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Orographic enhancement of snowfall.

Dore, Anthony; Choularton, T W; Fowler, David. 1992 Orographic enhancement of snowfall. Environmental Pollution, 75 (2). 175-180. 10.1016/0269-7491(92)90037-B

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Abstract/Summary

Field studies have been conducted at a hill site in Scotland to measure the variation with altitude of wet deposition by snowfall. The results showed that, due to wind drift effects, snowflakes were captured very inefficiently by snow collectors. It was therefore not possible to measure an increase in precipitation with altitude. The average concentrations of principal ions dissolved in the snow water were calculated over a two-month period. The results showed that the concentrations increased by factors of between 1·4 and 1·9 with an altitude rise of 400 m. A model of the orographic enhancement of snowfall by the seeder-feeder effect showed that the orographic enhancements of precipitation and pollutant deposition were significantly greater for snowfall than for rainfall. The wind drift of snow crystals and the evaporation of precipitation in dry valley air were important in determining the patterns of deposition

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1016/0269-7491(92)90037-B
Programmes: CEH Programmes pre-2009 publications > Biogeochemistry
CEH Sections: _ Pre-2000 sections
ISSN: 0269-7491
NORA Subject Terms: Ecology and Environment
Atmospheric Sciences
Date made live: 13 May 2009 10:42
URI: http://nora.nerc.ac.uk/id/eprint/6585

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