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湾流区和黑潮区两个超强爆发性气旋发展过程中热力强迫作用的比较    

Comparison of Thermal Forcing Factors for Two Super Explosive Cyclones over the Gulf Stream and Kuroshio Regions

文献类型:期刊文献

中文题名:湾流区和黑潮区两个超强爆发性气旋发展过程中热力强迫作用的比较

英文题名:Comparison of Thermal Forcing Factors for Two Super Explosive Cyclones over the Gulf Stream and Kuroshio Regions

作者:陶咪咪[1];张韶晶[1];张树钦[1];严厉[1];薛宇峰[1];郑燕珠[1];黄哲帆[1]

机构:[1]广东海洋大学海洋与气象学院,南海海洋气象研究院,广东湛江524088

年份:2021

卷号:41

期号:4

起止页码:34

中文期刊名:广东海洋大学学报

外文期刊名:Journal of Guangdong Ocean University

收录:CSTPCD、、北大核心、北大核心2020

基金:广东海洋大学“创新强校工程”科研项目(230419106);2020年度广东省大学生创新创业训练计划项目(S202010566012);广东海洋大学“创新强校”资助项目(230419053);广东海洋大学科研启动费资助项目(R19045)。

语种:中文

中文关键词:湾流区;黑潮区;爆发性气旋;热力强迫因子;诊断分析

外文关键词:gulf stream;Kuroshio;explosive cyclone;thermal forcing factors;diagnostic analysis

中文摘要:【目的】分析湾流区和黑潮区两个超强爆发性气旋在快速发展过程中热力强迫的作用差异。【方法】使用两种再分析数据,结合Zwack-Okossi诊断方程,对比分析热力强迫因子在两超强爆发性气旋发展中的空间结构特征和演变特征。【结果与结论】在两超强爆发性气旋快速发展的过程中,湾流区超强(SU-GS)爆发性气旋的水汽辐合和显热均弱于黑潮区超强(SU-KS)爆发性气旋。Zwack-Okossi方程诊断分析表明,非绝热加热是SU-GS爆发性气旋和SU-KS爆发性气旋爆发性发展的主要强迫因子,且主要分布于中低层,但非绝热加热的演变及贡献存在差异;在初始爆发时刻,SU-KS爆发性气旋的非绝热加热显著强于SU-GS爆发性气旋,且对其快速发展的贡献较大;至最大加深率时刻,SU-GS爆发性气旋的非绝热加热显著增强,是其快速发展的主导强迫因子,而SU-KS爆发性气旋的非绝热加热呈现减弱趋势,对其相对重要性减弱。

外文摘要:【Objective】To study the differences in thermal forcing factors during the rapid development of the two super explosive cyclones(ECs)over the Gulf Stream(SU-GS EC)and Kuroshio(SU-KS EC).【Method】The spatial structure and evolution of the thermal forcing factors are analyzed and compared by using the reanalysis data and Zwack-Okossi equation methods.【Result and Conclusion】During the rapid development of the two super ECs,the water vapor convergence and apparent heating of SU-GS EC are weaker than those of SU-KS EC.Diagnostic analysis of Zwack-Okossi equation reveals that the diabatic heating distributed mainly in the middle and low levels is the key factor for the explosive development of SU-GS EC and SU-KS EC.However,the evolution and contribution of diabatic heating are distinct at different explosive-developing stages.The diabatic heating of SU-KS EC is stronger than that of SU-GS EC at the initial-explosive-developing moment.At the maximum-deepening-rate moment,diabatic heating of SU-GS EC is the dominant forcing factor of its rapid development and it is remarkably enhanced.The diabatic heating of SU-KS EC shows a weakening trend,but still make a major contribution.

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