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近100年来中东亚干旱区气候异常与海平面气压异常的关系
其他题名Relationships between Climatic Anomaly in Arid Region of Centre-East Asia and Sea Level Pressure Anomaly in the Last 100 Years
王劲松; 陈发虎; 靳立亚; 郭江勇
发表日期2008
ISSN1000-0534
卷号27期号:1页码:84-95
中文摘要利用中东亚干旱区近100年(1901-2002年)降水、气温及北半球海平面气压的格点资料,分析了该干旱区冬季、夏季降水和气温与海平面气压分布形势的相关关系,同时对典型的降水和气温异常年份的海平面气压距平场进行了合成分析。结果表明:冬季西北太平洋海平面气压持续增强、阿拉伯海附近维持较高气压时,中东亚干旱区冬季降水偏多、气温偏高。前期春季海平面气压的变化对中东亚干旱区夏季降水有显著的影响,当春季阿留申低压和其南部的西太平洋副热带高压偏强时,中东亚干旱区夏季降水偏多;当春季西太平洋副热带高压位置附近的海平面气压偏高时,中东亚干旱区夏季气温偏低;前期春季海平面气压的异常对中东亚干旱区气候变化的显著影响,对气候预测有很好的指示意义。另外,中东亚干旱区冬季异常多雨、高温年份,海平面气压在中高纬度地区为负距平,在低纬度地区则为正距平。而冬季异常少雨、低温年份,气压场分布的主要特征则相反。在夏季异常多雨年,中东亚干旱区主要位于正的气压距平区,夏季异常少雨年则反之。夏季异常气温偏高年,正距平区主要分布在印度半岛北部,中东亚干旱区西部处于负距平区、东部处于弱的正距平区中。分析结果同时说明了中东亚干旱区易出现冬季多雨/高温(少雨/低温)和夏季多雨/低温(少雨/高温)的气候配置。
英文摘要Based on the grid data of precipitation, temperature in arid region of centre east Asian (ARCEA) and North Hemispheric sea level pressure (SLP) during 1901 2002, the relationships among the precipitation, temperature and SLP in winter and summer are analyzed, respectively. And the composited analysis of SLP anomaly field is investigated for the representative anomalous years of precipitation and temperature. The results show that when SLP is kept higher over the NW Pacific and the Arabian Sea in winter, the precipitation is more and air temperature is high in ARCEA in winter. In spring when the Aleutian low and its southern part' west Pacific subtropical high are intensive, the summer precipitation in ARCEA is more. As SLP in ARCEA itself is kept lower in spring, the temperature of ARCEA has higher in summer. The notable impact of spring SLP anomaly on the climate change in ARCEA has guiding sig nificance in climatic prediction. In addition, the negative (positive) SLP anomaly is in extratropical zonal (low latitude) when the ARCEA has abnormal more precipitation and higher temperature in winter. The positive SI.P anomaly is in ARCEA when it has abnormal more precipitation. The positive SLP anomaly mainly located in North of India peninsula, the west part of ARCEA is negative and east of it is weaker positive SLP anomaly. The results also show that it is easy to occur these climatic types that more precipitation/higher temperature (less precipitation/lower temperature) in winter and more precipitation/lower temperature (less precipitation/higher temperature) in ARCEA in summer.
关键词中东亚干旱区气候异常海平面气压相关关系
英文关键词Arid rgion of centre-east Asian;Climatic anomaly;Sea level pressure;Correlation
语种中文
WOS研究方向Meteorology & Atmospheric Sciences
WOS类目METEOROLOGY ATMOSPHERIC SCIENCES
CSCD记录号CSCD:3256169
来源期刊高原气象
来源机构兰州大学 ; 中国科学院青藏高原研究所
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/1675
推荐引用方式
GB/T 7714
王劲松,陈发虎,靳立亚,等. 近100年来中东亚干旱区气候异常与海平面气压异常的关系[J]. 兰州大学, 中国科学院青藏高原研究所,2008,27(1):84-95.
APA 王劲松,陈发虎,靳立亚,&郭江勇.(2008).近100年来中东亚干旱区气候异常与海平面气压异常的关系.高原气象,27(1),84-95.
MLA 王劲松,et al."近100年来中东亚干旱区气候异常与海平面气压异常的关系".高原气象 27.1(2008):84-95.
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