“风云英华”学术讲座第三十七期 陈兴超助理教授


发布时间:2020-11-16浏览次数:25



报告题目:The roles of different convective systems in the monsoonal overturning circulation

报告人:陈兴超  助理教授

时间:20201120日,周五上午900—1030

报告摘要:

This study investigates the relative roles of different convective systems in the atmospheric overturning circulation of the South Asian summer monsoon (SASM). A cloud classification and tracking technique is used to decompose a convection-permitting SASM simulation into the clear sky, shallow convection, congestus, isolated deep convection, and mesoscale convective system (MCS) regimes. The statistical properties of simulated convective systems are compared with satellite observations and atmospheric reanalysis. Results show that the convection-permitting simulation realistically captured the spatiotemporal distributions and rainfall characteristics of the SASM convective systems. An isentropic analysis technique is then adopted to examine the relative contributions of different convective systems to the total monsoonal overturning circulation. Analyses indicate that MCSs play a crucial role in the total vertical mass, water, and energy transports during the SASM. In addition, the per event vertical transports associated with MCSs is around 70-100 times stronger than that associate with isolated deep convection. The vertical mass and energy transports associated with MCSs and isolated deep convection peaking in the upper troposphere, which are mostly contributed by updrafts over stratiform region, and also partially contributed by deep convective updrafts. Below the melting level, MCSs and congestus show larger contributions to the total vertical mass, water, and energy transports than the other convective systems. The vertical transports produced by shallow convection are mostly confined below 2 km. The subseasonal variability of vertical mass, water, and energy transports associated with different convective systems are further studied. The overturningsassociated with MCSs show stronger subseasonal variability than that associated with the other convective systems.

报告人简介:

陈兴超,宾夕法尼亚州立大学助理教授。主要从事热带气象、中小尺度气象以及资料同化方面的研究。2011年本科毕业于南京信息工程大学大气科学学院。2016年博士毕业于南京大学大气科学学院并获江苏省优秀博士论文。20162017年于纽约大学从事博士后研究。目前主持美国国家大气海洋局(NOAA)、能源部(DOE)、海军研究院(ONR)项目各一项。共同主持美国国家科学基金(NSF)和国家大气海洋局(NOAA)项目各一项。另参与其它多项国际联合研究计划以及大型野外观测实验。担任美国国家科学基金项目及10余个专业SCI期刊评审人。在包括“GRL”、“JGR”、“JAS”、“JC”、“MWR”、“BAMS”、“JAMES”、“ACP”、“CD”等国际权威SCI期刊发表学术论文27篇。

以下为腾讯会议邀请信息:

会议主题:“风云英华”学术讲座第三十七期陈兴超助理教授

会议时间:2020/11/20 09:00-10:30

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https://meeting.tencent.com/s/I5LSeyN27CJW

会议 ID811 732 990

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    江苏省南京市栖霞区仙林大道163号
    210023