A conceptual weather-type classification procedure for the Philadelphia, Pennsylvania, area
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Abstract
A simple method of weather-type classification, based on a conceptual model of pressure systems that pass through the Philadelphia, Pennsylvania, area, has been developed. The only inputs required for the procedure are daily mean wind direction and cloud cover, which are used to index the relative position of pressure systems and fronts to Philadelphia.
Daily mean wind-direction and cloud-cover data recorded at Philadelphia, Pennsylvania, from January 1954 through August 1988 were used to categorize daily weather conditions. The conceptual weather types reflect changes in daily air and dew-point temperatures, and changes in monthly mean temperature and monthly and annual precipitation. The weather-type classification produced by using the conceptual model was similar to a classification produced by using a multivariate statistical classification procedure. Even though the conceptual weather types are derived from a small amount of data, they appear to account for the variability of daily weather patterns sufficiently to describe distinct weather conditions for use in environmental analyses of weather-sensitive processes.
Publication type | Report |
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Publication Subtype | USGS Numbered Series |
Title | A conceptual weather-type classification procedure for the Philadelphia, Pennsylvania, area |
Series title | Water-Resources Investigations Report |
Series number | 89-4183 |
DOI | 10.3133/wri894183 |
Year Published | 1990 |
Language | English |
Publisher | U.S. Geological Survey |
Description | iv, 23 p. |
Country | United States |
State | Pennsylvania |
City | Philadelphia |
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