气候变化领域集成服务门户(CCPortal): Modelling radiative transfer through ponded first-year Arctic sea ice with a plane-parallel model

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DOI	10.5194/tc-11-2137-2017
	Modelling radiative transfer through ponded first-year Arctic sea ice with a plane-parallel model
	Taskjelle T.; Hudson S.R.; Granskog M.A.; Hamre B.
发表日期	2017
ISSN	19940416
卷号	11 期号:5
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).
学科领域	albedo; environmental modeling; heating; irradiance; pack ice; radiative transfer; scattering; sea ice; solar radiation; transmittance; Arctic; Arctic Ocean; Svalbard; Svalbard and Jan Mayen
语种	英语
scopus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
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119335
作者单位	Department of Physics and Technology, University of Bergen, Allégaten 55, Bergen, Norway; Norwegian Polar Institute, Fram Centre, Tromsø, Norway
推荐引用方式 GB/T 7714	Taskjelle T.,Hudson S.R.,Granskog M.A.,et al. Modelling radiative transfer through ponded first-year Arctic sea ice with a plane-parallel model[J],2017,11(5).
APA	Taskjelle T.,Hudson S.R.,Granskog M.A.,&Hamre B..(2017).Modelling radiative transfer through ponded first-year Arctic sea ice with a plane-parallel model.Cryosphere,11(5).
MLA	Taskjelle T.,et al."Modelling radiative transfer through ponded first-year Arctic sea ice with a plane-parallel model".Cryosphere 11.5(2017).