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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 ( IF 2.9 ) Pub Date : 2020-09-15 , DOI: 10.1088/2515-7620/abb3b8
Chen Xiaona 1 , Liang Shunlin 2 , Yang Yaping 1
Affiliation  

The snow-induced radiative forcing (S n RF) 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 ( a s ) is a key parameter in estimation of S n RF. Previous studies have focused on using satellite or reanalysis a s data in S n RF quantifications. However, their spatial and temporal differences remain unclear. In this study, S n RF over the Northern Hemisphere (NH) estimates from two satellite and four reanalysis a s datasets were compared for the overlapping period of 1982–2012. The 31-year annual-mean S n RF was estimated at −1.81 to −1.59 W m −2 from satellite a s datasets, with a peak of −4.01 W m −2 and Standard Deviation (SD) of 1.54 W m −2 in April. The comparable S n RF from reanalysis a s was...

中文翻译:

根据卫星和再分析地表反照率数据集估算的北半球1982-2012年重叠期雪致辐射强迫的差异

积雪引起的辐射强迫(S n RF)测量由积雪的存在引起的对大气顶部(TOA)的地球短波辐射的瞬时扰动。地表反照率(as)是估算S n RF的关键参数。先前的研究集中在使用卫星或再分析作为S n RF量化中的数据。但是,它们的时空差异仍然不清楚。在这项研究中,比较了北半球(NH)从两颗卫星和四次重新分析得出的S n RF数据集,比较了1982-2012年的重叠期。来自卫星的31年年平均S n RF估计为-1.81至-1.59 W m -2,峰值为-4.01 W m -2且标准偏差(SD)为1.54 W m -2。四月。通过重新分析获得的S n RF可比性...
更新日期:2020-09-16
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