Spatial variations in the average rainfall–altitude relationship in Great Britain: an approach using geographically weighted regression

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 t...

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Bibliographic Details
Published in:International journal of climatology 2001-03, Vol.21 (4), p.455-466
Main Authors: Brunsdon, C., McClatchey, J., Unwin, D.J.
Format: Article
Language:English
Subjects:
altitude
Earth, ocean, space
Exact sciences and technology
External geophysics
Great Britain
Meteorology
precipitation
regression modelling
Water in the atmosphere (humidity, clouds, evaporation, precipitation)
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Summary: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
ISSN:0899-8418
1097-0088
DOI:10.1002/joc.614