Relationships between albedo and microwave emissions over thin newly formed sea ice during fall freeze-up

Details Relationships between albedo and microwave emissions over thin newly formed sea ice during fall freeze-up Relationships between albedo and microwave emissions over thin newly formed sea ice during fall freeze-up

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3317503h&link_type=abstract

Geophysical Research Letters, Volume 33, Issue 17, CiteID L17503

Physics

1

Cryosphere: Sea Ice (4540), Cryosphere: Remote Sensing, Oceanography: Physical: Ice Mechanics And Air/Sea/Ice Exchange Processes (0700, 0750, 0752, 0754)

Scientific paper

This study examines the relationship between albedo and microwave emissions over thin newly formed Arctic sea ice using in-situ measurements collected 19 Oct - 13 Nov 2003 in the Cape Bathurst Polynya, southern Beaufort Sea. Regression analysis show that statistically significant relationships exist between the microwave polarization ratio (PR(19)) and sea ice albedo. The albedo derived from the relationship with the PR(19) is compared to the albedo calculated from two parameterization schemes used in the climate models. The results show that the parameterized albedo significantly underestimates over thin ice or overestimates over thick snow-covered ice relative to both the in-situ and microwave-derived albedo. This study suggest that use of satellite passive microwave data should be considered in order to improve the treatment of surface albedo in regional climate models, in seasonal or marginal ice zones.

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