南海、东海蒸发波导出现规律的对比分析  

Contrast on occurrence of evaporation ducts in the South China Sea and East China Sea area

作　　者：丁菊丽[1] 费建芳[1] 黄小刚[1] 张翔[2] 周鑫[3] 田斌[4] 

机构地区：[1]解放军理工大学气象学院 [2]海军海洋水文气象中心 [3]91404部队 [4]海军工程大学电子工程学院

出　　处：《电波科学学报》2009年第6期1018-1023,共6页Chinese Journal of Radio Science

基　　金：国家自然科学基金重点项目(40830958);国家重点基础研究发展规划项目(973)课题(2009CB421502)资助

摘　　要：利用2002年1～3月的铁塔平台气象水文数据以及New蒸发波导模型分析研究了南海及东海海域蒸发波导的出现规律,并利用实测数据对模型结果进行了检验。结果表明:南海海域蒸发波导的出现概率、高度、强度分别为100%、13.4m和30.3M,而东海海域分别为90%、9.1m和16.6M;除以14时为代表的中午时刻,南海海域一天当中蒸发波导基本上都出现在不稳定及近中性层结条件下,而东海海域蒸发波导在稳定、不稳定和近中性层结条件下的出现概率差别不大;相对蒸发波导高度而言,New模型诊断蒸发波导出现概率和强度的效果更好;不稳定及近中性弱不稳定层结条件下,New模型诊断的蒸发波导高度偏低,稳定层结条件下模型结果偏高,近中性弱稳定条件下模型结果与实测最吻合。The occurrences of the evaporation ducts of the South China Sea and East China Sea are studied based on the New evaporation duct model and the iron tower platform hydrometeorological data from Jan. to Mar. 2002, the observation data are used to verify the model outputs. Results show that, the occurrence probability, duct height and duct strength of the South China Sea are 100%, 13.4m and 30.3M respectively, while the values of the East China Sea are 90%, 9.1m and 16.6M. Except the midday hour such as 14, the evaporation duct in the South China Sea often occurs in the unstable and near neutral conditions, while evaporation duct of the East China Sea occurs almost equally in the stable, unstable and near neutral conditions. The New model can diagnose the occurrence probability and duct strength more accurately than the duct height. As to the evaporation duct height, the model - derived values are often smaller than the measurements in theunstable and near neutral but slightly unstable conditions, while in the stable conditions the model-derived values are much higher, only when the stratification is near neutral but slightly stable, the model derived values are close to the measurements.

关 键 词：蒸发波导 New模型 南海及东海海域 出现规律 

分 类 号：TN011[电子电信—物理电子学]