s.vol.rst - precip interpolation ?

[Patrick Barabe]

Chris & Bernard

I can't give you any advice regarding GRASS, here, but I thought you'd might be
interested in this web site from the Oregon Climate Service at OSU, if you're
not already aware of it:
    http://www.ocs.orst.edu/prism/
A good site about a precip and temp model based on elevation and site data
they've been developing.

Cheers,
Patrick Barabe
Center for Applied Spatial Analysis
University of Arizona, Tucson
http://www.casa.arizona.edu


Bernhard Sturm wrote:

> Hi Chris
> I am currently working on a thesis dealing exactly with this problem, so far
> I only used s.surf.tps and s.surf.idw in order to interpolate from site
> data, but my goal is to interpolate rainfall with respect to elevation. I am
> heading towards a self written module which uses r.mapcalc together with
> pre-calculated elevation regression parameters for the modification of the
> *flat* interpolated raster maps...
> However, I would be grateful if anybody else knows of an already existing
> procedure (or module) to solve this problem within GRASS...
>
> Cheers
> Bernhard Sturm
> ....................................
> Centre for Development and Environment
> Department of Geography - University of Berne
> Hallerstrasse 12
> 3012 Bern - SWITZERLAND
> www.cde.unibe.ch
>
> > Hi
> >
> > I am looking into means of generating rainfall (raster) maps from
> > site data, and am aware of the basic methods of interpolation
> > supported by GRASS such as s.surf.idw and s.surf.tps (now
> > s.surf.rst I believe). What I really want however is to interpolate
> > using elevation as an independent variable. A suitable method is
> > that of Hutchinson, implemented  in ANUSPLIN ( a commercial
> > package)  using thin plate splines.
> >
> > Does anyone know of a GRASS package or freely available code
> > which can do this ? I guess that s.vol.rst (referred to in the GRASS
> > web pages) would do the job, but has not yet been  implemented.
> >
> > Any info gratefully received, before I re-invent the wheel.
> >
> > regards, Chris
> >
> >
> > Chris Kilsby   Lecturer in Hydrology
> > Water Resource Systems Research Laboratory
> > Dept of Civil Engineering, University of Newcastle upon Tyne
> > NE1 7RU    United Kingdom
> > Tel + 191-222-5614  Fax + 191-222-6669
> > http://www.staff.ncl.ac.uk/c.g.kilsby