Hello,<br>I am trying to use the copygb utility included with the WPP software to regrid Stage IV precip data from its original grid to the same grid as my WRF model runs. I have read the usage guide in copygb.doc, but it isn't helping me with what specifically I want to do. I have GRIB files for both sources (ST4.2008071918_01h and WRFPRS_d02.012_00 are my GRIB files for the Stage IV data (left) and my WRF output (right)). My issue is with the grid flag option "-g". I want to copy the Stage IV data to be on the same grid as my WRFPRS file. I figure that means I need to have the grid flag option set at "-4", but I get errors when trying to run it. Here is the command line I'm using:<br>
<br><b> ./copygb.exe -g-4 -b WRFPRS_d02.012_00.idx -a ST4.2008071918.01h ST4.2008071918.01h.idx WRFPRS_d02.012_00</b><br><br><br>And I get this error:<br><b>copygb: unsupported output grid -4</b><br><br clear="all">I don't want to put in a positive number because that means copygb will try to copy the Stage IV data onto an AWIPS grid, and I don' want that. How do I get it to copy to my WRF output grid?<br>
<br>Thanks.<br><br>Jeff Duda<br><br>-- <br>Jeff Duda<br>Iowa State University<br>Meteorology Graduate Student<br>3134 Agronomy Hall<br><a href="http://www.meteor.iastate.edu/~jdduda">www.meteor.iastate.edu/~jdduda</a><br>