Abstract:

Estimates of near surface layer parameters over 78°N drifting ice in the Arctic Ocean are made using bulk transfer methods with experiment data operated by the Chinese Arctic Scientific Expedition from August 22 to September 3,2003.The results show that the net radiation received by the snow/ice surface is 3.6 W/m2,part transformed into atmosphere through the sensible heat and latent heat, which account for 52% and 31% respectively,and the rest part being lost to deep ice by conductive process.The bulk transfer coefficient of momentum is about 1.16×10-3 near neutral stratification,which is smaller than the results obtained over 75°N drifting ice.However,to compare with the results observed over 75°N drifting ice in the Arctic Ocean in 1999,we can find that the thermodynamic and momentum of interactions between sea and air are significantly different with latitudes,concentration and scale of sea ice.It is very important to consider the effect of sea-air-ice interaction over the Arctic Ocean on the studying climate modeling.