The Spatio-temporal Variation of Winter Climate Anomalies in Southwestern China and the Possible Influencing Factors

  • 1. Institute of Plateau Meteorology, China Meteorological Administration, Chengdu 610072, China;

    2. College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, China

Received date: 2010-06-15

  Revised date: 2010-08-06

  Online published: 2010-11-20

Supported by

National Natural Science Foundation of China, No.40875060; No.60832012; Basic Research and Operation Program of Institute of Plateau Meteorology, China Meteorological Administration, No.BROP201017]


The impacts of winter extreme climate events in recent years on socio-economy indicated that the importance of winter climate anomalies is the same as its summer counterpart in southwestern China (SWC). The spatio-temporal variations and its possible causes of climate anomalies in SWC were investigated by utilizing observation data from 1961 to 2010. The results indicate that surface air temperature anomalies in SWC have two dominant modes, one is homogenous, the other is dipole in latitudinal direction. The former was caused by the anomalies of East Asian winter monsoon, the latter arose from the anomalies of both subtropical west Pacific high and regional cold air in lower troposphere. The most dominant mode of precipitation anomalies in SWC is homogenous and it has a high correlation with northern hemisphere annular mode (NAM, AO). NAM and ENSO did not have significant impacts on the variation of surface air temperature in SWC. The anomalies of NAM would lead to the anomalies of tropical circulations. When NAM is in positive (negative) phase, the winter precipitation is more (less) than normal in SWC. Precipitation in the whole SWC increased during El Niño winter, but increased in central SWC, and decreased in west and east of SWC during La Niña winter. The severe drought in SWC in the winter of 2010 is more likely caused by anomalies of NAM instead of El Niño.

Cite this article

JIANG Xingwen, LI Yueqing . The Spatio-temporal Variation of Winter Climate Anomalies in Southwestern China and the Possible Influencing Factors[J]. Acta Geographica Sinica, 2010 , 65(11) : 1325 -1335 . DOI: 10.11821/xb201011002


[1] Li J, Yu R C, Zhou T J et al. Why is there an early spring cooling shift downstream of the Tibetan Plateau. Journal of Climate, 2005, 18(22): 4660-4668.

[2] Liu Xiaodong, Chen Baode. Climatic warming in the Tibetan Plateau during recent decades. International Journal of Climatology, 2000, 20(14): 1729-1742.

[3] Zhou Liangguang, Wang Dong, Dai Shibao et al. A study on the exceptionally low flow of Yangtze River in the flood season of 2006. Journal of Natural Resources, 2009, 24(3): 448-456.

[周亮广, 王岽, 戴仕宝等. 长江2006 年汛期特枯径 流分析. 自然资源学报, 2009, 24(3): 448-456.]

[4] Jiang Xingwen, Li Yueqing, Li Chun et al. Characteristics of summer water vapor transportation in Sichuan Basin and its relationship with regional drought and flood. Plateau Meteorology, 2007, 26(3): 476-484.

[蒋兴文, 李跃清, 李春等. 四川 盆地水汽输送及其对旱涝的影响. 高原气象, 2007, 26(3): 476-484.]

[5] Zhao Linna, Ma Qingyun, Yang Guiming et al. Disasters and its impact of a severe snow storm and freezing rain over southern China in January 2008. Climatic and Environmental Research, 2008, 13(4): 556-566.

[赵琳娜, 马清云, 杨贵名 等. 2008 年初我国低温雨雪冰冻对重点行业的影响及致灾成因分析. 气候与环境研究, 2008, 3(4): 556-566.]

[6] Kalnay E., Kanamitsu M, Kistler R et al. The NCEP/NCAR 40-year reanalysis project. Bull. Amer. Meteor. Soc., 1996, 77: 437-470.

[7] Smith T M, Reynolds R W, Thomas C Peterson et al. Improvements to NOAA's historical merged land-ocean surface temperature analysis (1880-2006). J Climate, 2008, 21(10): 2283-2296.

[8] Jhun J G, Lee E J. A new East Asian winter monsoon index and associated characteristics of the winter monsoon. J Climate, 2004 , 17(4): 711-726.

[9] Li J, Wang J. A modified zonal index and its physical sense. Geophys. Res. Lett., 2003, 30(12): 1632, doi: 10.1029/ 2003GL017441.

[10] Li Jianping. Coupled air-sea oscillations and climate variations in China//Qin Dahe. Climate and Environmental Evolution in China (First Volume). Beijing: China Meteorological Press, 2005: 324-333.

[李建平. 海气耦合涛动与中国气候变化// 秦大河. 中国气候与环境演变(上卷). 北京: 气象出版社, 2005: 324-333.]

[11] Li Jianping. Physical nature of the Arctic Oscillation and its relationship with East Asian atmospheric circulation//Yu Yongqiang, Chen Wen. Air-Sea Interaction and Its Impacts on China Climate. Beijing: China Meteorological Press, 2005: 169-176.

[李建平. 北极涛动的物理意义及其与东亚大气环流的关系//俞永强, 陈文. 海—气相互作用对我国气候变化 的影响. 北京: 气象出版社, 2005: 169-176.]

[12] North G R, Moeng F J, Bell T J et al. Sampling errors in the estimation of empirical orthogonal functions. Mon. Wea. Rev., 1982, 110: 699-706.

[13] Duan Xu, Li Ying, Sun Xiaodong. The structure of Kunming quasi-stationary front. Plateau Meteorology, 2002, 21(2): 205-209.

[段旭, 李英, 孙晓东. 昆明准静止锋结构. 高原气象, 2002, 21(2): 205-209.]

[14] Gao Hui. Comparison of four East Asian winter monsoon indices. Acta Meteorologica Sinica, 2007, 65(2): 272-279.

[高 辉. 东亚冬季风指数及其对东亚大气环流异常的表征. 气象学报, 2007, 65(2): 272-279.]

[15] Thompson D W J, Wallace J M. The Arctic Oscillation signature in the wintertime geopotential height and temperature fields. Geophys. Res. Lett., 1998, 25: 1297-1300.

[16] He Xicheng, Ding Yihui, He Jinhai et al. An analysis on anomalous precipitation in southern China during winter monsoons. Acta Meteorologica Sinica, 2006, 64(5): 594-604.

[何溪澄, 丁一汇, 何金海等. 中国南方地区冬季风降水异 常的分析. 气象学报, 2006, 64(5): 594-604.]

[17] He Xicheng, Ding Yihui, He Jinhai. Response characteristics of the East Asian winter monsoon to ENSO events. Chinese Journal of Atmospheric Sciences, 2008, 32(2): 335-344.

[何溪澄, 丁一汇, 何金海. 东亚冬季风对ENSO事件的响应特 征. 大气科学, 2008, 32(2): 335-344.]

[18] Zhang Z Y, Gong D Y, Hu M et al. Anomalous winter temperature and precipitation events in southern China. Journal of Geographical Sciences, 2009, 19(4): 471-488, doi: 10.1007/s11442-009-0471-8.

[19] Gong D Y, Wang S W, Zhu J H. East Asian winter monsoon and Arctic Oscillation, Geophys. Res. Lett., 2001, 28(10): 2073-2076.

[20] Wu B Y, Wang J. Winter Arctic Oscillation, Siberian High and East Asian winter monsoon. Geophys. Res. Lett., 2002, 29 (19): 1897, doi:10.1029/2002GL015373.

[21] Chen Wen, Kang Lihua. Linkage between the Arctic Oscillation and winter climate over East Asia on the interannual timescale: Roles of quasi-stationary planetary waves. Chinese Journal of Atmospheric Sciences, 2006, 30(5): 863-870.

[陈 文, 康丽华. 北极涛动与东亚冬季气候在年际尺度上的联系: 准定常行星波的作用. 大气科学, 2006, 30(5): 863-870.]

[22] Gong Daoyi, Wang Shaowu. Influence of Arctic Oscillation on winter climate over China. Acta Geographica Sinica, 2003, 58(4): 559-568.

[龚道溢, 王绍武.近百年北极涛动对中国冬季气候的影响. 地理学报, 2003, 58(4): 559-568.]

[23] Zhu Yanfeng. An index of East Asian winter monsoon applied to description the Chinese mainland winter temperature changes. Acta Meteorologica Sinica, 2008, 66(5): 781-788.

[朱艳峰.一个适用于描述中国大陆冬季气温变化的东亚冬 季风指数. 气象学报, 2008, 66(5): 781-788.]

[24] Wang B, Fu X. Pacific-East Asian teleconnection: How does ENSO affect East Asian climate? J Climate, 2000, 13: 1517-1536.

[25] Wang B, Zhang Q. Pacific-East Asian teleconnection (Part II): How the Philippine sea anomalous anticyclone is established during El Nino development? J Climate, 2002, 15: 3252-3265.