Observing and Modeling the Surface Scattering Layer of First-Year Arctic Sea Ice
The goal of this work is to increase our quantitative understanding of the partitioning of incident solar (shortwave) radiation by sea ice. The partitioning of shortwave radiation into components backscattered to the atmosphere, absorbed by the ice, and transmitted to the ocean is central to the ice...
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ftdtic:ADA470226 2023-05-15T13:10:57+02:00 Observing and Modeling the Surface Scattering Layer of First-Year Arctic Sea Ice Moritz, Richard Light, Bonnie WASHINGTON UNIV SEATTLE APPLIED PHYSICS LAB 2007-07 text/html http://www.dtic.mil/docs/citations/ADA470226 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA470226 en eng http://www.dtic.mil/docs/citations/ADA470226 Approved for public release; distribution is unlimited. DTIC Snow Ice and Permafrost Optics *OPTICAL PROPERTIES *SCATTERING *SEA ICE *RADIATIVE TRANSFER LAYERS ARCTIC OCEAN ALBEDO SURFACES SOLAR RADIATION SUMMER *ICE-ALBEDO FEEDBACK *SURFACE SCATTERING LAYERS PARTITIONING *SHORTWAVE RADIATION Text 2007 ftdtic 2016-02-22T10:44:20Z The goal of this work is to increase our quantitative understanding of the partitioning of incident solar (shortwave) radiation by sea ice. The partitioning of shortwave radiation into components backscattered to the atmosphere, absorbed by the ice, and transmitted to the ocean is central to the ice-albedo feedback mechanism, the mean annual cycle of ice thickness, mechanical properties of the ice, and the quality and quantity of light available to under-ice biological communities. This partitioning is known to depend on the presence of surface scattering layers (SSLs). We conducted field observations and model simulations of radiative transfer within the surface layer and interior layers of sea ice. Results have been used to improve characterization of the properties of bare and ponded ice for the purpose of understanding the surface energy and mass balances of sea ice during summer. Three broad concepts have emerged from this work: (i) a 3-layer structure for specifying the vertical variation of optical properties of both bare and ponded sea ice, (ii) the optical properties found in the ice interior are independent of time, and (iii) a picture of the evolution of scattering near the surface of bare and ponded ice as the melt season progresses. The original document contains color images. Text albedo Arctic Arctic Ocean Ice permafrost Sea ice Defense Technical Information Center: DTIC Technical Reports database Arctic Arctic Ocean |
institution |
Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Snow Ice and Permafrost Optics *OPTICAL PROPERTIES *SCATTERING *SEA ICE *RADIATIVE TRANSFER LAYERS ARCTIC OCEAN ALBEDO SURFACES SOLAR RADIATION SUMMER *ICE-ALBEDO FEEDBACK *SURFACE SCATTERING LAYERS PARTITIONING *SHORTWAVE RADIATION |
spellingShingle |
Snow Ice and Permafrost Optics *OPTICAL PROPERTIES *SCATTERING *SEA ICE *RADIATIVE TRANSFER LAYERS ARCTIC OCEAN ALBEDO SURFACES SOLAR RADIATION SUMMER *ICE-ALBEDO FEEDBACK *SURFACE SCATTERING LAYERS PARTITIONING *SHORTWAVE RADIATION Moritz, Richard Light, Bonnie Observing and Modeling the Surface Scattering Layer of First-Year Arctic Sea Ice |
topic_facet |
Snow Ice and Permafrost Optics *OPTICAL PROPERTIES *SCATTERING *SEA ICE *RADIATIVE TRANSFER LAYERS ARCTIC OCEAN ALBEDO SURFACES SOLAR RADIATION SUMMER *ICE-ALBEDO FEEDBACK *SURFACE SCATTERING LAYERS PARTITIONING *SHORTWAVE RADIATION |
description |
The goal of this work is to increase our quantitative understanding of the partitioning of incident solar (shortwave) radiation by sea ice. The partitioning of shortwave radiation into components backscattered to the atmosphere, absorbed by the ice, and transmitted to the ocean is central to the ice-albedo feedback mechanism, the mean annual cycle of ice thickness, mechanical properties of the ice, and the quality and quantity of light available to under-ice biological communities. This partitioning is known to depend on the presence of surface scattering layers (SSLs). We conducted field observations and model simulations of radiative transfer within the surface layer and interior layers of sea ice. Results have been used to improve characterization of the properties of bare and ponded ice for the purpose of understanding the surface energy and mass balances of sea ice during summer. Three broad concepts have emerged from this work: (i) a 3-layer structure for specifying the vertical variation of optical properties of both bare and ponded sea ice, (ii) the optical properties found in the ice interior are independent of time, and (iii) a picture of the evolution of scattering near the surface of bare and ponded ice as the melt season progresses. The original document contains color images. |
author2 |
WASHINGTON UNIV SEATTLE APPLIED PHYSICS LAB |
format |
Text |
author |
Moritz, Richard Light, Bonnie |
author_facet |
Moritz, Richard Light, Bonnie |
author_sort |
Moritz, Richard |
title |
Observing and Modeling the Surface Scattering Layer of First-Year Arctic Sea Ice |
title_short |
Observing and Modeling the Surface Scattering Layer of First-Year Arctic Sea Ice |
title_full |
Observing and Modeling the Surface Scattering Layer of First-Year Arctic Sea Ice |
title_fullStr |
Observing and Modeling the Surface Scattering Layer of First-Year Arctic Sea Ice |
title_full_unstemmed |
Observing and Modeling the Surface Scattering Layer of First-Year Arctic Sea Ice |
title_sort |
observing and modeling the surface scattering layer of first-year arctic sea ice |
publishDate |
2007 |
url |
http://www.dtic.mil/docs/citations/ADA470226 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA470226 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
albedo Arctic Arctic Ocean Ice permafrost Sea ice |
genre_facet |
albedo Arctic Arctic Ocean Ice permafrost Sea ice |
op_source |
DTIC |
op_relation |
http://www.dtic.mil/docs/citations/ADA470226 |
op_rights |
Approved for public release; distribution is unlimited. |
_version_ |
1766245373643325440 |