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Comparison of precipitation gage catches with a modified alter and a rigid alter type windshield
Author(s) -
Rawls Walter J.,
Robertson David C.,
Zuzel John F.,
Hamon W. R.
Publication year - 1975
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1029/wr011i003p00415
Subject(s) - windshield , ranging , environmental science , precipitation , storm , meteorology , atmospheric sciences , geology , geodesy , physics , thermodynamics
Gage catch from two standard weighing recording rain gages (Belfort model 5‐780), one with a modified Alter windshield and one with a rigid Alter type windshield, were compared for 89 storms with wind speeds ranging from 4 to 32 mph (6.4 to 51.5 km/h) and temperatures ranging from 14° to 69°F (−10° to 21°C). The differences between gage catches were statistically significant at the 1% level for wind speeds of 12 to 16 mph (19.3 to 25.7 km/h) and for temperatures of 23°F (−5°C) or less. Since on the average the windshields do not produce significantly different catches, either windshield can be used to compute actual precipitation by using the Hamon dual gage approach.