DOI: 10.1175/JCLI-D-14-00389.1
Scopus记录号: 2-s2.0-84922989514
论文题名: Assessment of sea ice albedo radiative forcing and feedback over the Northern Hemisphere from 1982 to 2009 using satellite and reanalysis data
作者: Cao Y. ; Liang S. ; Chen X. ; He T.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2015
卷: 28, 期: 3 起始页码: 1248
结束页码: 1259
语种: 英语
Scopus关键词: Atmospheric radiation
; Climate change
; Satellites
; Sea ice
; Solar radiation
; Clouds and the Earth's radiant energy systems
; Ice albedo feedback
; Kernel methods
; Northern hemisphere
; Northern Hemispheres
; Radiative forcings
; Top of atmospheres
; Warming climate
; Ice
; albedo
; climate change
; climate feedback
; Northern Hemisphere
; radiative forcing
; satellite data
; sea ice
; Arctic
; Arctic Ocean
英文摘要: The decreasing surface albedo caused by continuously retreating sea ice over Arctic plays a critical role in Arctic warming amplification. However, the quantification of the change in radiative forcing at top of atmosphere (TOA) introduced by the decreasing sea ice albedo and its feedback to the climate remain uncertain. In this study, based on the satellite-retrieved long-term surface albedo product CLARA-A1 (Cloud, Albedo, and Radiation dataset, AVHRR-based, version 1) and the radiative kernel method, an estimated 0.206±0.05Wm-2 sea ice radiative forcing (SIRF) has decreased in the Northern Hemisphere (NH) owing to the loss of sea ice from 1982 to 2009, yielding a sea ice albedo feedback (SIAF) of 0.25Wm-2K-1 for the NH and 0.19Wm-2K-1 for the entire globe. These results are lower than the estimate from another method directly using the Clouds and the Earth's Radiant Energy System (CERES) broadband planetary albedo. Further data analysis indicates that kernel method is likely to underestimate the change in all-sky SIRF because all-sky radiative kernels mask too much of the effect of sea ice albedo on the variation of cloudy albedo. By applying an adjustment with CERES-based estimate, the change in all-sky SIRF over the NH was corrected to 0.33±0.09Wm-2, corresponding to a SIAF of 0.43Wm-2K-1 for NH and 0.31Wm-2K-1 for the entire globe. It is also determined that relative to satellite surface albedo product, two popular reanalysis products, ERA-Interim and MERRA, severely underestimate the changes in NHSIRF in melt season (May- August) from 1982 to 2009 and the sea ice albedo feedback to warming climate. © 2015 American Meteorological Society. 资助项目: NASA, National Aeronautics and Space Administration
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50423
Appears in Collections: 气候变化事实与影响
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作者单位: State Key Laboratory of Remote Sensing Science, College of Global Change and Earth System Science, Beijing Normal University, Beijing, China; Department of Geographical Sciences, University of Maryland, College Park, College Park, MD, United States
Recommended Citation:
Cao Y.,Liang S.,Chen X.,et al. Assessment of sea ice albedo radiative forcing and feedback over the Northern Hemisphere from 1982 to 2009 using satellite and reanalysis data[J]. Journal of Climate,2015-01-01,28(3)