Differences in snow-induced radiative forcing estimated from satellite and reanalysis surface albedo datasets over the Northern Hemisphere landmass for the overlapping period of 1982–2012

doi:10.1088/2515-7620/abb3b8

	Differences in snow-induced radiative forcing estimated from satellite and reanalysis surface albedo datasets over the Northern Hemisphere landmass for the overlapping period of 1982–2012
	Xiaona,Chen 2; Shunlin,Liang 1; Yaping,Yang 2
刊名	Environmental Research Communications
	2020-09-01
卷号	2 期号:9
关键词	snow cover land surface albedo Northern Hemisphere energy budget radiative forcing
DOI	10.1088/2515-7620/abb3b8
通讯作者	Xiaona,Chen()
英文摘要	Abstract The snow-induced radiative forcing (SnRF) measures the instantaneous perturbation to Earth’s shortwave radiation at the top of the atmosphere (TOA) caused by the presence of snow cover. Land surface albedo (as) is a key parameter in estimation of SnRF. Previous studies have focused on using satellite or reanalysis as data in SnRF quantifications. However, their spatial and temporal differences remain unclear. In this study, SnRF over the Northern Hemisphere (NH) estimates from two satellite and four reanalysis as datasets were compared for the overlapping period of 1982–2012. The 31-year annual-mean SnRF was estimated at ?1.81 to ?1.59 W m?2 from satellite as datasets, with a peak of ?4.01 W m?2 and Standard Deviation (SD) of 1.54 W m?2 in April. The comparable SnRF from reanalysis as was ?1.48 to ?2.30 W m?2, with a peak of ?4.77 W m?2 and SD of 0.81 W m?2 in the same month. In the seasonal cycle, SnRF from satellite as displayed lower values from October to January, but higher values from February to July, compared with SnRF using reanalysis as. Moreover, the annual-mean SnRF declined by 0.39–1.25 W m?2 during 1982–2012 from satellite as datasets, which is much smaller than the results using reanalysis as datasets. Furthermore, changes in monthly-mean SnRF from satellite as displayed an enhance trend in snow accumulation seasons, which are largely different with the comparable changes from reanalysis-based SnRF, indicating that there are large interannual and intra-annual biases between SnRF estimates from satellite and reanalysis as datasets. Based on above results, we conclude that the large discrepancies between SnRF estimations from satellite and reanalysis as should be considered in evaluating the response and feedback of snow cover to Earth climate change in future studies, especially in radiation budget anomalies.
语种	英语
出版者	IOP Publishing
WOS记录号	IOP:2515-7620-2-9-ABB3B8
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/156745]
专题	中国科学院地理科学与资源研究所
通讯作者	Xiaona,Chen
作者单位	1.Department of Geographical Sciences, University of Maryland, College Park 20740, United States of America 2.State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, People’s Republic of China
推荐引用方式 GB/T 7714	Xiaona,Chen,Shunlin,Liang,Yaping,Yang. Differences in snow-induced radiative forcing estimated from satellite and reanalysis surface albedo datasets over the Northern Hemisphere landmass for the overlapping period of 1982–2012[J]. Environmental Research Communications,2020,2(9).
APA	Xiaona,Chen,Shunlin,Liang,&Yaping,Yang.(2020).Differences in snow-induced radiative forcing estimated from satellite and reanalysis surface albedo datasets over the Northern Hemisphere landmass for the overlapping period of 1982–2012.Environmental Research Communications,2(9).
MLA	Xiaona,Chen,et al."Differences in snow-induced radiative forcing estimated from satellite and reanalysis surface albedo datasets over the Northern Hemisphere landmass for the overlapping period of 1982–2012".Environmental Research Communications 2.9(2020).