Spatio-temporal variability of winter temperature and precipitation in Southwest China

doi:10.1007/s11442-011-0842-9

Abstract

Abstract:

In recent years, the socio-economic impacts of winter extreme climate events have underscored the importance of winter climate anomalies in Southwest China (SWC). The spatio-temporal variability of surface air temperature (SAT) and precipitation in SWC and their possible causes have been investigated in this paper based on observational data from 1961 to 2010. The results indicate that SAT anomalies in SWC have two dominate modes, one is homogenous, and the other a zonal dipole. The former is caused by the anomalies of East Asian winter monsoon; the latter arises 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). Neither NAM nor ENSO has significant impacts on SAT in SWC. The anomalies of NAM are associated with the anomalies of tropical circulations, and therefore precipitation over the SWC. When NAM is in positive (negative) phase, the winter precipitation is more (less) than normal in SWC. Winter precipitation increase over the whole SWC is associated with the El Ni?o. However, during La Ni?a winter, the pattern is not uniform. There is an increase in precipitation over the central parts and a decrease in western and eastern parts of SWC. The severe drought in SWC in winter 2010 is more likely caused by anomalies of NAM, not El Ni?o.

Key words: Southwest China, winter 2010, drought, winter monsoon, northern hemisphere annular mode (NAM, AO)

JIANG Xingwen, LI Yueqing. Spatio-temporal variability of winter temperature and precipitation in Southwest China[J].Journal of Geographical Sciences, 2011, 21(2): 250-262.

References

Chen Wen, Kand Lihua, 2006. 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,30(5): 863-870. (in Chinese)
Duan Xu, Li Ying, Su Xiaodong, 2002. The structure of Kunming Quasi-Stationary Front. Plateau Meteorology,21(2): 205-209. (in Chinese)
Gao Hui, 2007. Comparison of four East Asian winter monsoon indices. Acta Meteorological Sinica, 65(2):272-279. (in Chinese)
Gong D Y, Wang S W, Zhu J H, 2001. East Asian winter monsoon and Arctic Oscillation. Geophys. Res. Lett.,28(10): 2073-2076.
Gong Daoyi, Wang Shaowu, 2003. Influence of Arctic Oscillation on winter climate over China. Acta Geographica Sinica, 58(4): 559-568. (in Chinese)
He Xicheng, Ding Yihui, He Jinhai et al., 2006. An analysis on anomalous precipitation in southern China during winter monsoons. Acta Meteorologica Sinica, 64(5): 594-604. (in Chinese)
He Xicheng, Ding Yihui, He Jinhai, 2008. Response characteristics of the East Asian winter monsoon to ENSO events. Chinese Journal of Atmospheric Sciences, 32(2): 335-344. (in Chinese)
Jhun J G, Lee E J, 2004. A new East Asian winter monsoon index and associated characteristics of the winter monsoon. J Climate, 17(4): 711-726.
Jiang Xingwen, Li Yueqing, Li Chun et al., 2007. Characteristics of summer water vapor transportation in Sichuan Basin and its relationship with regional drought and flood. Plateau Meteorology, 26(3): 476-484. (in Chinese)
Kalnay E, Kanamitsu M, Kistler R et al., 1996. The NCEP/NCAR 40-year reanalysis project. Bull. Amer. Meteor.Soc., 77:437-470.
Liu Xiaodong, Chen Baode, 2000. Climatic warming in the Tibetan Plateau during recent decades. International Journal of Climatology, 20(14): 1729-1742.
Li J P, 2005a. Coupled air-sea oscillations and climate variations in China. In: Qin D (ed.). Climate and Environmental Evolution in China (First Volume). Beijing: China Meteorological Press, 324-333. (in Chinese)
Li J P, 2005b. Physical nature of the Arctic Oscillation and its relationship with East Asian atmospheric circulation.In: Yu Q, Chen W et al. (eds.). Air-Sea Interaction and Its Impacts on China Climate. Beijing: China Meteorological Press, 169-176. (in Chinese)
Li J P, Wang J, 2003. A modified zonal index and its physical sense. Geophys. Res. Lett., 30(12), 1632, doi:10.1029/2003GL017441.
Li J, Yu R C, Zhou T J et al., 2005. Why is there an early spring cooling shift downstream of the Tibetan Plateau.J Climate, 18(22): 4660-4668.
North G R, Moeng F J, Bell T J et al., 1982. Sampling errors in the estimation of empirical orthogonal functions.Mon. Wea. Rev., 110: 699-706.
Smith, T M, Reynolds R W, Thomas C Peterson et al., 2008. Improvements to NOAA's historical merged land-ocean surface air temperature analysis (1880-2006). J Climate, 21(10): 2283-2296.
Thompson D W J, Wallace J M, 1998. The Arctic Oscillation signature in the wintertime geopotential height and air temperature fields. Geophys. Res. Lett., 25: 1297-1300.
Wang B, Fu X, 2000. Pacific-East Asian teleconnection: How does ENSO affect East Asian climate? J Climate,13: 1517-1536.
Wang B, Zhang Q, 2002. Pacific-East Asian teleconnection (Part II): How the Philippine sea anomalous anticyclone is established during El Nino development? J Climate, 15: 3252-3265.
Wu B Y, Wang J, 2002. Winter Arctic Oscillation, Siberian High and East Asian winter monsoon. Geophys. Res.Lett., 29(19), 1897, doi: 10. 1029/ 2002GL015373.
Zhang Z Y, Gong D Y, Hu M et al., 2009. Anomalous winter air temperature and precipitation events in southern China. Journal of Geographical Sciences, 19(4): 471-488, doi: 10.1007/s11442-009-0471-8.
Zhao Linna, Ma Qingyun, Yang Guiming et al., 2008. Disasters and its impact of a severe snow storm and freezing rain over southern China in January 2008. Climatic and Environmental Research, 13(4): 556-566. (in Chinese)
Zhou Liangguang, Wang Dong, Dai Shibao et al., 2009. A study on the exceptionally low flow of Yangtze River in the flood season of 2006. Journal of Natural Resources, 24(3): 448-456. (in Chinese)
Zhu Yanfeng, 2008. An index of East Asian winter monsoon applied to description the Chinese mainland winter air temperature changes. Acta Meteorologica Sinica, 66(5): 781-788. (in Chinese)

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