Sea ice thickness estimated from passive microwave radiometers.
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Accession number;03A0155372
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| Title;Sea ice thickness estimated from passive microwave radiometers. |
| Author;
TATEYAMA K
(Hokkaido Univ., Mombetsu)
ENOMOTO H
(Kitami Inst. Technol., Kitami)
TOYOTA T
(Hokkaido Univ., Sapporo)
UTO S
(National Maritime Res. Inst., Tokyo)
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Journal Title;Polar Meteorol Glaciol (Nat Inst Polar Res)
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Journal Code:X0871A
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ISSN:1344-3437
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VOL.;NO.16;PAGE.15-31(2002)
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| Figure&Table&Reference;FIG.9, TBL.2, REF.25 |
| Pub. Country;Japan |
| Language;English |
| Abstract;This study presents the findings of research into the correlation between sea ice thickness and passive microwave radiation. In-situ sea ice thickness samples were obtained from video observations by the icebreaker Soya during 1996-1998 and surface feature observations in 1997 by the visible and near-infrared radiometer AVNIR mounted on the ADEOS satellite. These sea ice thickness data were binned into grid cell data of the satellite microwave radiometer SSM/I for the same location, and averaged to provide an average ice thickness for a grid cell. In order to survey the relationship between sea ice thickness and microwave radiation, two sea ice classification parameters for SSM/I were investigated as to their ability to estimate sea ice thickness. One sea ice classification parameter is the Polarization Ratio(PR), which was developed for a seasonally ice covered area and can distinguish three ice types: new ice, young ice, and first-year ice. Another parameter is the ratio between 37GHz vertical polarization and 85GHz vertical polarization(R37V/85V). It can distinguish fast ice in addition to the three ice types that can be distinguished by the PR. These parameters showed correlation coefficients with in-situ sea ice thickness, -0.77 and 0.67, respectively, in this study. Estimated sea ice thickness derived from multiple regression analysis using PR and R37V/85V showed good correlation(R=0.81) with in-situ sea ice thickness. (author abst.) |
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