| 青藏高原OLR的气候特征及其对北半球大气环流的影响 |
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| 引用本文： | 李栋梁,章基嘉.青藏高原OLR的气候特征及其对北半球大气环流的影响[J].高原气象,1996,15(3):259-268. |
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| 作者姓名： | 李栋梁 章基嘉 |
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| 作者单位： | 兰州干旱气象研究所(李栋梁)，国家气候中心(章基嘉)，南京气象学院气象学系(吴洪宝) |
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| 摘 要： | 利用１９７４－１９９０年青藏高原地区地－气系统月平均射出长波辐射资料，采用ＥＯＦ方法分析了前３个特征向量场，得到了青藏高原地区地－气系统射出长波辐射的几种异常形式，阐述了它们的天气气候特征，并对不同气候区的持续 及其与北半球大气环流的关系作了研究。
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| 关 键 词： | 青藏高原 大气环流 气候特征 北半球 |
A STUDY ON THE EFFECTS OF CLIMATIC FEATURE OF OLR OVER THE QINGHAI-XIZANG PLATEAU ON GENERAL CIRCULATION IN NORTHERN HEMISPHERE |
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| LI Dongliang,ZHANG Jijia,WU Hongbao.A STUDY ON THE EFFECTS OF CLIMATIC FEATURE OF OLR OVER THE QINGHAI-XIZANG PLATEAU ON GENERAL CIRCULATION IN NORTHERN HEMISPHERE[J].Plateau Meteorology,1996,15(3):259-268. |
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| Authors: | LI Dongliang ZHANG Jijia WU Hongbao |
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| Institution: | LI Dongliang 1 ZHANG Jijia 2 WU Hongbao 3 |
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| Abstract: | Based on the NOAA's monthly mean gridded OLR datd over the Qinghai-Xizang Plateau from 1974 to 1990,the first three characteristic vectores and their distribution feature of time and space anomaly have been analysed by EOF method.The climatic feature of OLR and the persistence in different climatic regiones and the relationship between OLR and general circulation over Northern Hemisphere were studied.It is shown that the anomaly of OLR can cause the anomaly of 500hPa monthly mean general circulation over Northern Hemisphere.A Rossby quasi-permanent wave train propagates along large circle route in the same time.There is a good persistence of OLR over the Qinghai-Xizang Plateau in winter and it can cause the anomaly of general circulation with one or two months lag.There are only northeast and northweest wave trains over the Qinghai-Xizang Plateau in summer. |
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| Keywords: | The Qinghai-Xizang Plateau Outgoing longwave radiation General circulation anomaly Empirical orthogonal function |
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