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Spatial variations in the average rainfall–altitude relationship in Great Britain: an approach using geographically weighted regression
Author(s) -
Brunsdon C.,
McClatchey J.,
Unwin D.J.
Publication year - 2001
Publication title -
international journal of climatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.58
H-Index - 166
eISSN - 1097-0088
pISSN - 0899-8418
DOI - 10.1002/joc.614
Subject(s) - geographically weighted regression , precipitation , climatology , elevation (ballistics) , altitude (triangle) , regression , linear regression , regression analysis , environmental science , rain gauge , sea level , meteorology , geography , physical geography , geology , statistics , mathematics , geometry
The relationship between annual rainfall totals and gauge elevation over Great Britain is re‐examined using the recently developed technique of geographically weighted regression (GWR). This enables the spatial drift of regression parameters to be identified, estimated and mapped. It is shown that the rate of increase of precipitation with height, or height coefficient, varies from around 4.5 mm/m in the northwest to almost zero in the southeast. There is a particularly rapid change in this value across the English Midlands. The predicted sea level precipitation varies from 1250 mm to less than 600 mm in much the same way. Copyright © 2001 Royal Meteorological Society