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[IDV #TJT-228211]: Canadian Modeling Center Data in IDV



> Is there a location where CMC data can be found in IDV?  I am hoping to
> calculate "real-time" Potential Vorticity fields from the GDPS and RDPS
> data over the entire domain of each model, but I cannot easily get the data
> into IDV as a single grib file from their CMC's Datamart:
> http://dd.weather.gc.ca/
> 
> To get to the GDPS from there, you can navigate here:
> http://dd.weather.gc.ca/model_gem_global/25km/grib2/lat_lon/
> 
> All of the files within those directories are separated by individual
> variables rather than collated into one big grib2 file.
> 
> I am assuming that if I get their data files into IDV, I could use the
> derived fields to get to Potential Vorticity, but that may be overstepping
> the file capabilities.  If so, is there a way to calculate Potential
> Vorticity from the available variables in CMC's datamart?  Here is a list
> of all the variables:
> http://weather.gc.ca/grib/GLB_HR/GLB_latlonp24xp24_P000_deterministic_e.html
> 
> Hope you have some insight.  Thanks.
> 
> Bryan
> 
> --
> Bryan Guarente
> Instructional Designer/Meteorologist
> The COMET Program
> Boulder, CO
> 
> 
Hi Bryan,

I think you need to use the formula for your requirement. Load the data files 
first for all variables needed 
for the calculation, and then either call the build in formula or write your 
own formula. I check  we do
have potential vorticity based on theta and wind. You do need to learn how to 
use these formula. You 
can stop by my office if needed.

Yuan

Ticket Details
===================
Ticket ID: TJT-228211
Department: Support IDV
Priority: Normal
Status: Closed
===================
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