[GEMPAK #UOU-179945]: Canadian radar data

Harry,

I have enabled the Canadian radar data from pelmorex to go to 
idd.unidata.ucar.edu.
You can request the data using a pattern:
# EXP     - Canadian radar data from Pelmorex
request EXP     "^([A-z][A-z][A-z])([0-3][PRS]).TXT.gz"  idd.unidata.ucar.edu


The text files are gzipped. The algorithm that is being used to convert to 
precipitation
rate has been changed from "R" rain to "S" snow for the season, so you will see 
C1S
products (cappi products) as lat,lon,value tripples for all points. The C1P 
products
(precipitation accumulations) are only for a few sites.

I posted the original information that Steve Sinnis sent me for conversion of
the precip rates to dBZ so that I could combine the products with US radars:
http://www.unidata.ucar.edu/software/gempak/announcements/canadian_radar_data.html

I run the gdradarc program to create a canadian grid, and then combine the 
canadian and us grids
such as:
http://motherlode.ucar.edu/unidata/images/nids/radar_mosaic.gif

I put together an example for the UserComm meeting last May here:
http://motherlode.ucar.edu/unidata/images/nids/radar_mosaic_usonly.gif
http://motherlode.ucar.edu/unidata/images/nids/radar_mosaic_us_ca.gif

I haven't done any single site image viewing as NIDS type of products. I can 
grid the
individual sites and convert to images using img2gd, but haven't done a 
imsimg.f routine.
If desired, I can insert the composite grid into FNEXRAD with the other radar 
composites.

The data are bine made availabel by Steve Sinnis of Pelmorex. If you have any 
questions, I can try 
to answer, or we can see if Steve S. can help you.

Steve Chiswell
Unidata User Support


> > I notice at the bottom of the pqact.gempak_nexrad file in gempak 5.10.4
> > an entry with the following comment:
> >
> > Canadian radar data via Pelmorex
> >
> > Any chance that this data is available to us?
> >
> >
> 
> Harry,
> 
> Yes, we can make this data available. I have been working with Steve Sennis 
> at Pelmorex
> and they are feeing us here. I haven't yet has the opportunity to put together
> a web page documenting the data which they are ingesting as an EXP feed.
> 
> The individual site data are ascii files of individual point values of CAPPI 
> data. I have
> modified gdradr (as gdradrc) to composite the products into a product for 
> combining with
> the nexrad data (the Canadian files are precipitation rate instead of dBZ so 
> there is
> a conversion back to dBZ in gdradrc for the rain/snow seasonal files) which I 
> plan on
> putting in the FNEXRAD mosaic product here.
> 
> Let me work with Tom and Mike regarding how to set up the EXP data to the 
> idd.unidata.ucar.edu
> cluster and put together the data documentation that Steve Sennis provided.
> 
> Steve Chiswell
> Unidata User Support


Ticket Details
===================
Ticket ID: UOU-179945
Department: Support GEMPAK
Priority: Normal
Status: Closed