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| 山东冬季近41年气温异常及其海气背景场特征 | |
| 引用本文： | 杨成芳,孙即霖,薛德强.山东冬季近41年气温异常及其海气背景场特征[J].中国海洋大学学报(自然科学版),2004,34(2):165-172. |
| 作者姓名： | 杨成芳 孙即霖 薛德强 |
| 作者单位： | 1. 山东省气象中心,山东,济南,250031;中国海洋大学海洋环境学院,山东,青岛,266003 2. 山东省气象中心,山东,济南,250031 3. 中国海洋大学海洋环境学院,山东,青岛,266003 |
| 基金项目： | 山东省气象局2002年重点攻关项目(200214)资助 |
| 摘 要： | 采用山东省 2 6个站点 1 96 1～ 2 0 0 1年的月平均气温资料 ,利用 Mann- Kendall突变检验法、线性倾向估计等方法分析了山东省冬季 (1 2月～次年 1月 )平均气温的变化特征 ,并从北半球5 0 0 h Pa位势高度距平场、冷空气活动路径及太平洋海温距平场等方面分析了冬季气温异常的原因。分析发现山东省冬季气温变化具有明显的阶段性 ,突变发生在 1 986年。存在冷冬年欧亚盛行经向环流 ,暖冬年盛行纬向环流的差异。这可能与冷空气路径不同有直接原因。 |
| 关 键 词： | 冬季气温异常 突变 大气环流 冷空气路径 海温 |
| 文章编号： | 1672-1574(2004)02-165-08 |
| 修稿时间： | 2003年8月28日 |
An Analysis of Features of Anomalous Winter Temperature in Shandong Province in Recent 41 Years |
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| YANG Cheng-fang ,SUN Ji-lin ,XUE De-qiang.An Analysis of Features of Anomalous Winter Temperature in Shandong Province in Recent 41 Years[J].Periodical of Ocean University of China,2004,34(2):165-172. | |
| Authors: | YANG Cheng-fang SUN Ji-lin XUE De-qiang |
| Institution: | YANG Cheng-fang 1,2,SUN Ji-lin 1,XUE De-qiang2 |
| Abstract: | The climatic features of winter average temperature in Shandong Province are analyzed by means of Mann-Kendall method. In addition, the paths of cold air intrusion the 500hPa height departure and SSTA(Sea Surface Temperature Anomaly) in the same and preceding months are analyzed.The results show that the winter temperature in Shandong Province has changed markedly in different phases.The shift occurred in 1986. The path of cold air is regarded as one of the most important factors which lead to significant change in winter average temperature. The 500hPa height anomaly of warm winters bears zonal flow in mid- and high-latitudes in Asia-European continent,while longitudinal circulation prevailing in cold winters. In warm winter, the SSTA in the equatorial eastern Pacific is of the ENSO character in the previous spring and summer, and of the La Nina character in the autumn and winter. During the same and previous period in cold winter, the SSTA in the equatorial eastern Pacific and Nino1 2 region is negative. |
| Keywords: | winter air temperature anomaly jump air circulationa path of cold air SSTA |
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