一次华南沿海海雾个例的数值模拟研究  

A CASE STUDY OF NUMERICAL SIMULATION OF SEA FOG ON THE SOUTHERN CHINA COAST

作　　者：黄辉军[1] 詹国伟 刘春霞[1] 涂静[3] 毛伟康[1] 

机构地区：[1]中国气象局广州热带海洋气象研究所/广东省区域数值天气预报重点实验室/海洋气象联合开放实验室,广东广州510080 [2]茂名市气象局,广东茂名525000 [3]广东省气象台,广东广州510080

出　　处：《热带气象学报》2015年第5期643-654,共12页Journal of Tropical Meteorology

基　　金：国家自然科学基金(41275025;41175013);广东省科技计划项目(2008B030303072;2012A061400012);广东省气象局气象科技项目(2013B06;2013Q04;2014B08);广东省气象局科技创新团队"海洋气象预警预报技术研究"共同资助

摘　　要：利用中尺度数值模式WRF模拟了2011年3月20—22日华南沿海一次平流冷却雾过程,同时利用综合观测资料(包括台站资料、MODIS卫星云顶温度资料、GPS探空资料和海洋气象观测平台资料等),对比和验证一次海雾个例模拟的范围、大气边界层结构和海气界面特征。针对此次海雾个例的研究发现:(1)使用水平分辨率为0.5°×0.5°的海温,已经可以较好地模拟华南沿海中尺度海雾的范围;(2)随着大气边界层内垂直层次的增加,可以在一定程度上改善海雾垂直结构的模拟效果,主要表现为可以较好地模拟贴海面的逆温层结;(3)模式可以较好地模拟海雾期间的向下短波辐射、向下长波辐射和感热通量。并对此次海雾过程模拟存在的问题进行了讨论。Numerical simulation is carried out of a case of sea fog process from 20 to 22 March 2011 on the southern China coast. Compared with the integrated observation datasets（including observatory data, cloud-top temperature from MODIS, GPS sonde and data from the Integrated Observation Platform for Marine Meteorology）, this simulation focuses on the characteristics of the scope, boundary layer structure, and meteorological elements near the air-sea interface. Main results from this case are as follows：（1） the scope of mesoscale sea fog can be well simulated by sea surface temperature at 0.5 °× 0.5 °horizontal resolution;（2） the vertical structure of sea fog can be well simulated by adding vertical levels in the boundary layer, especially so for the surface-based inversion;（3） good simulations were also achieved on the downward shortwave radiation, downward long-wave radiation and surface sensible heat flux. In addition, some problems are also discussed of the simulation of this sea fog case.

关 键 词：海洋气象学 海雾 数值模拟 华南沿海 范围 边界层特征 

分 类 号：P435[天文地球—大气科学及气象学]