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- Path: sparky!uunet!ukma!bogus.sura.net!howland.reston.ans.net!paladin.american.edu!auvm!MOE.GEOG.USU.EDU!RICK
- Message-ID: <9301272010.AA12449@moe.geog.usu.edu>
- Newsgroups: comp.infosystems.gis
- Date: Wed, 27 Jan 1993 13:10:14 MST
- Sender: Geographic Information Systems Discussion List <GIS-L@UBVM.BITNET>
- From: Rick Baker <rick@MOE.GEOG.USU.EDU>
- Subject: Re: climate
- Lines: 33
-
- robert,
-
- I am currently working on my theisis which is to develope a method
- to interpolate temperature observations of 257 wheather stations over the
- state of Utah.
- basic method:
-
- 1) lapse all temperature observations down to a common elevation
- 2) create a thiessen polygon grid using POLYGRID in ARC/INFO
- 3) smooth the thiessen polygons using a moving weighted average using GR
- ID in
- ARC/INFO. The trick here is to send the grid locations that contain an original
- observation directly to output, and when your smoothing window comes within
- view of such a location you need to give a greater weight to that particular
- element in the window. Otherwise you will end up with pits and spikes at
- station
- locations if you send those values directly to output.
- 4) add the elevation (lapse rate) back into each cell in the grid. ( of
- course
- you need DEMs for the study site.
-
-
- clear as mud huh!
-
-
- UCC
- ( )
- ( )
- (______)
- ///// rick baker
- Utah Climate Center
- Utah State University
- rick@larry.geog.usu.edu
-