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.
出处
《热带气象学报》
CSCD
北大核心
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
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
WRF
atmospheric boundary layer
dust aerosol
radiative effect
numerical simulation
atmospheric boundary layer response
