Re: subtracting wrfout at different resolutions

Andrea, Thanks for the reply. Yes, it was clear to me that I need to interpolate and found some interpolation routines in the ncl repository. I was wondering whether anybody already had a ready to go script, i.e., same run, 3:1 ratio, and did the fine to coarse average. :) Dorita ===================================== Dr. Dorita Rostkier-Edelstein, Ph.D. http://www.geocities.com/drostkier/DO_page.html ===================================== ________________________________ From: "Hahmann, Andrea N." <ahah@risoe.dtu.dk> To: Dorita Rostkier-Edelstein <drostkier@yahoo.com>; ncl-talk@ucar.edu Sent: Sunday, March 29, 2009 6:04:21 PM Subject: RE: [ncl-talk] subtracting wrfout at different resolutions Dorita You cannot really do this directly, since it is likely that the files will have different dimensions. One possible way would be to interpolate all the data to a common grid using "rcm2rgrid". The other possible way is to "average" the 3x3 grid cells from the fine mesh to obtain the value on the coarse one if your grid ratio is 3 and these grids are part of the same run (and are not a 2-way nest, since the average will be done already). Andrea Andrea Hahmann, PhD. Senior Scientist Phone direct +45 4677 5471 andrea.n.hahmann@risoe.dk Wind Energy Department Risø National Laboratory for Sustainable Energy Technical University of Denmark Building 118, P.O. Box 49 DK-4000 Roskilde, Denmark Tel +45 4677 4677 Fax +45 4677 5083 From:ncl-talk-bounces@ucar.edu [mailto:ncl-talk-bounces@ucar.edu] On Behalf Of Dorita Rostkier-Edelstein Sent: Sunday, March 29, 2009 11:52 AM To: ncl-talk@ucar.edu Subject: subtracting wrfout at different resolutions Hi users, Has anybody a script to subtract wrfout files at different resolutions? Thanks, Dorita ===================================== Dr. Dorita Rostkier-Edelstein, Ph.D. http://www.geocities.com/drostkier/DO_page.html =====================================

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Received on Sun Mar 29 2009 - 13:14:36 MDT