ADVANCES IN POLAR SCIENCE ›› 2006, Vol. 18 ›› Issue (2): 87-97.

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ANALYSIS OF STRUCTURE OF ATMOSPHERIC LAYER IN ICE CAMP OVER ARCTIC OCEAN

  

  • Online:2006-06-30 Published:2006-06-30

Abstract:

The vertical structure of atmospheric boundary layer over Arctic floating ice is presented by using about 50 atmospheric profiles and relevant data sounded at ice camp over Arctic Ocean from 22 August to 3 September,2003.It shows that the height of the convective boundary layer on the day is greater than that of the stability boundary layer on the night.The boundary layer can be described as vertical structures of stability,instability and multiple.The interaction be- tween relative warm and wet down draft air from up level and cool air of surface layer is signifi- cant,which causes stronger wind shear,temperature and humidity inversion with typical wind shear of 10m·s~(-1)/100m,intensity of temperature inversion of 8℃/100m.While the larger pack ice is broken by such process and forms new ice free area in the high latitudes of arctic o- cean.Further the interactions between air/ice/water are enhanced.The fact helps us to under- stand characteristics of atmospheric boundary layer and its effect in Arctic floating ice region.