Impact of the North and South SSTA in North Pacific on Rainfall Patterns of Flood Season in China

Yang Suyu; Yan Huasheng

Vol.18, NO.2, 2007

Article Contents

Article Navigation > Journal of Applied Meteorological Science > 2007 > 18(2): 193-201

Yang Suyu, Yan Huasheng. Impact of the north and south SSTA in North Pacific on rainfall patterns of flood season in China. J Appl Meteor Sci, 2007, 18(2): 193-201.

Citation:

Yang Suyu, Yan Huasheng. Impact of the north and south SSTA in North Pacific on rainfall patterns of flood season in China. J Appl Meteor Sci, 2007, 18(2): 193-201.

Yang Suyu, Yan Huasheng. Impact of the north and south SSTA in North Pacific on rainfall patterns of flood season in China. J Appl Meteor Sci, 2007, 18(2): 193-201.

Citation:

Yang Suyu, Yan Huasheng. Impact of the north and south SSTA in North Pacific on rainfall patterns of flood season in China. J Appl Meteor Sci, 2007, 18(2): 193-201.

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Impact of the North and South SSTA in North Pacific on Rainfall Patterns of Flood Season in China

Yang Suyu¹,
Yan Huasheng²

1.
Meteorological Observatory of Yunnan Province, Kunming 650034
2.
Department of Atmospheric Science, Yunnan University, Kunming 650091

Received Date: 2005-11-21
Rev Recd Date: 2006-10-10
Publish Date: 2007-04-30

Abstract

Abstract

Based on the data of monthly mean SST of the North Pacific Ocean by National Climate Center during 1951—2002, the analytical methods of composite analysis and multi variable factors variance and also the method of correlation analysis for the relationship of the summer east China rainfall patterns and the SSTA of south and north in North Pacific Ocean are applied. It is found that the rainfall patterns have a close relation to the SSTA of North Pacific Ocean during the previous period from January to May. Though the distribution of rainfall patterns in rainy season is connected with different previous SSTA composite fields, there are only some key areas in the north and the south that can pass the significant test level in previous period, especially in preceding January. The key areas in north and south which have close negative correlation lie on the neighborhood of the extratropical Oyashio (40°—50°N, 160°E—180°), the West Wind Drift field (30°—40°N, 175°—145°W) and the middle part of The North Pacific Ocean in equator (10°S—0°, 175°—145°W) respectively. When the SST of key areas are regarded as the discrimination factors, the discrimination analysis of rainfall pattern shows that the discrimination accuracy of discriminating equation set up by regarding more key areas as discrimination factors is higher than the discriminating equation set up by regarding only one key area or the SST index defined by regarding the composite of some SST areas as discrimination factors. Those are the summer east China rainfall patterns which have a close connection with the synthetic effect of more SST areas. Further research on the correlation coefficients between eigenvalues of summer 500 hPa western Pacific subtropical high and the geopotential height of 500 hPa in the preceding January. and the SST index defined by discriminating equation in the preceding January. indicates that there are two possible ways of how the SST discriminating index affect the rainfall patterns of flood season in China. On one hand the atmospheric circulation anomaly is brought, especially the North Pacific Oscillation anomalies, and the PNA atmospheric teleconnection associate is given, then the summer east China precipitation is affected. On the other hand, it leads to the anomalies of eigenvalues of summer 500 hPa western Pacific subtropical high, especially the anomalies of the proportions, intension and westward ridge point of subtropical high. As a result the summer east China precipitation is affected. It is obvious that the SST anomalies in preceding January of the north and the south in North Pacific Ocean have a very close connection with the summer east China rainfall patterns, and it has important synoptic climatological significance.
- rain pattern;
- SST;
- significant key region;
- atmospheric circulation

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References(41)

Figures and Tables

图 1 1951— 2002年1— 5月3类雨带类型对应海温距平场之间的显著性检验

(单位: ℃; 阴影区为达到95%信度检验区域)

Fig. 1 The map of significant test value of SSTA for Ⅰ, Ⅱ, Ⅲ rainfall pattern from Jan to May in 1951— 2002

(unit : ℃; shadow areas denote exceeding 95% confidence limit)

DownLoad: Full-Size Img PowerPoint

图 2 1月海温判别指数与同期500 hPa高度场的相关 (a) 和1月各雨带类型高度距平场之间的显著性检验 (b)

(阴影区为通过95%信度检验区域)

Fig. 2 (a) The correlation between SST discrimination index and geopotential height of 500 hPa in the preceding Jan, (b) the significant test of 500 hPa geopotential height for Ⅰ, Ⅱ, Ⅲ rainfall pattern in the preceding Jan

(shadow areas denote exceeding 95% confidence limit)

DownLoad: Full-Size Img PowerPoint

表 1 雨带类型的判别分析比较

Table 1 The discrimination analysis of rainfall pattern

表 2 1951— 2002年1月海温判别指数与500 hPa夏季西太平洋副热带高压特征量的关系

Table 2 The correlation between eigenvalues of 500 hPa summertime western Pacific subtropical high and SST discriminating index in the preceding Jan from 1951 to 2002

References

[1]	中国科学院大气物理研究所.海气相互作用与旱涝长期预报.北京:科学出版社, 1978:40-77. http://www.cnki.com.cn/Article/CJFDTOTAL-SYQY201603027.htm
[2]	陈兴芳, 宋文玲.初夏降水的大气环流和海温特征分析及其预报."八五"长期天气预报理论和方法的研究.北京:气象出版社, 1996:10-107. http://www.cnki.com.cn/Article/CJFDTOTAL-SYQY201603027.htm
[3]	陈烈庭.东太平洋区海水温度异常对热带大气环流及我国汛期降水的影响.大气科学, 1977, 1(1):1-12. http://www.cnki.com.cn/Article/CJFDTOTAL-DQXK197701000.htm
[4]	于淑秋, 林学椿.北太平洋海温的气候跃度及其对中国汛期降水的影响.热带气象学报, 1997, 13(3):265-275. http://www.cnki.com.cn/Article/CJFDTOTAL-RDQX703.008.htm
[5]	吕炯.海温异常与水旱问题.气象学报, 1950, 21(1):1-15. http://www.cnki.com.cn/Article/CJFDTotal-QXXB1950Z1000.htm
[6]	李崇银, 龙振夏.冬季黑潮增暖对我国东部汛期降水影响的数值模拟研究.气候变化若干问题的研究.北京:科学出版社, 1992:145-155. http://www.cnki.com.cn/Article/CJFDTOTAL-SYQY201603027.htm
[7]	陈烈庭, 吴仁广.太平洋各区海温异常对中国东部夏季雨带类型的共同影响.大气科学, 1998, 22(5):718-726. http://www.cnki.com.cn/Article/CJFDTOTAL-DQXK805.005.htm
[8]	叶笃正, 黄荣辉.长江黄河流域旱涝规律和成因研究.济南:山东科学技术出版社, 1996:237-242. http://www.cnki.com.cn/Article/CJFDTOTAL-SYQY201603027.htm
[9]	黄荣辉, 孙凤英.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异常的影响.大气科学, 1994, 18(2):141-151. http://www.cnki.com.cn/Article/CJFDTOTAL-DQXK199402001.htm
[10]	金祖辉, 陶诗言.ENSO循环与中国东部地区夏季和冬季降水关系的研究.大气科学, 1999, 23(6):663-672. http://www.cnki.com.cn/Article/CJFDTOTAL-DQXK199906003.htm
[11]	张琼, 刘平, 吴国雄.印度洋和南海海温与长江中下游旱涝.大气科学, 2003, 27(6):992-1006. http://www.cnki.com.cn/Article/CJFDTOTAL-DQXK200306003.htm
[12]	滕莺, 朱乾根.影响中国东部夏季降水的前期海温关键区.南京气象学院学报, 2000, 23(1):55-62. http://www.cnki.com.cn/Article/CJFDTOTAL-NJQX200001008.htm
[13]	李麦村, 吴仪芳, 黄嘉佑.中国东部季风降水与赤道东太平洋海温的关系.大气科学, 1987, 11(4):365-371. http://www.cnki.com.cn/Article/CJFDTOTAL-DQXK198704003.htm
[14]	李峰, 何立富.长江中下游地区夏季旱涝年际、年代际变化的可能成因研究.应用气象学报, 2002, 13(6):718-726. http://qikan.camscma.cn/jams/ch/reader/view_abstract.aspx?file_no=20020694&flag=1
[15]	廖荃荪, 赵振国.我国东部夏季降水的季度预报方法.应用气象学报, 1992, 3(增刊):1-9. http://www.cnki.com.cn/Article/CJFDTOTAL-YYQX1992S1000.htm
[16]	苗秋菊, 徐祥德.长江中下游旱涝的环流型与赤道东太平洋海温遥相关波列特征.气象学报, 2002, 60(6):687-697. http://www.cnki.com.cn/Article/CJFDTOTAL-QXXB200206005.htm
[17]	励申申, 寿绍文.赤道东太平洋海温与我国江淮流域夏季旱涝的成因分析.应用气象学报, 2000, 11(3):331-338. http://qikan.camscma.cn/jams/ch/reader/view_abstract.aspx?file_no=20000349&flag=1
[18]	陈桂英.El Niño和La Niña冬季增强型和减弱型及其对中国夏季旱涝的影响.应用气象学报, 2000, 11(2):154-164. http://qikan.camscma.cn/jams/ch/reader/view_abstract.aspx?file_no=20000224&flag=1
[19]	李崇银, 咸鹏.北太平洋海温年代际变化与大气环流和气候的异常.气候与环境研究, 2003, 8(3):258-273. http://www.cnki.com.cn/Article/CJFDTOTAL-QHYH200303001.htm
[20]	严华生, 王会军, 严小冬, 等.太平洋海温变化对我国降水可预报性的时空分析.高原气象, 2003, 22(2):155-161. http://www.cnki.com.cn/Article/CJFDTOTAL-GYQX200302009.htm
[21]	李忠贤, 孙照渤.1月份黑潮区域海温异常与我国夏季降水的关系.南京气象学院学报, 2004, 27(3):374-380. http://www.cnki.com.cn/Article/CJFDTOTAL-NJQX200403010.htm
[22]	赵振国.厄尔尼诺现象对北半球大气环流和中国降水的影响.大气科学, 1996, 20(4):422-428. http://www.cnki.com.cn/Article/CJFDTOTAL-DQXK604.005.htm
[23]	谭桂容, 孙照渤, 赵振国.我国东部夏季降水型与北半球大气环流和北太平洋海温的关系.南京气象学院学报, 1998, 21(1):1-7. http://www.cnki.com.cn/Article/CJFDTOTAL-NJQX801.000.htm
[24]	施能, 陈辉, 冯俊茹, 等.我国夏季雨型的前期异常特征及预报方法的初步研究.应用气象学报, 1999, 10(增刊):70-78. http://www.cnki.com.cn/Article/CJFDTOTAL-YYQX9S1.008.htm
[25]	陈兴芳, 赵振国.中国汛期降水预测研究及应用, 北京:气象出版社, 2000:1-20. http://www.cnki.com.cn/Article/CJFDTOTAL-SYQY201603027.htm
[26]	严华生, 杨素雨, 严小冬.北半球冬季大气环流变化对中国汛期雨带类型分布的影响.云南大学学报 (自然科学版), 2004, 26(6):497-503. http://www.cnki.com.cn/Article/CJFDTOTAL-YNDZ200406007.htm
[27]	严华生, 王学仁.多因变量及要素场统计预报.北京:气象出版社, 1991:38-44. http://www.cnki.com.cn/Article/CJFDTOTAL-SYQY201603027.htm
[28]	张尧庭, 方开泰.多元统计分析引论.北京:科学出版社, 1983:1-580. http://www.cnki.com.cn/Article/CJFDTOTAL-SYQY201603027.htm
[29]	中国科学院数学研究所统计组编.常用数理统计方法.北京:科学出版社, 1974:56-61. http://www.cnki.com.cn/Article/CJFDTOTAL-SYQY201603027.htm
[30]	黄嘉佑.气象统计分析与预报方法.北京:气象出版社, 2000:92-98. http://www.cnki.com.cn/Article/CJFDTOTAL-SYQY201603027.htm
[31]	艾秀, 陈兴芳.夏季副高与海温的相互关系及副高预测.热带气象学报, 2000, 16(1):1-8. http://www.cnki.com.cn/Article/CJFDTOTAL-RDQX200001000.htm
[32]	陶诗言.中国夏季副热带天气系统若干问题的研究.北京:科学出版社, 1963. http://www.cnki.com.cn/Article/CJFDTOTAL-SYQY201603027.htm
[33]	陈兴芳, 陈国珍.80年代前期我国夏季降水的特点及成因.气象, 1987, 13(4):12-16. doi: 10.7519/j.issn.1000-0526.1987.04.003
[34]	黄荣辉. 引起我国夏季旱涝的东亚大气环流异常遥相关及其物理机制的研究∥叶笃正, 黄荣辉. 旱涝气候研究进展. 北京: 气象出版社, 1990: 37-50.
[35]	杨义文, 陈兴芳. 北半球副高脊线的若干规律∥章基嘉. 长期天气预报论文集, 北京: 气象出版社, 1990: 198-205.
[36]	廖荃荪, 赵振国. 7~8月西太平洋副热带高压的南北位置异常变化及其对我国天气的影响∥章基嘉. 长期天气预报和日地关系研究. 北京: 海洋出版社, 1992: 131-139.
[37]	吴国雄.中国夏季降水异常空间模与副热带高压的关系.大气科学, 1997, 21(2):161-169. http://www.cnki.com.cn/Article/CJFDTOTAL-DQXK702.003.htm
[38]	沙万英, 郭其蕴.西太平洋副热带高压脊线变化与我国汛期降水的关系.应用气象学报, 1998, 9(增刊):31-38. http://www.cnki.com.cn/Article/CJFDTOTAL-YYQX8S1.004.htm
[39]	张琼, 吴国雄.长江流域大范围旱涝与南亚高压的关系.气象学报, 2001, 59(5):569-577. doi: 10.11676/qxxb2001.061
[40]	徐海明, 何金海, 周兵.江淮入梅前后大气环流的演变特征和西太平洋副高北跳西伸的可能机制.应用气象学报, 2001, 12(2):150-158. http://qikan.camscma.cn/jams/ch/reader/view_abstract.aspx?file_no=20010221&flag=1
[41]	姚愚, 严华生, 程建刚.主汛期6~8月副高各指数与中国160站降雨的关系.热带气象学报, 2004, 20(6):621-661. http://www.cnki.com.cn/Article/CJFDTOTAL-RDQX200406004.htm