Determination of Surface Roughness Length during Soil Freezing and Thawing Season over Eastern Qinghai-Xizang Plateau
青藏高原东部土壤冻融过程中地表粗糙度的确定

Using a new method and the turbulence observation data from Maqu station,the surface roughness length during soil freezing and thawing season over Eastern Qinghai-Xizang Plateau was estimated. The main results show that the method used in this paper is feasible to determine surface roughness length. Surface roughness length during soil freezing and thawing season has a little decrease trend. The surface roughness length of three phase in the season,unfrozen time,frozen time and melted time,are 3.23 10-3m,2....