气候变化领域集成服务门户(CCPortal): Influence of convection on stratospheric water vapor in the North American monsoon region

CCPortal

DOI	10.5194/acp-20-12153-2020
	Influence of convection on stratospheric water vapor in the North American monsoon region
	Yu W.; Dessler A.E.; Park M.; Jensen E.J.
发表日期	2020
ISSN	1680-7316
起始页码	12153
结束页码	12161
卷号	20 期号:20
英文摘要	We quantify the connection between deep convective occurrence and summertime 100 hPa water vapor anomaly over the North American (NA) region and find substantial consistency between their interannual variations and also that the water vapor mixing ratio over the NA region is up to ppmv higher when deep convection occurs. We use a Lagrangian trajectory model to demonstrate that the structure and the location of the NA anticyclone, as well as the tropical upper tropospheric temperature, mediate the moistening impact of convection. The deep convection mainly occurs over the Central Plains region. Most of the convectively moistened air is then transported to the center of the NA anticyclone, and the anticyclonic structure helps maintain high water vapor content there. This explains both the summer seasonal cycle and interannual variability of the convective moistening efficiency in the NA region and can provide valuable insight into modeling stratospheric water vapor. © 2020 Author(s).
语种	英语
scopus关键词	air temperature; annual variation; anticyclone; atmospheric convection; mixing ratio; monsoon; stratosphere; water vapor
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/247449
作者单位	Department of Atmospheric Sciences, Texas A & M University, College Station, TX, United States; National Center for Atmospheric Research, Boulder, CO, United States
推荐引用方式 GB/T 7714	Yu W.,Dessler A.E.,Park M.,et al. Influence of convection on stratospheric water vapor in the North American monsoon region[J],2020,20(20).
APA	Yu W.,Dessler A.E.,Park M.,&Jensen E.J..(2020).Influence of convection on stratospheric water vapor in the North American monsoon region.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(20).
MLA	Yu W.,et al."Influence of convection on stratospheric water vapor in the North American monsoon region".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.20(2020).