一次典型层积云发展-消亡过程对东海黑潮海洋锋响应的个例研究  

A Case Study of Stratocumulus Cloud Responses to the Kuroshio Sea Surface Temperature Front in the East China Sea

作　　者：张志伟[1,2] 李昀英[1] 陈广超 Zhang Zhiwei;LI Yunying;Chen Guangchao(College of Meteorology and Oceanography,National University of Defense Technology,Changsha 410073,China;Unit No.92192 Chinese People′s Liberotion Army,Ningbo 31500,China)

机构地区：[1]国防科技大学气象海洋学院,湖南长沙410073 [2]中国人民解放军92192部队,浙江宁波315000

出　　处：《中国海洋大学学报（自然科学版）》2021年第9期1-7,共7页Periodical of Ocean University of China

基　　金：国家自然科学基金项目(42075077);国家重点研究发展计划专项(2018YFC1507604)资助。

摘　　要：基于ERA5再分析资料和卫星观测资料,本文揭示了2010年3月9—11日一次层积云发展-消亡过程中东海黑潮海洋温度锋对其的影响机制。研究发现,在层积云的发展阶段,海洋锋通过垂直混合机制影响层积云;而在维持阶段,海洋锋通过气压调整机制影响层积云;在消亡阶段,海洋锋对云的影响较弱。进一步研究表明,海洋锋能影响层积云的垂直结构,在维持阶段层积云的云底/顶高度在冷(暖)洋面下降(抬升),这对应于海洋锋强迫出的下沉(上升)气流。该结果说明东海黑潮海洋锋对大气行星边界层和层积云的垂直结构具有不可忽视的影响。The influence of the Kuroshio sea surface temperature front(SSTF)on stratocumulus clouds was studied based on satellite observations on 9~11 March,2010 in the East China Sea.Stratocumulus cloud.were influenced by SSTF through the vertical mixing mechanism during the development stage,while through the sea level pressure adjustment mechanism during the maintenance stage,and the influence of the SSTF on air was quite weak during the dissipation stage.Furthermore,we found that the vertical structure can be influenced by the SSTF.The increase(decrease)of cloud base/top height was corresponding to the updraft(downdraft)forced by the SSTF in the warm(cold)side of the front during the maintenance stage.The result directly shows that the Kuroshio SSTF has a very important influence on the planetary boundary layer and the vertical structure of stratocumulus clouds.

关 键 词：层积云 黑潮 海洋锋 响应机制 

分 类 号：P47[天文地球—大气科学及气象学]