摘要
利用非静力中尺度模式WRF3.2对2010年11月17日出现在华东的一次辐射雾生消过程进行了数值模拟分析。结果表明:此次大雾是一次典型的辐射雾,稳定的环流形势、近地面层充足的水汽和辐射降温是造成此次大雾的根本原因。WRF模式对此次雾具有很好的模拟能力,模拟雾生消的时间、强度和范围都与实况比较接近,特别是雾中心的模拟,与实况吻合较好;积云参数化对雾的模拟比较敏感,采用浅对流Kain-Fritsch积云参数化方案对雾的模拟效果最好。
The non-hydrostatic mesoscale model WRF3.2 was utilized to simulate a radiation fog occurred in the east of China on November 17,2010.The results show that this fog was a typical radiation fog,and the stable circulation position,plenitudinous vapor and temperature drop caused by radiation were the main reasons of this dense fog.WRF model had a good ability to simulate this fog event,the time of the fog formation and dissipation,the intensity of the fog and fog area,especially the center of the fog simulated by the model were close to the fact.The cumulus parameter sheme was sensitive to simulation of the fog,the fleet convection Kain-Fritsch cumulus parameter scheme has the best simulating effect.
出处
《干旱气象》
2011年第2期174-181,共8页
Journal of Arid Meteorology
关键词
辐射雾
非静力中尺度模式WRF3.2
数值模拟
radiation fog
the non-hydrostatic mesoscale model WRF3.2
numerical simulation
