Chinese Journal of Polar Research

ADVANCES IN POLAR SCIENCE ›› 2007, Vol. 18 ›› Issue (1-English): 1-7.

• Contents •     Next Articles

Snow water content estimation from measured snow temperature

 Li Zhijun1, Zhao Haiqing2, Feng Enmin3, Cheng Bin4 and Lu Peng1   

  1. 1 State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China;
    2 Department of Mathematics and Physics, Dalian Jiaotong University, Dalian 116028, China;
    3 Department of Applied Mathematics, Dalian University of Technology, Dalian 116024, China;
    4 Finnish Istitute of Marine Research, Helsinki FIN-00931, Finlan
  • Online:1957-03-30 Published:1957-03-30
  • Contact: Li Zhijun

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Abstract:

The vertical temperature profiles of snow and sea ice have been measured in the Arctic during the 2nd Chinese National Arctic Research Expedition in 2003 (CHINARE2003). The high-resolution temperature profile in snow is solved by one-dimensional heat transfer equation. The effective heat diffusivity, internal heat sources are identified. The internal heat source refers to the penetrated solar radiation which usually warms the lower part of the snow layer in summer. By temperature gradient analysis,the zero level can be clarified quantitatively as the boundary of the dry and wet snow.According to the in situ time series of vertical temperature profile, the time series of water content in snow is obtained based on an evaluation method of snow water content associated with the snow and ice physical parameters. The relationship of snow water content and snow temperature and temporal-spatial distribution of snow water content are presented.

Key words: Arctic, sea ice, snow, water content