Numerical experimentation with particles having non-zero terminal velocity in the atmospheric surface layer |
| |
| Authors: | Jack H Shreffler |
| |
| Institution: | (1) School of Oceanography, Oregon State University, Corvallis, Ore., USA;(2) Meteorology Laboratory (NOAA), Environmental Protection Agency, Research Triangle Park, N.C., USA |
| |
| Abstract: | Numerical solutions are obtained for a two-dimensional eddy diffusion equation describing aerosol particles in the atmospheric surface layer. Particles are assumed to be from either an elevated line source or a surface area source. Characteristics of the solutions are exhibited as a function of source type, lower boundary condition, and the ratio of terminal velocity ( ) to friction velocity (u
*). This theory indicates that suspended particles tend to escape the near-surface layer, and are thus subject to long-range transport, when the ratio /u
* is less than von Karman's constant. This prediction is consistent with available data. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
