Radiation Fog Modeling.
Abstract
In order to further examine the formation and evolution of radiation fogs, a numerical model was developed which contains explicit calculation of the fog microphysics. This model takes into account the evolving micrometeorological characteristics of the boundary layer, which includes the formation of the radiation exchanges between the overlying atmosphere and the ground, and the subsequent effect of haze development and fully developed fog conditions on these exchange. In terms of the fog microphysics, the model accounts for haze development with increasing relative humidity and the effect of radiative loss on the critical supersaturation of the soluble nuclei, in addition to explicitly calculating fog droplet growth. The resultant model has been tested for the effect of ground conditions on temperature evolution, the effect of the value of the condensation coefficient, and the effect of the nature of the cloud condensation nuclei distribution which is poorly understood at low supersaturations. Brief comparisons have been made with data obtained from the 1980 Meppen field experiment. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1982
- Accession Number
- ADA157895
Entities
People
- J. Latham
- M. H. Smith
- S. J. Perry
Organizations
- University of Manchester