海上大气折射率的相似性研究  

Study on the similarity of ocean atmospheric refractivity

作　　者：郭相明[1,2] 康士峰[2] 赵栋梁[1] 张玉生[2] 

机构地区：[1]中国海洋大学海洋与大气学院,山东青岛266003 [2]中国电波传播研究所电波环境特性及模化技术重点实验室,山东青岛266107

出　　处：《海洋预报》2017年第3期71-76,共6页Marine Forecasts

基　　金：国家自然科学基金(41175012)

摘　　要：基于边界层相似理论,通过数值模拟的方法研究了大气折射率的相似性,数值模拟结果显示大气折射率在不稳定大气条件和近中性条件下大气折射率近似满足相似理论,在稳定大气条件下大气折射率不满足相似理论假设。其次通过气象梯度塔测量的水文气象参数计算的大气折射率剖面和开路涡度系统测量的数据计算的相似性特征量,实验研究了大气折射率的相似性,研究也表明大气折射率在稳定大气条件下不满足相似性。Based on Monin-Obukhov similarity theory, using the numerical method to validate whether the radio refractivity behave as a similarity variable, numerical results show that the vertical gradient of radio refractivity does not collapse to a single atmospheric stability universal function, but under unstable and near neutral conditions the radio refractivity approximately behave as a similarity variable. Using the hydrometeorology parameters measured by the meteorology grads tower to determine the radio refractivity profile, and with the turbulence data observed using the open path eddy covariance system, experiment results show that the vertical gradient of radio refractivity also does not collapse to a single atmospheric stability universal function when the atmosphere condition is stable.

关 键 词：大气折射率 相似理论 海洋大气边界层 

分 类 号：P732.6[天文地球—海洋科学]