Surface heat budget of a polynya in the coastal waters off Queen Maud Land, Antarctica, during austral summer |
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| Authors: | MR Ramesh Kumar Y Sadhuram |
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| Abstract: | The daily surface heat budget of a polynya in the coastal waters off Queen Maud Land, Antarctica is studied for the period from 23 December 1986 to February 1987 using the surface meteorological data collected on board the Swedish vessel M.S. Thuleland.The incoming solar radiation was found to be the most important component in the surface heat budget; its mean value for the study period was found to be about 209 W m−2. The latent and sensible heat fluxes were found in opposition and nearly balancing each other out. The average net heat gain over the polynya, for the study period, was 141 W m−2. From the mean heat storage values obtained from the temperature profiles, the heat gain at the surface is seen to be almost lost through advection and other interior physical processes in the top 50 m layer of the water column. This is reflected in sea surface temperature which was almost steady during the study period. |
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