北冰洋浮冰站近地层参数的观测估算

利用2008年8月20～27日我国第3次北极考察队在85°N附近设立的冰站上进行的湍流通量、辐射观测所获取的相关资料,采用涡动相关法对夏季北冰洋浮冰下垫面的近地层参数进行了估算.结果显示,观测期间浮冰区冰雪面的平均感热、潜热和净辐射通量分别是0.2 W/m2,1.2 W/m2和9.9 W/m2,表明下垫面获得的大部分热...

Estimate of surface layer parameters on drifting ice in the Arctic Ocean

Surface layer parameters over 85°N drifting ice in the Arctic Ocean in summer are estimated using eddy correlation method with observational data of August 20 28,2008 during the 3rd Chinese National Arctic Research Expedition.The results show that the average sensible heat flux,latent heat flux and net radiation are 0.2,1.2 and 9.9 W/m2 respectively indicating that the majority of energy received by the underlying surface is used to melt ice and transfer downward,only a small portion for air heating by the way of sensible heat and latent heat.Surface albedo of drifting ice ranges from 0.68 to 0.82 with an average of 0.76.The drag coefficient is 1.65×10-3 under the near neutral stratification,which is bigger than the estimates obtained by the 1st and 2nd CHINARE.Carbon dioxide flux ranges from －0.09 to +0.06 mg/(m2·s)with an average of －0.015 mg/(m2·s),which means the drifting ice area in the Arctic Ocean in summer is a sink for atmospheric CO₂.