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DOI	10.1029/2020GL087909
	Can Quasi-Periodic Gravity Waves Influence the Shape of Ice Crystals in Cirrus Clouds?
	Saha S.; Niranjan Kumar K.; Sharma S.; Kumar P.; Joshi V.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:11
英文摘要	The present work, for the first time, unravels the impact of mesoscale gravity waves on the microphysical changes in cirrus clouds over the subtropical Indian region using Raman lidar, satellite, model simulations, and reanalysis data sets. The cirrus clouds are formed from the convective outflow of large-scale convergence zone extending from south-west to north-east Indian region. These clouds are modulated by the upward propagating gravity waves with time periods ~40 and ~20 min over the Raman lidar observational site. The wave-induced enhancement of moisture leads to supersaturation thereby controlling the ice crystals' size and shape through depositional freezing. The ice crystals size increases, and they transform to irregular shapes in the presence of wave activity. Therefore, the present work is novel and will have implications toward the uncertainties associated with cirrus clouds in both regional and global climate models. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Climate models; Crystals; Gravity waves; Ice; Optical radar; Convergence zones; Global climate model; Irregular shape; Model simulation; Quasi-periodic; Size and shape; Upward propagating gravity waves; Wave activity; Clouds; cirrus; climate modeling; cloud microphysics; data set; global climate; gravity wave; ice crystal; lidar; mesoscale meteorology; Raman spectroscopy; satellite altimetry; subtropical region; wave propagation; India
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170268
作者单位	Physical Research Laboratory, Ahmedabad, India; National Centre for Medium Range Weather Forecasting, Ministry of Earth Sciences, India; Space Applications Centre, Ahmedabad, India
推荐引用方式 GB/T 7714	Saha S.,Niranjan Kumar K.,Sharma S.,et al. Can Quasi-Periodic Gravity Waves Influence the Shape of Ice Crystals in Cirrus Clouds?[J],2020,47(11).
APA	Saha S.,Niranjan Kumar K.,Sharma S.,Kumar P.,&Joshi V..(2020).Can Quasi-Periodic Gravity Waves Influence the Shape of Ice Crystals in Cirrus Clouds?.Geophysical Research Letters,47(11).
MLA	Saha S.,et al."Can Quasi-Periodic Gravity Waves Influence the Shape of Ice Crystals in Cirrus Clouds?".Geophysical Research Letters 47.11(2020).