Remote sensing of surface albedo and cloud properties in the Arctic from AVHRR measurements
Dissertation (Ph.D.) University of Alaska Fairbanks, 1996 Based on a comprehensive radiative transfer model, algorithms suitable for arctic conditions are developed to retrieve broadband surface albedo and water cloud properties from National Oceanic and Atmospheric Administration (NOAA) Advanced Ve...
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1996
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ftunivalaska:oai:scholarworks.alaska.edu:11122/9426 2023-05-15T13:10:26+02:00 Remote sensing of surface albedo and cloud properties in the Arctic from AVHRR measurements Han, Wei Stamnes, Knut Bowling, Sue Ann Harrison, William Li, Shusun Lubin, Dan Watkins, Brenton 1996 http://hdl.handle.net/11122/9426 unknown http://hdl.handle.net/11122/9426 Physics Department Physics Atmospheric Science Remote sensing Dissertation phd 1996 ftunivalaska 2023-02-23T21:37:16Z Dissertation (Ph.D.) University of Alaska Fairbanks, 1996 Based on a comprehensive radiative transfer model, algorithms suitable for arctic conditions are developed to retrieve broadband surface albedo and water cloud properties from National Oceanic and Atmospheric Administration (NOAA) Advanced Very High Resolution Radiometer (AVHRR) narrowband measurements. Reflectance anisotropy of snow surfaces is first simulated by an discrete ordinates radiative transfer formulation, and is then included in the comprehensive model for the retrieval. Ground-based irradiance measurements made by NOAA Climate Monitoring and Diagnostics Laboratory (CMDL) in Barrow, Alaska are compared with retrieved albedo and downwelling irradiances computed from retrieved cloud optical depth and effective radius. Good agreement is found between satellite estimates and ground-based measurements, which indicate that the retrieval algorithms proposed in this thesis are suitable for arctic conditions. It is found that the effects of snow bidirectional reflectance on the retrieval of the broadband albedo are significant, and that the Lambertian approximation could lead to a 30% underestimate of the surface albedo. It is also found that cloud effective radius in the Arctic is generally smaller as compared with mid- and low-latitudes. Doctoral or Postdoctoral Thesis albedo Arctic Barrow Alaska University of Alaska: ScholarWorks@UA Arctic Fairbanks |
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University of Alaska: ScholarWorks@UA |
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unknown |
topic |
Physics Atmospheric Science Remote sensing |
spellingShingle |
Physics Atmospheric Science Remote sensing Han, Wei Remote sensing of surface albedo and cloud properties in the Arctic from AVHRR measurements |
topic_facet |
Physics Atmospheric Science Remote sensing |
description |
Dissertation (Ph.D.) University of Alaska Fairbanks, 1996 Based on a comprehensive radiative transfer model, algorithms suitable for arctic conditions are developed to retrieve broadband surface albedo and water cloud properties from National Oceanic and Atmospheric Administration (NOAA) Advanced Very High Resolution Radiometer (AVHRR) narrowband measurements. Reflectance anisotropy of snow surfaces is first simulated by an discrete ordinates radiative transfer formulation, and is then included in the comprehensive model for the retrieval. Ground-based irradiance measurements made by NOAA Climate Monitoring and Diagnostics Laboratory (CMDL) in Barrow, Alaska are compared with retrieved albedo and downwelling irradiances computed from retrieved cloud optical depth and effective radius. Good agreement is found between satellite estimates and ground-based measurements, which indicate that the retrieval algorithms proposed in this thesis are suitable for arctic conditions. It is found that the effects of snow bidirectional reflectance on the retrieval of the broadband albedo are significant, and that the Lambertian approximation could lead to a 30% underestimate of the surface albedo. It is also found that cloud effective radius in the Arctic is generally smaller as compared with mid- and low-latitudes. |
author2 |
Stamnes, Knut Bowling, Sue Ann Harrison, William Li, Shusun Lubin, Dan Watkins, Brenton |
format |
Doctoral or Postdoctoral Thesis |
author |
Han, Wei |
author_facet |
Han, Wei |
author_sort |
Han, Wei |
title |
Remote sensing of surface albedo and cloud properties in the Arctic from AVHRR measurements |
title_short |
Remote sensing of surface albedo and cloud properties in the Arctic from AVHRR measurements |
title_full |
Remote sensing of surface albedo and cloud properties in the Arctic from AVHRR measurements |
title_fullStr |
Remote sensing of surface albedo and cloud properties in the Arctic from AVHRR measurements |
title_full_unstemmed |
Remote sensing of surface albedo and cloud properties in the Arctic from AVHRR measurements |
title_sort |
remote sensing of surface albedo and cloud properties in the arctic from avhrr measurements |
publishDate |
1996 |
url |
http://hdl.handle.net/11122/9426 |
geographic |
Arctic Fairbanks |
geographic_facet |
Arctic Fairbanks |
genre |
albedo Arctic Barrow Alaska |
genre_facet |
albedo Arctic Barrow Alaska |
op_relation |
http://hdl.handle.net/11122/9426 Physics Department |
_version_ |
1766229658246840320 |