<span style="font-family: arial,helvetica,sans-serif;">Hello </span><br style="font-family: arial,helvetica,sans-serif;"><span style="font-family: arial,helvetica,sans-serif;">I am trying to read the </span>Passive Microwave Water Cycle (PMWC) Dataset. Data file is in .dat format and for that purpose i have made a ctl file. It looks like <br>
<pre style="font-family: arial,helvetica,sans-serif;">The data files contain six 0.25-degree (1440x720) maps:<br>1. Water Vapor Transport Speed<br>2. Water Vapor Transport Direction<br>3. Water Vapor Transport Divergence<br>
4. Evaporation<br>5. Precipitation<br>6. Water Vapor<br><br>The maps are one byte with valid geophysical data falling between 0 and 250 with special values for: 252 = Sea Ice, 254 = Insufficient Data, 255 = Land<br><br>The scale factors and offsets are:<br>
1. Speed: x 2.4, to range between: 0 to 600 mm m/s<br>2. Direction: x 1.5, to range between: 0 to 360 degrees<br>3. Divergence: x 0.024 - 3.0, to range between: -3 to 3 mm/hour<br>4. Evaporation: x 0.003, to range between: 0 to 0.75 mm/hour<br>
5. Precipitation: x 0.012, to range between: 0 to 3 mm/hour<br>6. Water Vapor: x 0.3, to range between: 0 to 75 mm<br><br>The water vapor transport direction is given in the oceanographic convention.<br>
<br>The maps have:<br>Longitude = 0.25*xdim - 0.125 (degrees east)<br>Latitdue = 0.25*ydim - 90.125<br>where<br>xdim goes from 1 to 1440 and<br>ydim goes from 1 to 720.<br><br></pre>And my ctl file is as <br><br>dset /home/Sushant/Desktop/news_2006_05_pmwc_v01b.dat<br>
title "TESTING"<br>
undef 1e+20<br>
xdef 1440 linear 0.125000 0.25<br>
ydef 720 linear 90.125000 0.25<br>
zdef 1 levels 1<br>
tdef 31 linear 1may2006 24hr<br>
vars 6<br>
WVT-U WATER VAPOR TRANSPORT ZONAL COMPONENT (MM M/S)
<br>
WVT-V WATER VAPOR TRANSPORT MERIDIONAL COMPONENT (MM M/S)
<br>
WVT-D WATER VAPOR TRANSPORT DIVERGENCE (MM/HOUR)
<br>
EVAP EVAPORATION (MM/HOUR)
<br>
PRCP PRECIPITATION (MM/HOUR)
<br>
WVAP COLUMNAR WATER VAPOR (MM)<br>
endvars<br><br>but in GrADS it shows following error <br><br>ga-> open /home/Sushant/Desktop/wvdata.ctl<br>Scanning description file: /home/Sushant/Desktop/wvdata.ctl<br>Open Error: Invalid variable record<br> --> The invalid description file record is: <br>
--> wvt-u water vapor transport zonal component (mm m/s)<br><br> The data file was not opened.<br><br><br>Can anyone came across such a problem?<br><br>suggestions are appreciated<br><br>
<br><br>Thank you<br><br>Sushant<br>