DOI: 10.5194/tc-11-2867-2017
Scopus记录号: 2-s2.0-85038410270
论文题名: Optical properties of sea ice doped with black carbon -An experimental and radiative-Transfer modelling comparison
作者: Marks A ; A ; , Lamare M ; L ; , King M ; D
刊名: Cryosphere
ISSN: 19940416
出版年: 2017
卷: 11, 期: 6 起始页码: 2867
结束页码: 2881
语种: 英语
英文关键词: albedo
; atmospheric modeling
; black carbon
; comparative study
; experimental study
; nadir
; optical property
; particulate matter
; radiative transfer
; reflectivity
; sea ice
; simulator
英文摘要: Radiative-Transfer calculations of the light reflectivity and extinction coefficient in laboratory-generated sea ice doped with and without black carbon demonstrate that the radiative-Transfer model TUV-snow can be used to predict the light reflectance and extinction coefficient as a function of wavelength. The sea ice is representative of first-year sea ice containing typical amounts of black carbon and other light-Absorbing impurities. The experiments give confidence in the application of the model to predict albedo of other sea ice fabrics. Sea ices, 30 cm thick, were generated in the Royal Holloway Sea Ice Simulator (-2000 L tanks) with scattering cross sections measured between 0.012 and 0.032m2 kg-1 for four ices. Sea ices were generated with and without -5 cm upper layers containing particulate black carbon. Nadir reflectances between 0.60 and 0.78 were measured along with extinction coefficients of 0.1 to 0.03 cm-1 (e- folding depths of 10-30 cm) at a wavelength of 500 nm. Values were measured between light wavelengths of 350 and 650 nm. The sea ices generated in the Royal Holloway Sea Ice Simulator were found to be representative of natural sea ices. Particulate black carbon at mass ratios of -75, -150 and -300ngg-1 in a 5 cm ice layer lowers the albedo to 97, 90 and 79% of the reflectivity of an undoped "clean" sea ice (at a wavelength of 500 nm). © Author(s) 2017. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75461
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 Earth Sciences, Royal Holloway University of London, Egham, Surrey, United Kingdom
Recommended Citation:
Marks A,A,, Lamare M,et al. Optical properties of sea ice doped with black carbon -An experimental and radiative-Transfer modelling comparison[J]. Cryosphere,2017-01-01,11(6)