Record Display for the EPA National Library Catalog


Main Title Comparison of Geostatistical Procedures for Spatial Analysis of Precipitation in Mountainous Terrain.
Author Phillips, D. L. ; Dolph, J. ; Marks, D. ;
CORP Author Corvallis Environmental Research Lab., OR. ;ManTech Environmental Technology, Inc., Corvallis, OR.
Publisher 1993
Year Published 1993
Report Number EPA/600/J-93/491;
Stock Number PB94-130028
Additional Subjects Willamette River ; Precipitation(Meteorology) ; Statistical analysis ; River basins ; Elevation ; Interpolation ; Spatial distribution ; Kriging ; Hydrology models ; Oregon ; Climate change ; Reprints ; Geostatistics ; Mountainous terrain ; Cokriging
Library Call Number Additional Info Location Last
NTIS  PB94-130028 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 25p
Application of simulation models to assessment of global climate change effects often requires spatially distributed estimates of precipitation, both under current and future climate scenarios. Simple interpolation methods fail to consider the effects of topography on precipitation and may be in considerable error in mountainous regions. The performance of three geostatistical methods for making mean annual precipitation estimates on a regular grid of points in mountainous terrain was evaluated. The methods were (1) kriging, (2) kriging elevation-detrended data, and (3) cokriging with elevation as an auxiliary variable. The study area was the Willamette River Basin, a 2.9 million hectare region spanning the area between the Coast Range and the Cascade Range in western Oregon.