利用激光雷达资料模拟沙尘气溶胶边界层响应  

SIMULATION OF DUST AEROSOL’S INFLUENCE ON ATMOSPHERIC BOUNDARY LAYER USING LIDAR MEASUREMENTS

作　　者：王娜[1,2] 张镭[1] 邓涛[1,3] 陈敏[1] 

机构地区：[1]半干旱气候变化教育部重点实验室/兰州大学大气科学学院,甘肃兰州730000 [2]陕西省气候中心,陕西西安710014 [3]中国气象局广州热带海洋气象研究所,广东广州510080

出　　处：《热带气象学报》2013年第2期328-336,共9页Journal of Tropical Meteorology

基　　金：国家重点基础研究发展规划项目(2006CB400501);国家自然科学基金项目(40675078);国家自然科学基金项目(41205123);广东省自然科学基金(10151008019000004)共同资助

摘　　要：利用后向散射激光雷达的探测资料,通过WRF(Weather Research and Forecasting)模式与包含气溶胶辐射效应的大气边界层数值模式嵌套起来的数值模拟平台(WRF-ABL),对2006年6月17日出现的浮尘天气沙尘气溶胶长波辐射效应及大气边界层的响应进行了模拟计算和分析。夜间沙尘气溶胶作用使低空沙尘气溶胶所在层冷却,整个沙尘过程4小时地面层温度减小0.28 K,地面至2 500 m高度温度减小约0.23～0.43 K,降温最大值在2 100～2 300 m高度层内,最大降温0.43 K;相应夜间沙尘气溶胶所在层风速增大。Using the data of a backscatter lidar, we conducted numerical simulations and analyses of the dust aerosol longwave radiative effect as well as the atmospheric boundary layer （ABL） response on the floating dust that appeared on 17 June, 2006 in Lanzhou. The work employed a WRF-ABL model system in which WRF is multinested with a nonhydrostatic numerical model that is coupled with ABL model, to take the aerosol radiative effect into consideration. The main simulation results are as follows. At night, the dust aerosols cool the lower layer. After the dust weather lasted about 4 hours, the surface temperature decreases by 0.28 K, and the temperature decreases by 0.23 0.43 K below 2 500 m. The maximum of the temperature decrease （0.43 K） occurs at the height of 2 100-2 300 m. The dust aerosols increase the wind speed.

关 键 词：WRF模式 大气边界层 沙尘气溶胶 辐射效应 数值模拟 边界层响应 

分 类 号：P435[天文地球—大气科学及气象学]