Title :
Aircraft Measurements of Heat Fluxes Over Wind-Driven Coastal Polynyas in the Bering Sea
Author :
Walter, Bernard ; Cavalieri, Donald J. ; Thornhill, K. Lee ; Gasiewski, Albin J.
Author_Institution :
Northwest Research Associates, Northwest Res. Associates Inc., Bellevue, WA
Abstract :
The first estimates of the average bulk heat transfer coefficient for Arctic sea ice are presented as a function of mean ice thickness. Turbulent heat flux measurements made by the NASA P-3 over the St. Lawrence Island polynya (SLIP) and Kuskokwim Bay in the Bering Sea during AMSR-Ice03 were used to estimate the values of the heat transfer coefficient CH. Estimates of ice thickness were made from the algorithm of Perovich using broadband albedos obtained from Moderate Resolution Imaging Spectroradiometer data. Plots of CH as a function of ice thickness showed a nearly linear relationship for ice thicknesses in the range of 0-14 cm in the polynyas. Previous estimates of CH for different cases over the SLIP were 1.2times10-3, but no estimates of ice thickness were available. These results will allow more accurate estimates of heat fluxes from the thin-ice areas of polynyas using satellite retrievals
Keywords :
aircraft; hydrological techniques; ocean temperature; radiometers; remote sensing; sea ice; 0 to 14 cm; AMSR-IceO3; Arctic sea ice; Bering sea; Kuskokwim Bay; Moderate Resolution Imaging Spectroradiometer data; NASA P-3; St. Lawrence Island polynya; broadband albedos; bulk heat transfer coefficient; heat fluxes; ice thickness; satellite retrievals; turbulent heat flux measurements; wind-driven coastal polynyas; Aircraft; Arctic; Heat transfer; Ice thickness; NASA; Ocean temperature; Satellites; Sea ice; Sea measurements; Sea surface; Atmospheric measurements; covariance analysis; meteorology; remote sensing; sea ice;
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
DOI :
10.1109/TGRS.2006.883348
