<div style="DIRECTION: ltr">Hi all,<br> </div>
<div style="DIRECTION: ltr">I'm trying to use NCEP/NOAA surface energy flux datasets <a onclick="return top.js.OpenExtLink(window,event,this)" href="http://www.cdc.noaa.gov/cdc/data.ncep.reanalysis.html" target="_blank">
http://www.cdc.noaa.gov/cdc/data.ncep.reanalysis.html</a> in GRASS. There are 2 issues with this-</div>
<div style="DIRECTION: ltr">1. they are mostly in netcdf format</div>
<div style="DIRECTION: ltr">2. Many of these datasets come in funky 'T62 Gaussian grids'.</div>
<div style="DIRECTION: ltr"> </div>
<div style="DIRECTION: ltr">I managed with many people's help on this list to get netcdf into grass rasters (using gdal_translate and r.in.gdal), but the data is wrong. I'm sure its because of this T62 Gaussian coordinate system that its in. The only metadata i have for it is:
</div>
<div style="DIRECTION: ltr">that its a non-linear lat-long grid;</div>
<div style="DIRECTION: ltr">from 88.5425N to 88.5425S,<br>0E to 358.125E<br>192*94 points<br> </div>
<div style="DIRECTION: ltr">of approximately 1.8 degree resolution.</div>
<div style="DIRECTION: ltr"><br>How do i create a location in GRASS to handle this? I have tried several things that dont work. These include:</div>
<div style="DIRECTION: ltr">-letting r.in.gdal create its own location</div>
<div style="DIRECTION: ltr">-trying to bring it into a location that is 180W to 180E, 90S to 90N</div>
<div style="DIRECTION: ltr"> </div>
<div style="DIRECTION: ltr">I have thought about doing an x-y grid of 192*94 cells, but since the original is non-linear, it would probably be wrong.. </div>
<div style="DIRECTION: ltr">I also dont know (and could'nt find out online), whether 0E in the T62 grid is 180W or not; also could not find T62 in the epsg code file. <br><br>any ideas for this? </div>
<div style="DIRECTION: ltr">thanks,<br>vishal</div>