南海中尺度涡旋的统计特征

doi:10.7523/j.issn.2095-6134.2016.01.015

中国科学院大学学报 ›› 2016, Vol. 33 ›› Issue (1): 97-106.DOI: 10.7523/j.issn.2095-6134.2016.01.015

南海中尺度涡旋的统计特征

黄亚文¹, 华丽娟¹, 钟霖浩², 冯士德³

1. 中国科学院大学地球科学学院中国科学院计算地球动力学重点实验室, 北京 100049;
2. 中国科学院大气物理研究所中国科学院东亚区域气候环境重点实验室, 北京 100029;
3. 中国科学院大气物理研究所中国科学院云降水物理与强风暴重点实验室, 北京 100029

收稿日期:2015-03-09 修回日期:2015-05-11 发布日期:2016-01-15
通讯作者: 钟霖浩
基金资助:
Supported by the National Science Foundation of China (41275064,41475072, and 41175057)

Characteristics of mesoscale eddies in South China Sea

HUANG Yawen¹, HUA Lijuan¹, ZHONG Linhao², FENG Shide³

1. Key Laboratory of Computational Geodynamics, University of Chinese Academy of Sciences, Beijing 100049, China;
2. Key Laboratory of Regional Climate-Environment for East Asia (RCE-TEA), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China;
3. Key Laboratory of Cloud-Precipitation Physics and Severe Storms (LACS), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China

Received:2015-03-09 Revised:2015-05-11 Published:2016-01-15
Supported by:
Supported by the National Science Foundation of China (41275064,41475072, and 41175057)

摘要/Abstract

摘要：

利用1992年10月至2012年4月共19.5年的中尺度涡集研究南海中尺度涡的统计特征.南海中尺度涡呈东北—西南向分布,其中大多数涡旋向西移动并伴有经向偏移.受南海环流形式的影响,东向移动涡旋多发生于吕宋岛西南部和越南东部海域.涡旋发生的季节变化显示在台湾和吕宋岛西南部.气旋(反气旋)式涡多发于春(冬)季,在吕宋岛西北部和越南东南部,气旋式涡多发生于冬季,反气旋式涡分别多发于秋季和夏季.进一步的相关性分析表明,地转涡度与涡旋形成具有较强相关性,风应力能量输入对涡旋的影响有限.

关键词: 南海, 中尺度涡, 季节变化, 空间变化

Abstract:

A dataset of mesoscale eddies from October 1992 to April 2012 is used to study eddies in South China Sea (SCS). Eddies mainly generate along northeast-southwest direction in SCS and most of them prefer a westward propagation with meridional deflections. Eastward propagating eddies occur more frequently on the southwest of Luzon and the east of Vietnam,and are mainly controlled by the circulation in SCS. Seasonal variations of eddy distribution show inconsistent characteristics in different regions of SCS. Cyclonic (anticyclonic) eddies prefer to occur during spring (winter) on the southwest of Taiwan and southwest of Luzon. While in the northwest of Luzon and southeast of Vitnam,cyclonic eddies prefer winter and anticyclonic eddies more likely in autumn and summer,respectively. Correlation analysis shows that wind stress curl can hardly benefit the formation of eddies directly while the geographic vorticity plays a significant role.

Key words: South China Sea, mesoscale eddy, seasonal variation, spatial variation CLC Number: P732.7 Document code: A

中图分类号:

P732.7

黄亚文, 华丽娟, 钟霖浩, 冯士德. 南海中尺度涡旋的统计特征[J]. 中国科学院大学学报, 2016, 33(1): 97-106.

HUANG Yawen, HUA Lijuan, ZHONG Linhao, FENG Shide. Characteristics of mesoscale eddies in South China Sea[J]. , 2016, 33(1): 97-106.

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南海中尺度涡旋的统计特征

Characteristics of mesoscale eddies in South China Sea

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