Hello simon<br>I already have tried to define the variable as <br>
WVTU 1 99 WATER VAPOR TRANSPORT ZONAL COMPONENT (MM M/S)<br><br>but it shows <br>Open Error: Invalid variable record<br> --> The invalid description file record is: <br> --> wvtu water vapor transport zonal component (mm m/s)<br>
<br>About the levels they have not mentioned on there site. I will try to find out the levels. <br><br>thank you<br><br><br><div class="gmail_quote">On Fri, Apr 16, 2010 at 2:17 PM, Simon Blessing <span dir="ltr"><<a href="mailto:simon.blessing@fastopt.de">simon.blessing@fastopt.de</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Hi Sushant,<br>
<br>
I am not an expert in this, but it strikes me that your variable names<br>
contain hyphens ('-') and that you do not give any information about on<br>
how many levels the individual variables are defined. I am used to<br>
seeing something like<br>
...<br>
vars 6<br>
WVTU 1 99 WATER VAPOR TRANSPORT ZONAL COMPONENT (MM M/S)<br>
...<br>
in the vars section.<br>
Hope this helps,<br>
<br>
Simon<br>
<div><div></div><div class="h5"><br>
On 04/16/2010 07:07 AM, sushant puranik wrote:<br>
> Hello<br>
> I am trying to read the Passive Microwave Water Cycle (PMWC) Dataset. Data<br>
> file is in .dat format and for that purpose i have made a ctl file. It looks<br>
> like<br>
><br>
> 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<br>
> and 250 with special values for: 252 = Sea Ice, 254 = Insufficient<br>
> 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>
> 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>
><br>
><br>
><br>
><br>
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</blockquote></div><br><br clear="all"><br>