气候变化领域集成服务门户(CCPortal): Distribution of cross-tropopause convection within the Asian monsoon regionfrom May through October 2017

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DOI	10.5194/acp-23-3279-2023
	Distribution of cross-tropopause convection within the Asian monsoon regionfrom May through October 2017
	Clapp, Corey E.; Smith, Jessica B.; Bedka, Kristopher M.; Anderson, James G.
发表日期	2023
ISSN	1680-7316
EISSN	1680-7324
起始页码	3279
结束页码	3298
卷号	23 期号:5 页码:20
英文摘要	We constructed a database of cross-tropopause convection in the Asian monsoon region for the months of May through October of 2017 using overshooting tops (OTs), deep convective features that penetrate the local cirrus anvil layer and the local tropopause, with Meteosat-8 geostationary satellite detections. The database of 40 918 OTs represents a hemispheric record of convection covering the study domain from 10 degrees S to 55?degrees N and from 40 to 115 degrees E. With this database, we analyzed the geographic, monthly, and altitude distribution of this convection and compared it to the convective distributions represented by satellite observations of outgoing longwave radiation (OLR) and precipitation. We find that cross-tropopause convection is most active during the months of May through August (with daily averages of these months above 300 OTs per day) and declines through September and October. Most of this convection occurs within Northern India and Southern India, the Bay of Bengal, and the Indian Ocean regions, which together account for 75.1 % of all OTs. We further identify distinct, differing seasonal trends within the study subregions. For the Northern India, Southern India, and Bay of Bengal regions, the distribution of OTs follows the development of the Asian monsoon, with its north-south movement across the study period. This work demonstrates that when evaluating the effects of convection on lower stratospheric composition over the Asian monsoon region, it is important to consider the impact of cross-tropopause convection specifically, as well as the contributions from both land-based and oceanic regions due to the significant geographic and monthly variation in convective activity.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000949876300001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273378
作者单位	Harvard University; National Aeronautics & Space Administration (NASA); NASA Langley Research Center; Harvard University; Harvard University
推荐引用方式 GB/T 7714	Clapp, Corey E.,Smith, Jessica B.,Bedka, Kristopher M.,et al. Distribution of cross-tropopause convection within the Asian monsoon regionfrom May through October 2017[J],2023,23(5):20.
APA	Clapp, Corey E.,Smith, Jessica B.,Bedka, Kristopher M.,&Anderson, James G..(2023).Distribution of cross-tropopause convection within the Asian monsoon regionfrom May through October 2017.ATMOSPHERIC CHEMISTRY AND PHYSICS,23(5),20.
MLA	Clapp, Corey E.,et al."Distribution of cross-tropopause convection within the Asian monsoon regionfrom May through October 2017".ATMOSPHERIC CHEMISTRY AND PHYSICS 23.5(2023):20.