分类和ENSO循环研究[J].海洋湖沼通报,1998,3:7-12.
[12]	李晓燕,瞿盘茂.ENSO事件指数与指标研究[J].气象学报,2000,58:102-109.
[13]	张勤,丁一汇.热带太平洋气候态变化与ENSO循环[J].气象学报,2001,59:157-172.