局地相似性在近地面层大气中的一个应用

AN APPLICATION OF THE LOCAL SIMILARITY ON THE ATMOSPHERIC SURFACE LAYER

利用Ｕ．Ｈｏｇｓｔｒｏｍ教授提供的瑞典Ｕｐｐｓａｌａ大学气象系于１９８６年夏季在Ｕｐｐｓａｌａ市郊农田中观察到的近地面层大气资料，对近地面层大气的局地相似性进行了论证，并给出了一套相似性函数的经验常数。结果表明，局地相似性比Ｍｏｎｉｎ－Ｏｂｕｋｈｏｖ相似性更适合于描述复杂下垫面近地面层大气。

n this paper, the local similarity in the surface layer is expounded and verified by the data, which were supplied by U. Hogstrom and were observed in the surface layer over the farm in countryside near Uppsala City of Sweden by the Department of Meteorology of Uppsala University in summer 1986. And a suit of more complete empirical constants about the similarity functions are determined with local similarity theory. The results show that the local similarity may be fitter for describing atmosphere in the surface layer over complex underlying surface than the Monin-Obukhov similiarity.