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Re: Blend files with no extension?

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Jack Settelmaier, modified 6 Years ago.

Re: Blend files with no extension?

Youngling Posts: 29 Join Date: 11/2/12 Recent Posts
Thanks Dana.

I understand the balance between the minor pain of my desiring an extension, vs messing things up.  Actually, it appears my issue is more my one (back room VM) cannot read your sats site at all, while another can.  So, it appears the Weather and Climate Toolkit, does not need the extension.

Glad to hear you are aware of THREDDS and have pondered it.  Some tell me its trivial to set up.  It wouldn't be for me, since I have no easy non-Windows box access, and my Unix/Linux knowledge has mostly "aged off."  I like public-facing services, like THREDDS, as it opens up data to be SO much more useful, but I understand your perspective.

Attached are a few graphics I made, as I was trying to revive some efforts to comparatively view a dNBM/dt for the PoP12 valid at 00Z Apr 18, since JJ had passed around a post about the original "noise" in the Day 7 NDFD forecast for that time period, vs the NBM.

I'm happy to report I can access, display, and subset NBM data, and so the next step is to overlay as a layer on some of my (Esri) GIS mapping.  My soft goal is to display forecasts of ~>2" for 24hr periods, or some impacting variable/amount like that, vs model guidance, and perhaps compare with WPC and NDFD.  All stuff others have done, but not necessarily in GIS to maybe feed a Dashboard summary view.

On Thu, Apr 18, 2019 at 2:24 PM Dana Strom - NOAA Federal <dana.strom@noaa.gov> wrote:
Hi Jack,

I run this archive in the ~downloads directory. The gribs indeed do not have the .grb extension. Without going into exhaustive detail, the lack of the .grb extension is due to legacy filename convention thanks to FORTRAN 77's character limits.

I fear changing the filename convention now would cause issues for some of our users. I hope it doesn't cause you much trouble to download them and add the .grb extension.

We have investigated THREDDS to an extent. So far, we haven't needed to deviate from the viewer solutions we have created with MapServer and OpenLayers. There are some features that THREDDS has that we are not currently able to do, but nothing we can't solve in the future (time aggregates, etc.). The benefits haven't yet outweighed the time it would take for someone to set up that THREDDS service. I'm interested to see what graphics you produce with the data though!

I know this wasn't exactly what you wanted to hear, but I hope it helps at least give a little more clarification. Let me know if you have any other questions.

Dana


On Thu, Apr 18, 2019 at 2:12 PM Jack Settelmaier - NOAA Federal <jack.settelmaier@noaa.gov> wrote:
Hi,

Jeff suggested I ask the below question to you.

I recently came across this "trove" of NBM v3.2 GRIB data available at the 2nd link:  
https://sats.nws.noaa.gov/~downloads/nbm/grib2blendv32co/

The files in those data trees appear to NOT have any extensions, like .grb2  Why don't they?  Can they?

It seems most users would expect an extension. 

I'm personally trying to see what I can do with pointing to those from my Weather and Climate Toolkit setup, and the lack of extension made it "unhappy."

PS  Also, just curious, have you explored putting these data within a THREDDS server, ala UCAR's offering as an example, to allow for a) aggregations (store by time, var, etc.), b) auto-enabling WMS for those data?

--
Jack Settelmaier
(NRAP) Technical Lead, NOAA Big Data Project
Digital Techniques Meteorologist
NOAA/NWS, Southern Region HQ
Fort Worth, TX 
Work: 682 703 3685


--
Dana Strom
Verification and Visualization Task Lead
Meteorological Development Lab
NOAA/National Weather Service

301-427-9451



--
Jack Settelmaier
(NRAP) Technical Lead, NOAA Big Data Project
Digital Techniques Meteorologist
NOAA/NWS, Southern Region HQ
Fort Worth, TX 
Work: 682 703 3685

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