DOI: 10.5194/tc-11-2137-2017
Scopus记录号: 2-s2.0-85025688275
论文题名: Modelling radiative transfer through ponded first-year Arctic sea ice with a plane-parallel model
作者: Taskjelle T ; , Hudson S ; R ; , Granskog M ; A ; , Hamre B
刊名: Cryosphere
ISSN: 19940416
出版年: 2017
卷: 11, 期: 5 起始页码: 2137
结束页码: 2148
语种: 英语
英文关键词: albedo
; environmental modeling
; heating
; irradiance
; pack ice
; radiative transfer
; scattering
; sea ice
; solar radiation
; transmittance
; Arctic
; Arctic Ocean
; Svalbard
; Svalbard and Jan Mayen
英文摘要: Under-ice irradiance measurements were done on ponded first-year pack ice along three transects during the ICE12 expedition north of Svalbard. Bulk transmittances (400-900 nm) were found to be on average 0.15-0.20 under bare ice, and 0.39-0.46 under ponded ice. Radiative transfer modelling was done with a plane-parallel model. While simulated transmittances deviate significantly from measured transmittances close to the edge of ponds, spatially averaged bulk transmittances agree well. That is, transect-average bulk transmittances, calculated using typical simulated transmittances for ponded and bare ice weighted by the fractional coverage of the two surface types, are in good agreement with the measured values. Radiative heating rates calculated from model output indicates that about 20% of the incident solar energy is absorbed in bare ice, and 50% in ponded ice (35% in pond itself, 15% in the underlying ice). This large difference is due to the highly scattering surface scattering layer (SSL) increasing the albedo of the bare ice. © 2017 Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75503
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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作者单位: Department of Physics and Technology, University of Bergen, Allégaten 55, Bergen, Norway; Norwegian Polar Institute, Fram Centre, Tromsø, Norway
Recommended Citation:
Taskjelle T,, Hudson S,R,et al. Modelling radiative transfer through ponded first-year Arctic sea ice with a plane-parallel model[J]. Cryosphere,2017-01-01,11(5)