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[THREDDS #RHL-724195]: NEXRAD Level 3 Composite Data Files

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  • Subject: [THREDDS #RHL-724195]: NEXRAD Level 3 Composite Data Files
  • Date: Mon, 14 Sep 2020 21:57:36 -0600
Greetings!

Apologies for the trouble's you've encountered. It looks like you've run into a 
bug with netCDF-java's decoding of those NEXRAD GINI composites--that's why all 
of ToolsUI, IDV, and Weather and Climate Toolkit all have problems. 

1. I'd say the best way to work with the GINI files depends on the rest of your 
technology stack (once netCDF-java is fixed). If you're using Python, we also 
have GINI support in MetPy.

2. The NEXRAD GINI composite files in the Google Cloud Storage bucket are 
identical to those on https://thredds.ucar.edu

3. I'm not aware of anywhere else hosting the GRIB2 composites. Depending on 
your needs, you can access them from https://thredds.ucar.edu . This is 
provided that your needs don't require an operational data source (we don't 
promise 24/7 reliability, but our feeds are supported on a best effort basis) 
and that the use of our server doesn't impact our academic users (it was 
unclear from your original message how many clients would be connecting every 
5-10 minutes).

Hope that helps!

Ryan

> Hello,
> 
> I have been trying to work with the NEXRAD Level 3 composites (GINI) files
> available though your THREDDS server and have run into issues decoding and
> displaying the data. I have attempted to visualize these products with
> NOAA's Weather and Climate Toolkit, toolsUI, as well as Unidata's
> Integrated Data Viewer. Each of these products had either issues opening
> the files or the resulting statistics varied wildly from what I expected,
> including extremely negative values.
> 
> I have been successful working with the grib2 composite files, but am
> unable to locate a source for these other than your THREDDS server.
> 
> My questions are as follows
> 
> 1. What is the best approach to working with the aforementioned GINI files?
> 
> 2. Are the GINI files on the THREDDS server the same as the ones published
> in the Google Cloud Storage bucket (viewable here:
> https://console.cloud.google.com/marketplace/product/noaa-public/nexrad-l3?q=search&referrer=search
> ).
> 
> 3. Are the GRIB2 files available from a source that I can hit on a 5-10
> minute interval so that I can display the data for an application we are
> developing for the Air Force
> 
> Any insight you may be able to provide would be very much appreciated!
> 


Ticket Details
===================
Ticket ID: RHL-724195
Department: Support THREDDS
Priority: Urgent
Status: Closed
===================
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