气候变化领域集成服务门户(CCPortal): (Table A1) Optical attenuation coefficients of glacier ice from 350-700 nm (West Greenland)

CCPortal

DOI	https://doi.pangaea.de/10.1594/PANGAEA.913508
	(Table A1) Optical attenuation coefficients of glacier ice from 350-700 nm (West Greenland)
	Cooper; Matthew G; Smith; Laurence C; Rennermalm; Asa K; Tedesco; Marco; Muthyala; Rohi; Leidman; Sasha Z; Moustafa; Samiah E; Fayne; Jessica V
发布日期	2020-03-16
数据集类型	dataset
英文关键词	Albedo ; attenuation coefficient ; extinction coefficient ; glacier ice ; ICESat-2 ; Lidar ; Mie theory ; subsurface melting ; transmittance ; two stream theory
英文简介	Optical attenuation coefficients of glacier ice from 350-700 nm were estimated from in-ice solar irradiance measured over the spectral range 350-900 nm and 12-77 cm depth collected at a site in the western Greenland ablation zone (67.15 °N, 50.02 °W). The acquired spectral irradiance measurements are used to calculate flux attenuation coefficients using an exponential decay Bouguer law model. Spectral absorption coefficients are estimated using the method of Warren et. al. (2006), which relates the attenuation coefficient to the absorption coefficient in the visible spectrum. The attenuation coefficients are in units of solid ice equivalent (m-1) referenced to 917 kg/m³. The ice density was measured in the field on an ice core extracted from the measurement location. The ice density was 699 kg/m³ from 0-8 cm depth, 801 kg/m³ from 4-45 cm , 883 kg/m³ from 45-74 cm, and 888 from 74-122 cm. The depth-weighted ice density in the region where attenuation was measured (12-77 cm) was 835 kg/m³. The reported coefficients are converted to solid ice equivalent values using the ratio 835/917. The field measurements were completed between 13:45 and 14:35 local time (UTC -3), at solar zenith angles of ~48–51°. Solar noon at this time and location is ~13:26.
空间范围	Latitude: 67.150000 * Longitude: -50.020000
语种	英语
国家	国际
学科大类	气候变化
学科子类	气候变化
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/215629
推荐引用方式 GB/T 7714	Cooper,Matthew G,Smith,et al. (Table A1) Optical attenuation coefficients of glacier ice from 350-700 nm (West Greenland).2020-03-16.https://doi.pangaea.de/10.1594/PANGAEA.913508.