气候变化领域集成服务门户(CCPortal): Climatology of Melting Layer Heights Estimated From Cloud Radar Observations at Various Locations

CCPortal

DOI	10.1029/2021JD034816
	Climatology of Melting Layer Heights Estimated From Cloud Radar Observations at Various Locations
	Song J.I.; Yum S.S.; Park S.-H.; Kim K.-H.; Park K.-J.; Joo S.-W.
发表日期	2021
ISSN	2169-897X
卷号	126 期号:17
英文摘要	A melting layer (ML) detection algorithm for cloud radar with polarimetric capability was developed and applied to the cloud radar data collected from five different sites around the world for several years. The retrieved melting layer top height (MLH) showed a very good correspondence with the ECMWF Reanalysis 5 zero degree level data for all five sites. The ML characteristics were distinctively different for different sites, revealing climatological characteristics of ML forming clouds in different regions. Generally, ML tended to occur more frequently in summer than in winter except for a maritime site, where low stratiform clouds formed frequently in summer, the top of which might be lower than the freezing level. In contrast, at two Arctic sites, ML occurred almost exclusively in summer because it was too cold to have an ML in the other seasons. The MLH also varied significantly from site to site but generally was higher during warmer seasons. Based on MLH, two new indices, bulk temperature lapse rate (BLR) and relative depth (RD) of liquid cloud below MLH (RD) were developed, which were useful to explain the environmental characteristics of the five sites. BLR generally increased with the surface temperature at all sites except at the marine site that showed an opposite trend, where a unique synoptic pattern in winter generated high BLR in this cold season. These findings confirm that studies on thermodynamic structures using cloud radars can be broadened, taking advantage of BLR and RD information, as these indices can represent environmental thermodynamic characteristics of the clouds that have ML. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	cloud climatology; cloud radar; melting layer
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/237042
作者单位	Department of Atmospheric Sciences, Yonsei University, Seoul, South Korea; Department of Future & Smart Construction Research, Korea Institute of Civil Engineering and Building Technology (KICT), Gyeonggi-do, South Korea; National Institute of Meteorological Sciences, Korea Meteorological Administration, Jeju-do, South Korea
推荐引用方式 GB/T 7714	Song J.I.,Yum S.S.,Park S.-H.,et al. Climatology of Melting Layer Heights Estimated From Cloud Radar Observations at Various Locations[J],2021,126(17).
APA	Song J.I.,Yum S.S.,Park S.-H.,Kim K.-H.,Park K.-J.,&Joo S.-W..(2021).Climatology of Melting Layer Heights Estimated From Cloud Radar Observations at Various Locations.Journal of Geophysical Research: Atmospheres,126(17).
MLA	Song J.I.,et al."Climatology of Melting Layer Heights Estimated From Cloud Radar Observations at Various Locations".Journal of Geophysical Research: Atmospheres 126.17(2021).