摘要
本文分析了影响边界层内大气气溶胶干沉降的各种物理因子，在忽略地表转换阻尼作用（ｔｒａｎｓｆｅｒｒｅｓｉｓｔａｎｃｅ）的情况下得到了一个仅依赖微气象资料的考虑层结影响的干沉降速度表达式。同时也给出了干沉降速度对粒径的依赖关系和随粒径的变化曲线，另外还在中必大气条件下推导出了气溶胶粒子浓度随高度的变化函数。
In this paper,several physical factors which influence the process of aerosol dry deposition inboundary layer are analyzed,and an expression of aerosol dry deposition velocity, which dependsonly on the micrometeorotogical condition with stratification,is also obtained when transfer re-sistance on the earth's surface is ignored.Then,the relation between dry deposition velocity anddiameter of aerosol particles,and the curve of change of dry deposition velocity with diameter ofaerosol particle sare given,Besides,the function of concentration of aerosol particles whichchanges with the height under the condition of neutral atmosphere is derived.
出处
《甘肃科学学报》
1995年第4期50-57,共8页
Journal of Gansu Sciences
基金
国家自然科学基金
关键词
大气边界层
沉降速度
大气
气溶胶
Atmospheric boundary layer
Resistance effect
Dry deposition velocity
At-mospheric aerosol
