Air Temperature and Radiation Depressions Associated with a Snow Cover
- 1 March 1992
- journal article
- Published by American Meteorological Society in Journal of Applied Meteorology and Climatology
- Vol. 31 (3) , 247-254
- https://doi.org/10.1175/1520-0450(1992)031<0247:atarda>2.0.co;2
Abstract
An analysis of air temperature and radiation regimes an days with and without a snow cover at the St. Paul, Minnesota, climatological observatory was made based on a 16 December-15 March 23-yr temperature record and a solar and longwave radiation record for 11 of those 23 years. In addition, an overlapping 41-yr temperature record of the Minneapolis-St. Paul National Weather Service Station (MSP) was analyzed for corroboration of the St. Paul temperature results. It was found that both the average maximum and average minimum air temperatures for winter days with a 10-cm or greater snow cover were 8.4°C lower than on the snow-free days. For days with intermediate-depth snow (>0 and 0 and <10 cm deep) the depressions of the maximum and minimum temperatures averaged about 2°C less. The temperature depressions at MSP were about 2°C less than at St. Paul for both snow-cover depths, a difference believed to be due to the more urban surroundings at MSP. A difference in the depression of the winter month tempe...Keywords
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