| 摘要: |
| 计算了黑潮海域海洋异常加热与后期1 - 12个月北半球大气环流的时滞相关，分析了二者的相关关系。结果表明，海洋异常加热对后期半年到一年北半球大气环流场有重要影响。当黑潮海域海洋异常多加热时，后期半球范围内大气环流的经向度将趋减小，反之则趋加强。在分析相关场演变的基础上，讨论了上述时滞关系的可能物理过程，指出黑潮海域海洋异常加热对后期下游大气环流型的影响，是通过改变中纬大气与高纬极地大气之间温度和位势高度梯度，进而影响后期下游大气环流型来实现的。 |
| 关键词: 海洋异常加热 时滞遥相关 |
| DOI： |
| 分类号: |
| 基金项目:中国科学院ky85－10项目资助 |
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| INFLUENCE OF THE KUROSHIO REGION MARINE HEATING ANOMALY ON THE NORTH HEMISPHERE ATMOSPHERIC CIRCULATION IN THE FOLLOWING SEASONS |
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Zhao Yongping1, G.A.McBean2
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1.Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071;2.The University of British Columbia, Canada, Vancouver VbT 1W5
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| Abstract: |
| The relations between the Kuroshio region marine heating anomaly and the North Hemisphere atmospheric circulation with 1 - 12 month lag were studied and showed the important influence of the marine heating anomaly on the atmospheric circulation. The results show that when the Kuroshio region marine heating is larger than normal, the semi-persistent North Hemisphere weather systems in the following seasons will be weaker, e.g., the stronger the Kuroshio region marine heating in the winter half year, the weaker the Canada Low in the summer half year, and the weaker the Europe Low and the Ural High in the next winter half year, and vice versa. A hypothesis is proposed to preliminarily explain the above phenomena, i. e. the influence of the Kuroshio region heating anomaly on the atmospheric circulation in following seasons is proceeded by altering the gradients of atmospheric temperature and geopotential height between middle and high latitude regions. |
| Key words: Marine heating anomaly, Atmospheric circulation lag correlation |
