| 冬季蒙古高压与北太平洋海温异常的年际尺度关系 |
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| 引用本文： | 李崇银,王力群,顾薇.冬季蒙古高压与北太平洋海温异常的年际尺度关系[J].大气科学,2011,35(2):193-200. |
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| 作者姓名： | 李崇银 王力群 顾薇 |
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| 作者单位： | 1.解放军理工大学气象学院, 南京,211101;中国科学院大气物理所大气科学和地球流体力学数值模拟国家重点实验室, 北京,100029 |
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| 基金项目： | 国家重点基础研究发展计划项目2007CB411805 |
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| 摘 要： | 蒙古高压和北太平洋海区的气压差被认为是造成东亚冬季风及其变化的重要原因,而过去有关的研究以其年代际时间尺度为多,本文的研究揭示了冬季蒙古高压和北太平洋海温异常(SSTA)在年际时间尺度上的相互关系.冬季蒙古高压的活动与太平洋年代际振荡(PDO)之间在年际时间尺度上也存在明显的负相关,冬季的强(弱)蒙古冷高压活动往往对应...
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| 关 键 词： | 蒙古高压 北太平洋海温 太平洋年代际振荡(PDO) 年代际通道(IP) |
Interannual Time-Scale Relationship between Mongolia High and SST Anomaly in the North Pacific in Winter |
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| Li Chongyin,Wang Liqun and Gu Wei.Interannual Time-Scale Relationship between Mongolia High and SST Anomaly in the North Pacific in Winter[J].Chinese Journal of Atmospheric Sciences,2011,35(2):193-200. |
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| Authors: | Li Chongyin Wang Liqun and Gu Wei |
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| Institution: | 1.Meteorological College, PLA University of Science and Technology, Nanjing, 211101; State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 1000292.Meteorological College, PLA University of Science and Technology, Nanjing, 2111013.National Climate Center, China Meteorological Administration, Beijing, 100081 |
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| Abstract: | The difference of sea level pressure(SLP) between the Mongolia high and the North Pacific has been regarded as an important reason to cause East Asian winter monsoon and its variation,but most of the interrelated studies are associated with interdecadal time scale.This study will reveal the relationship on interannual time scale between the Mongolia high and the sea surface temperature(SST) in the North Pacific in winter.The data analyses show that negative correlation between the Mongolia high and the Pacific Decadal Oscillation(PDO) is still evident on interannual time scale,and strong(weak) Mongolia high in winter is corresponding to negative(positive) phase of the PDO;interdecadal variation exists in this interannual negative correlation,and it generally appears in the period that the interdecadal correlation is not distinct.The data analyses also show that there is a high correlation belt between the winter Mongolia high index and the SST in the North Pacific from the northeastern Pacific to the tropical western Pacific,and both of its location and pattern are similar to the Interdecadal Pathway(IP) in the previous research.This correlation obviously exists in the period from the preceding spring to the corresponding winter,which demonstrates a fixed feature of the air-sea interaction in the Asia / North Pacific area,and it can be called air-sea interaction bridge(SAIB) in the middle latitudes of the North Pacific.It is also shown that the distribution of correlation coefficient expressing the SAIB varies with the season,which means that the interannual correlation of the air-sea interaction has seasonal variation characteristics.Since the SSTA mode is relatively stationary,the PDO and SST anomaly in the SAIB region could be the factor to predict the Mongolia high activity in winter(East Asian winter monsoon).Particularly in the earlier stage(especially in summer),positive SST anomaly in the SAIB region could have the indicative sense for the enhancement of Mongolia high(East-Asian monsoon) activity in winter. |
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| Keywords: | Mongolia high sea surface temperature (SST) in the North Pacific Pacific Decadal Oscillation (PDO) Interdecadal Pathway (IP) |
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