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Observations with a directional raingauge
Author(s) -
Lacy R. E.
Publication year - 1951
Publication title -
quarterly journal of the royal meteorological society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.744
H-Index - 143
eISSN - 1477-870X
pISSN - 0035-9009
DOI - 10.1002/qj.49707733213
Subject(s) - rain gauge , meteorology , wind speed , environmental science , atmospheric sciences , wind direction , geology , geography , precipitation
Abstract An octagonal raingauge, which was set up to study the way in which rain impinged on vertical surfaces, is described. Observations made over a period of 12 years are analysed, showing that, in the London area, walls with moderate exposure to wind and facing approximately SW. receive most rain, equivalent to about 1/4 of the normal rainfall, and walls facing N. receive least, about 1/16 the normal rainfall. An equation connecting the mean incident angle of the rain on the ground with the wind speed is derived, and an attempt is made to obtain an indication of raindrop diameter.