Some Optical Properties of Blowing Snow.
Abstract
Windblown snow causes severe reduction in visibility and is a principal cause of obscuration in some regions of the world. Mechanisms of snow transport are presented along with particle size distributions, shape, and fall velocity. Relationships between visibility and windspeed and also between visibility and mass density in blowing snow are discussed. Variation of visible and infrared extinction coefficients with height are derived. In the near-millimeter wave region, the Rayleigh approximation is adequate for wavelengths greater than 4 mm. Near-millimeter wave extinction coefficients are given as functions of visibility and visible extinction coefficients. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1981
- Accession Number
- ADA103268
Entities
People
- Mary Ann Seagraves
Organizations
- Atmospheric Sciences Laboratory