Optical attenuation coefficients of glacier ice from 350-700 nm and raw irradiance values from 350-900 nm
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 12-124 cm depth collected at a site in the western Greenland ablation zone (67.15 oN, 50.02 oW). The acquired spectral irradiance measurements a...
Main Authors: | , , , , , , , |
---|---|
Format: | Other/Unknown Material |
Language: | English |
Published: |
PANGAEA
2021
|
Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.930278 https://doi.org/10.1594/PANGAEA.930278 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.930278 |
---|---|
record_format |
openpolar |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.930278 2024-09-15T18:07:45+00:00 Optical attenuation coefficients of glacier ice from 350-700 nm and raw irradiance values from 350-900 nm Cooper, Matthew G Smith, Laurence C Rennermalm, Asa K Tedesco, Marco Muthyala, Rohi Leidman, Sasha Z Moustafa, Samiah E Fayne, Jessica V LATITUDE: 67.150000 * LONGITUDE: -50.020000 * DATE/TIME START: 2018-07-20T00:00:00 * DATE/TIME END: 2018-07-21T00:00:00 2021 application/zip, 4 datasets https://doi.pangaea.de/10.1594/PANGAEA.930278 https://doi.org/10.1594/PANGAEA.930278 en eng PANGAEA Cooper, Matthew G; Smith, Laurence C; Rennermalm, Asa K; Tedesco, Marco; Muthyala, Rohi; Leidman, Sasha Z; Moustafa, Samiah E; Fayne, Jessica V (2021): Spectral attenuation coefficients from measurements of light transmission in bare ice on the Greenland Ice Sheet. The Cryosphere, 15(4), 1931-1953, https://doi.org/10.5194/tc-15-1931-2021 Cooper, Matthew G (2021): mgcooper/imcrt: v1.0. Zenodo, https://doi.org/10.5281/zenodo.4579073 https://doi.pangaea.de/10.1594/PANGAEA.930278 https://doi.org/10.1594/PANGAEA.930278 CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess Albedo attenuation coefficient extinction coefficient glacier ice ICESat-2 Lidar Mie theory subsurface melting transmittance two stream theory dataset bundled publication 2021 ftpangaea https://doi.org/10.1594/PANGAEA.93027810.5194/tc-15-1931-202110.5281/zenodo.4579073 2024-07-24T02:31:21Z 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 12-124 cm depth collected at a site in the western Greenland ablation zone (67.15 oN, 50.02 oW). The acquired spectral irradiance measurements are used to calculate irradiance (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 calculated with linear regression between ice thickness in units of solid ice equivalent referenced to 917 kg/m3 and co-located transmittance. Solid ice equivalent thickness is calculated from in-situ ice density 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 kg/m3 from 74-122 cm. The depth-weighted ice density in the regions where attenuation was measured was 835 kg/m3 (12-77 cm) and 855 kg/m3 (53-124 cm). The field measurements were completed between 13:45 and 14:35 local time (UTC -3), at solar zenith angles of ~48–51o. Solar noon at this time and location is ~13:26. Other/Unknown Material glacier Greenland ice core The Cryosphere PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-50.020000,-50.020000,67.150000,67.150000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Albedo attenuation coefficient extinction coefficient glacier ice ICESat-2 Lidar Mie theory subsurface melting transmittance two stream theory |
spellingShingle |
Albedo attenuation coefficient extinction coefficient glacier ice ICESat-2 Lidar Mie theory subsurface melting transmittance two stream theory Cooper, Matthew G Smith, Laurence C Rennermalm, Asa K Tedesco, Marco Muthyala, Rohi Leidman, Sasha Z Moustafa, Samiah E Fayne, Jessica V Optical attenuation coefficients of glacier ice from 350-700 nm and raw irradiance values from 350-900 nm |
topic_facet |
Albedo attenuation coefficient extinction coefficient glacier ice ICESat-2 Lidar Mie theory subsurface melting transmittance two stream theory |
description |
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 12-124 cm depth collected at a site in the western Greenland ablation zone (67.15 oN, 50.02 oW). The acquired spectral irradiance measurements are used to calculate irradiance (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 calculated with linear regression between ice thickness in units of solid ice equivalent referenced to 917 kg/m3 and co-located transmittance. Solid ice equivalent thickness is calculated from in-situ ice density 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 kg/m3 from 74-122 cm. The depth-weighted ice density in the regions where attenuation was measured was 835 kg/m3 (12-77 cm) and 855 kg/m3 (53-124 cm). The field measurements were completed between 13:45 and 14:35 local time (UTC -3), at solar zenith angles of ~48–51o. Solar noon at this time and location is ~13:26. |
format |
Other/Unknown Material |
author |
Cooper, Matthew G Smith, Laurence C Rennermalm, Asa K Tedesco, Marco Muthyala, Rohi Leidman, Sasha Z Moustafa, Samiah E Fayne, Jessica V |
author_facet |
Cooper, Matthew G Smith, Laurence C Rennermalm, Asa K Tedesco, Marco Muthyala, Rohi Leidman, Sasha Z Moustafa, Samiah E Fayne, Jessica V |
author_sort |
Cooper, Matthew G |
title |
Optical attenuation coefficients of glacier ice from 350-700 nm and raw irradiance values from 350-900 nm |
title_short |
Optical attenuation coefficients of glacier ice from 350-700 nm and raw irradiance values from 350-900 nm |
title_full |
Optical attenuation coefficients of glacier ice from 350-700 nm and raw irradiance values from 350-900 nm |
title_fullStr |
Optical attenuation coefficients of glacier ice from 350-700 nm and raw irradiance values from 350-900 nm |
title_full_unstemmed |
Optical attenuation coefficients of glacier ice from 350-700 nm and raw irradiance values from 350-900 nm |
title_sort |
optical attenuation coefficients of glacier ice from 350-700 nm and raw irradiance values from 350-900 nm |
publisher |
PANGAEA |
publishDate |
2021 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.930278 https://doi.org/10.1594/PANGAEA.930278 |
op_coverage |
LATITUDE: 67.150000 * LONGITUDE: -50.020000 * DATE/TIME START: 2018-07-20T00:00:00 * DATE/TIME END: 2018-07-21T00:00:00 |
long_lat |
ENVELOPE(-50.020000,-50.020000,67.150000,67.150000) |
genre |
glacier Greenland ice core The Cryosphere |
genre_facet |
glacier Greenland ice core The Cryosphere |
op_relation |
Cooper, Matthew G; Smith, Laurence C; Rennermalm, Asa K; Tedesco, Marco; Muthyala, Rohi; Leidman, Sasha Z; Moustafa, Samiah E; Fayne, Jessica V (2021): Spectral attenuation coefficients from measurements of light transmission in bare ice on the Greenland Ice Sheet. The Cryosphere, 15(4), 1931-1953, https://doi.org/10.5194/tc-15-1931-2021 Cooper, Matthew G (2021): mgcooper/imcrt: v1.0. Zenodo, https://doi.org/10.5281/zenodo.4579073 https://doi.pangaea.de/10.1594/PANGAEA.930278 https://doi.org/10.1594/PANGAEA.930278 |
op_rights |
CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.93027810.5194/tc-15-1931-202110.5281/zenodo.4579073 |
_version_ |
1810445130568564736 |