Influence of convection on stratospheric water vapor in the North American Monsoon region

doi:10.5194/acp-2020-405

GSTDTAP > 地球科学

DOI	10.5194/acp-2020-405
	Influence of convection on stratospheric water vapor in the North American Monsoon region
	Wandi Yu, Andrew Dessler, Mijeong Park, and Eric Jensen
	2020-05-15
发表期刊	Atmospheric Chemistry and Physics
出版年	2020
英文摘要	We quantify the connection between deep convection occurrence and summertime 100-hPa water vapor anomaly over the North America (NA) region and find substantial consistency of their interannual variations and that the water vapor mixing ratio over the NA region is up to ~ 1 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, determine how much contribution the deep convection could make to moistening the lower stratosphere. The deep convection mainly occurs over the Central Plains region, and 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. Our hypothesis explains both the summer seasonal cycle and interannual variability of the convective moistening efficiency in the NA region, and can provide valuable insight on modeling stratospheric water vapor.
领域	地球科学
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文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/267571
专题	地球科学
推荐引用方式 GB/T 7714	Wandi Yu, Andrew Dessler, Mijeong Park, and Eric Jensen. Influence of convection on stratospheric water vapor in the North American Monsoon region[J]. Atmospheric Chemistry and Physics,2020.
APA	Wandi Yu, Andrew Dessler, Mijeong Park, and Eric Jensen.(2020).Influence of convection on stratospheric water vapor in the North American Monsoon region.Atmospheric Chemistry and Physics.
MLA	Wandi Yu, Andrew Dessler, Mijeong Park, and Eric Jensen."Influence of convection on stratospheric water vapor in the North American Monsoon region".Atmospheric Chemistry and Physics (2020).