理查逊数Ri在沿海近地层大气稳定度分类中的应用

STUDY ON THE APPLI CAT 10N OF RICHARDSON NUMBER' SSTAB ILITY CLASSIFYING SCHEMES OF THE SURFACELAYER OVER COASTAL REGION

根据广东、浙江沿海２个１００ｍ气象铁塔上１０、２５、５０、７５、１６０ｍ五层各１年的逐时温度、风速梯度资料，研究理查逊数（Ｒｉ）在沿海近地层大气稳定度分类中的应用。结果表明：目前常用的理查逊数稳定度分类标准不适用于沿海地区，根据沿海地区的实际资料，本文推荐了一种适用于沿海地区的Ｒｉ数稳定度分类标准。

Richardson number's stability classifying schemes of the surface layer over the coastal region are analyzed by using the data obtained from two 100m towerslocated on the coastal area of Guangdong and Zhejiang provinces. Based on thewind speed, temperature, and wind direction data obtained at 10, 25, 50, 75, 100m,it is found that the limits of stability classes of the routine Richardson numberclassifying schemes were not available for the coastal region. A new Richardsonnumber classifying schemes limit of the coastal region is proposed