| 我国西北地区气温变化与Nino3区SST的关系及其稳定性分析 |
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| 引用本文： | 郭渠,江玉华,程炳岩,孙卫国,李瑞. 我国西北地区气温变化与Nino3区SST的关系及其稳定性分析[J]. 冰川冻土, 2010, 32(1): 83-90 |
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| 作者姓名： | 郭渠 江玉华 程炳岩 孙卫国 李瑞 |
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| 作者单位： | 重庆市气候中心,重庆,401147;重庆市气象台,重庆,401147;南京信息工程大学,应用气象学院,江苏,南京,210044;济南市气象局,山东,济南,250002 |
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| 基金项目： | 中国气象局业务项目“三峡库区气候监测预警评估业务运行和改进”;;中国气象局气候变化研究专项(CCSF2007-24);;南京信息工程大学科研课题(9922)资助 |
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| 摘 要： | 根据1956—2005年中国西北地区72个观测站的月平均气温资料,分析了气温的空间分布特征,利用相关分析、滑动t检验、小波分析和小波凝聚谱等方法,探讨了Nio3区SST与西北地区气温的关系及其稳定性.结果表明:一致性异常分布是西北地区气温变化的最主要空间模态,第一模态时间系数与Nio3区SST有着较好的相关关系.在典型的ENSO暖状态,西北地区气温偏高,在典型的ENSO冷状态则情况相反.西北地区气温和Nio3区SST关系的稳定性分析表明,气温和SST之间在1～5a变化周期上存着较好的相关关系,但这种相关关系并不稳定,存在着年代际变化:1956—1970年正相关较好,1992—2005年反相关较好,而在1971—1991年二者相关关系较差.
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| 关 键 词： | 西北气温 Nino3区SST 交叉小波 |
Relationship between SST in Nino3 and Air Temperature over Northwest China, Together with Its Stability |
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| GUO Qu,JIANG Yu-hua,CHENG Bing-yan,SUN Wei-guo,LI Run. Relationship between SST in Nino3 and Air Temperature over Northwest China, Together with Its Stability[J]. Journal of Glaciology and Geocryology, 2010, 32(1): 83-90 |
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| Authors: | GUO Qu JIANG Yu-hua CHENG Bing-yan SUN Wei-guo LI Run |
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| Affiliation: | 1.Chongqing Climate Center;Chongqing 401147;China;2.Chongqing Meteorological Office;3.Department of Applied Meteorology;Nanjing University of Information Science and Technology;Nanjing Jiangsu 210044;4.Jinan Meteorological Bureau;Jinan Shandong 250002;China |
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| Abstract: | Based on the monthly mean temperatures of 72 meteorological stations in Northwest China during 1956-2005,air temperature distribution was analyzed.At the same time,by correlation analysis,moving t-test and cross-wavelet transform,the relationship between air temperature in Northwest China and ENSO,together with its stability,were also analyzed.The main results are as follows:The consistent abnormity temperature distribution is the principal mode of air temperature variation.Time series of the leading mode o... |
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| Keywords: | air temperature over Northwest China cross-wavelet |
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