Journal of Arid Meteorology

Previous Articles     Next Articles

ariation Characteristics of Winter Temperature and Mechanism Analysis in Shaanxi Province During 1961-2012

WANG Na1, WANG Ji2, WANG Qi1, XIAO Keli3, YAO Jing4, FANG Jiangang1   

  1. 1. Shaanxi Climate Center, Xi’an 710014, China; 2. Beijing Municipal Climate Centre,
     Beijing 100089, China; 3. Shaanxi Meteorological Society, Xi’an 710016, China;
    4. Shaanxi Meteorological Observatory, Xi’an 710014, China
  • Online:2016-08-31 Published:2016-08-31



  1. 1.陕西省气候中心,陕西西安710014;2.北京市气候中心,北京100089;
  • 作者简介:王娜(1984-),女,甘肃陇南人,硕士,高级工程师,主要从事气候预测及气候变化方面的研究.
  • 基金资助:



Based on the monthly mean temperature in winter (from December to next February) in Shaanxi Province and NCEP reanalysis data from 1961 to 2012, the annual variation of temperature in winter in Shaanxi and its mechanisms were analyzed by using EOF analysis, synthetic analysis, gaussian filtering, regression analysis, etc. The results showed the dominant spatial mode of winter temperature anomaly in Shaanxi during 1961-2012 was consistent in the whole area. During the cold winter in Shaanxi, there was a stable negative anomaly in western China on 500 hPa height field and a quasi-barotropic structure in vertical direction. The correlation between the West Pacific Pattern index (WP) and time coefficient of the EOF1 of winter temperature was the most significant. The sea surface temperature (SST) in middle and high latitudes might be a major forcing factor of affecting winter temperature in Shaanxi. When the sea surface temperature anomaly (SSTA) in the Northwestern Pacific was negative, and SST was significantly low in Kuroshio, tropical Indian Ocean and the North Atlantic, it was advantageous to low winter temperature in Shaanxi Province. The abnormal signals of SST in these key areas had obviously emerged in the previous summer and autumn, it had indicative significance for winter temperature prediction in Shaanxi.

Key words:  winter temperature, sea surface temperature anomalies, teleconnection, Shannxi Province


利用1961—2012年NCEP/NCAR再分析资料以及陕西月平均气温资料,分析陕西冬季气温年际变化特征及其形成机制。结果表明:陕西冬季气温主要呈全区一致的空间分布型,低温年,500 hPa高度场我国西部存在稳定的负距平,垂直方向呈准正压结构,西太平洋遥相关型(WP)与第一模态时间系数的相关性最显著。中高纬地区海温可能是影响陕西冬季气温的主要强迫因子,西北太平洋海温负异常,黑潮区、热带印度洋、北大西洋海温显著偏低,有利于陕西冬季气温偏低,且这些关键区海温的异常信号,在前期夏、秋季已经表现明显,对冬季气温预测有指示意义。

关键词: 冬季气温, 海表温度异常, 遥相关, 陕西

CLC Number: