利用全球降水气候学计划(Global Precipitation Climato1ogyt rlBpercdi tion.NCEP-2).结合东和美国环境预报中心再分析资料(National Centers for Environmental PTedic1on, 水-和年后亦亚季风指数、多变量经验正交函数展开分析(MV-EOF)等方法探讨了东亚季F风的李卫父化个手你记化。结果表明:东亚季风存在明显年周期变化,夏季风盛行于5-9月,在8月达到最大值,冬季风则在1月最强;东亚夏季风指数的年际变化与东亚地区夏季降雨有着密切关系。最后运用基于MV-EOF分析方法的Markov统计预报模型预报了1998年夏季降水异常,其结果与观测值较符,说明其具有较好的实用价值。
Abstract
East Asian monsoon is an important component of the Asian monsoon system.To understand itscharacteristics is crucial for improving the forecast of rain and drought in China and other Asian areas.Basedon the monthly precipitation data from the Global Precipitation Climatology Project(GPCP) and reanalysis data from the National Centers for Environmental Prediction (NCEP-2),seasonal and interannual varia1onsof the East Asian monsoon were discussed with the East Asian Monsoon Index (EAMI) and Multivariable Empirical Orthogonal Function analysis method(MV-EOF). The result shows that East Asian monsoon hasan evident annual cycle,that is,the summer monsoon prevails from May to September with its peak inAugust,while the winter monsoon reaches the maximum in January. The interannual variation of East Asian Summer Monsoon Index(EASMI)is closely related to the precipitation of the East ASian area.A staiSUcalforecast based on Markov Model to forecast the East Asian Monsoon was made and it successfully forecasted the precipitation anomaly in the summer of 1998 three months ahead of time.
关键词
东亚季风 /
季风指数 /
多变量经验正交函数展开(MV-EOF) /
Markov模型
Key words
East Asian monsoon /
monsoon index /
MV-EOF /
Markov Model
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参考文献
[1] CHENGT,CHANG C P. The structure and vorticity budget of an. early summer monsoon, trough (Mti-Yu) over southeastern. China and Japan[J]. Monthly Weather Review,1980, 108: 942-953.
[2] TAOShi-yan, CHEN Long-xun. A review of recent research on the East Asian summer monsoon in China[M]//CHANG C P, KRISHNAMUTI T N. Monsoon meteorology. Oxford: Oxford University Press, 1987: 61-92.
[3] LAU K M,YANG GJ,SHEN S H. Seasonal and intraseasonal climatology of summer monsoon rainfall over East Asia [J]. Monthly Weather Review,988,16: 18-37.
[4] WANG 4,KANG I S,LEE JY. Ensemble simulations of Asian Australian monsoon variability by 11 AGCMs[J]. Journal of Cli-mate,2004, 17(4): 803-818.
[5] MATSUMOTO J. The seasonal changes in Asian and Australian monsoon regions[J]. Journal of the Meteorological Society of Ja-pan, 1992, 70:257-273.
[6] WANG 4,LEE J Y,SHUKLAJ,et al. Advance and prospectus of seasonal prediction: Assessment of APCC/CliPAS 14-model ensemble retrospective seasonal prediction (1980-2004) [J]. Cli-mate Dynamics, 2009,3(1): 93-117.
[7] PENG Jia-yi,SUN Zhao-bo,NI Dong-hong. Relation of East A-sian summer monsoon with the equatorial eastern Pacific spring SSTA[J]. Journal of Nanjing Institute of Meteorology, 2000, 23 (3)385-390.
彭加毅,孙照渤,倪东鸿.春季赤道东太平洋海温异常与东亚夏季风的关系[J].南京气象学院学报,2000,23(3): 385390.
[8] HUANG Gang,YAN Zhong-wei. The East Asian summer mon-soon circulation anomaly index and its in.teran.nual variations[J]. Chinese Science Bulletin,1999,44(14): 1 325-1 329.
[9] YAO Yong-hong,QIAN Yong-fu. A study on the South China Sea monsoon index and the relationship between the index and re-gional rainfalls of China[J]. Journal of Nanjing University: Natu-ral Science,2001,37(6):781-788.
姚永红,钱永甫.用湿位涡定义的南海西南季风指数及其与我国区域降水的关系研究[J].南京大学学报:自然科学版,200137 (6)781-788.
[10] ZHANG Xiu-zhi,LI Jiang-long,YAN Jun-Yue,et al A study of circulation characteristics and index of the South China Sea summer monsoon [J]. Climatic and Environmental Research,2002,7(3):321-331.
张秀芝,李江龙,闫俊岳,等.南海夏季风爆发的环流特征及指标研究[J].气候与环境研究,7(3):321-331.
[11] ZHU Cong-wen,HE Jin-hai,WU Guo-xiong. East Asian mon-soon index and its in.ter-an.nual relationship with large-scale ther-mal dynamic circulation.[J]. Acta Meteorologica Sincia, 2000, 58 (4)391-402.
祝从文,何金海,吴国雄.东亚季风指数及其与大尺度热力环流年际变化关系[J].气象学报,2000,58(4):391-402.
[12] WANG 4. The vertical structure and development of the ENSO anomaly mode during 1979-1989 [J]. Journal of Atmospheric Sciences, 1992,49(8): 689-712.
[13] ADLER R F,HUFFMAN GJ,CHANG A,et al. The version 2 Global Precipitation Climatology Project(GPCP) monthly pre-cipitation analysis (1979-Present) [J]. Journal of Hydrometeor, 2003,: 147-1 167.
[14] KANAMISTU M,E4ISUZAKI W,WOOLLEN J,et al NCEP-DOE AMIP-II reanalysis (R-2)[J]. Bulletin of the Amer-ican Meteorological Society,2002,3(11): 1 631-1 643.
[15] HUANG Rong-hui,XU Yu-hong,WANG Peng-fei,et al. The feature of the catastrophic flood over the Changjiang River basin during the summer of 1998 and cause exploration [J]. Climatic and Environmental Research, 1998,3(4): 300-313.
黄荣辉,徐予红,王鹏飞,等.1998年夏长江流域洪涝特征及其成因探讨[J].气候与环境研究,1998,3(4):300-313.
[16] NORTH G R, 4ELL T L, CAHALAN R F,et al. Sampling er-rors in the estimation of empirical orthogonal function [J]. Monthly Weather Review,1982,110(7): 688-706.
[17] LIU Jian,WANG Bin,YANG Jing. Forced and internal modes of variability of the East Asian summer monsoon.[J]. Climate of the Past,2008(4):225-233.
[18] XUE Yan,CANE M A,ZE4IAK S E,et al On the prediction of ENSO: A study with a low-order Markov Model[J]. Tellus, 1994,46A:512-528.
[19] JOHNSON SD,BATTIST DS,SARACHIK ES. Empirically derived Markov models and prediction, of tropical Pacific sea sur-face temperature an.omalies[J]. Journal of Climate,2000,13(1): 13-17.
[20] CHEN Da-ke,WU Xiao-jun. A Markov model for seasonal fore-cast of Antarctic sea ice[J]. Journal of Climate, 2004, 17 (16): 3 156-3 168.
[21] XUE Yan,LEETMAA A,JI M. ENSO prediction with Markov models: The impact of sea level[J]. Journal of Climate,2000,13 (4)849-871.
基金
国家自然科学基金资助项目(40976018)
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