DOI: 10.1175/JCLI-D-11-00078.1
Scopus记录号: 2-s2.0-84858256145
论文题名: Improved sea ice shortwave radiation physics in CCSM4: The impact of melt ponds and aerosols on Arctic sea ice
作者: Holland M.M. ; Bailey D.A. ; Briegleb B.P. ; Light B. ; Hunke E.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2012
卷: 25, 期: 5 起始页码: 1413
结束页码: 1430
语种: 英语
Scopus关键词: Aerosol deposition
; Aerosol effect
; Albedo
; Antarctic sea ice
; Arctic ice
; Arctic sea ice
; Community climate system model
; Ice cover
; Inherent optical properties
; Kara Sea
; Melt ponds
; Pre-industrial
; Radiative forcings
; Radiative impacts
; Scattering and absorption
; Short-wave radiation
; Surface albedo
; Surface meltwater
; Atmospheric aerosols
; Atmospheric radiation
; Carbon dioxide
; Climate models
; Lakes
; Radiative transfer
; Respiratory mechanics
; Solar radiation
; Sea ice
; absorption coefficient
; aerosol
; albedo
; climate modeling
; computer simulation
; meltwater
; parameterization
; radiative forcing
; radiative transfer
; sea ice
; shortwave radiation
; snow
; twentieth century
; Arctic Ocean
英文摘要: The Community Climate System Model, version 4 has revisions across all components. For sea ice, the most notable improvements are the incorporation of a new shortwave radiative transfer scheme and the capabilities that this enables. This scheme uses inherent optical properties to define scattering and absorption characteristics of snow, ice, and included shortwave absorbers and explicitly allows for melt ponds and aerosols. The deposition and cycling of aerosols in sea ice is now included, and a new parameterization derives ponded water from the surface meltwater flux. Taken together, this provides a more sophisticated, accurate, and complete treatment of sea ice radiative transfer. In preindustrial CO 2 simulations, the radiative impact of ponds and aerosols on Arctic sea ice is 1.1 W m -2 annually, with aerosols accounting for up to 8 W m -2 of enhanced June shortwave absorption in the Barents and Kara Seas and with ponds accounting for over 10 W m -2 in shelf regions in July. In double CO 2 (2XCO 2) simulations with the same aerosol deposition, ponds have a larger effect, whereas aerosol effects are reduced, thereby modifying the surface albedo feedback. Although the direct forcing is modest, because aerosols and ponds influence the albedo, the response is amplified. In simulations with no ponds or aerosols in sea ice, the Arctic ice is over 1 m thicker and retains more summer ice cover. Diagnosis of a twentieth-century simulation indicates an increased radiative forcing from aerosols and melt ponds, which could play a role in twentieth-century Arctic sea ice reductions. In contrast, ponds and aerosol deposition have little effect on Antarctic sea ice for all climates considered. © 2012 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52540
Appears in Collections: 气候变化事实与影响
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作者单位: National Center for Atmospheric Research, Boulder, CO, United States; University of Washington, Seattle, WA, United States; Los Alamos National Laboratory, Los Alamos, NM, United States
Recommended Citation:
Holland M.M.,Bailey D.A.,Briegleb B.P.,et al. Improved sea ice shortwave radiation physics in CCSM4: The impact of melt ponds and aerosols on Arctic sea ice[J]. Journal of Climate,2012-01-01,25(5)