气候变化领域集成服务门户(CCPortal): Observations of cold-cloud properties in the Norwegian Arctic using ground-based and spaceborne lidar

CCPortal

DOI	10.5194/acp-22-9537-2022
	Observations of cold-cloud properties in the Norwegian Arctic using ground-based and spaceborne lidar
	Schafer, Britta; Carlsen, Tim; Hanssen, Ingrid; Gausa, Michael; Storelvmo, Trude
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	9537
结束页码	9551
卷号	22 期号:14 页码:15
英文摘要	The role of clouds in the surface radiation budget is particularly complex in the rapidly changing Arctic. However, despite their importance, long-term observations of Arctic clouds are relatively sparse. Here, we present observations of cold clouds based on 7 years (2011-2017) of ground-based lidar observations at the Arctic Lidar Observatory for Middle Atmosphere Research (ALOMAR) in Andenes in the Norwegian Arctic. In two case studies, we assess (1) the agreement between a co-located cirrus cloud observations from the ground-based lidar and the spaceborne lidar aboard the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) satellite and (2) the ground-based lidar's capability to determine the cloud phase in mixed-phase clouds from depolarization measurements. We then compute multiyear statistics of cold clouds from both platforms with respect to their occurrence, cloud top and base height, cloud top temperature, and thermodynamic phase for the 2011-2017 period. We find that satellite- and ground-based observations agree well with respect to the coincident cirrus measurement and that the vertical phase distribution within a liquid-topped mixed-phase cloud could be identified from depolarization measurements. On average, 8 % of all satellite profiles were identified as single-layer cold clouds with no apparent seasonal differences. The average cloud top and base heights, combining the ground-based and satellite measurements, are 9.1 and 6.9 km, respectively, resulting in an average thickness of 2.2 km. Seasonal differences between the average top and base heights are on the order of 1-2 km and are largest when comparing fall (highest) and spring (lowest). However, seasonal variations are small compared with the observed day-to-day variability. Cloud top temperatures agree well between both platforms, with warmer cloud top temperatures in summer. The presented study demonstrates the capabilities of long-term cloud observations in the Norwegian Arctic from the ground-based lidar at Andenes.
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:000829505000001
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/273014
作者单位	University of Oslo; Nord University
推荐引用方式 GB/T 7714	Schafer, Britta,Carlsen, Tim,Hanssen, Ingrid,et al. Observations of cold-cloud properties in the Norwegian Arctic using ground-based and spaceborne lidar[J],2022,22(14):15.
APA	Schafer, Britta,Carlsen, Tim,Hanssen, Ingrid,Gausa, Michael,&Storelvmo, Trude.(2022).Observations of cold-cloud properties in the Norwegian Arctic using ground-based and spaceborne lidar.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(14),15.
MLA	Schafer, Britta,et al."Observations of cold-cloud properties in the Norwegian Arctic using ground-based and spaceborne lidar".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.14(2022):15.