| contributor author | Troen, I. | |
| contributor author | Mikkelsen, T. | |
| contributor author | Larsen, S. E. | |
| date accessioned | 2017-06-09T17:40:31Z | |
| date available | 2017-06-09T17:40:31Z | |
| date copyright | 1980/05/01 | |
| date issued | 1979 | |
| identifier issn | 0021-8952 | |
| identifier other | ams-9912.pdf | |
| identifier uri | http://onlinelibrary.yabesh.ir/handle/yetl/4233453 | |
| description abstract | The diffusion equation with a wavenumber-dependent diffusivity is derived as an approximation to the statistical theory of plume dispersion from a continuous point source. The travel time explicitly appearing in the statistical theory is implicitly included in the wavenumber-dependent diffusivity K(k). By suitable choice of this function it is possible within a few percent to reproduce the centerline concentration. Due to the approximate nature of the method, however, it yields a non-Gaussian concentration shape close to the source. Results for the case of a crosswind extended source are compared to other commonly used methods for this problem. Some considerations are presented on the proper choice of averaging time for the concentration field. | |
| publisher | American Meteorological Society | |
| title | Note on Spectral Diffusivity Theory | |
| type | Journal Paper | |
| journal volume | 19 | |
| journal issue | 5 | |
| journal title | Journal of Applied Meteorology | |
| identifier doi | 10.1175/1520-0450(1980)019<0609:NOSDT>2.0.CO;2 | |
| journal fristpage | 609 | |
| journal lastpage | 615 | |
| tree | Journal of Applied Meteorology:;1979:;volume( 019 ):;issue: 005 | |
| contenttype | Fulltext | |