[python #OQG-244028]: Python help

Greetings Pete,

It looks like there is an issue with the url to the catalog you are reading in. 
In your
script you have:

http://thredds.ucar.edu/thredds/catalog/grib/NCEP/GFS/Global_0p25deg_anl/latest.xml

but it should actually be 

http://thredds.ucar.edu/thredds/catalog/grib/NCEP/GFS/Global_0p25deg_ana/latest.html

That's 0p25deg_ana vs 0p25deg_anl...no idea why 0p25deg_anl returns something, 
but it looks
like it is returning a dataset from the forecast grids of the 0.25 deg GFS. I 
need to dig into that
a bit further to understand what is happening there (maybe a misconfigured 
catalog).

Also, you need to remove the time portion of the ncss query, as the time you 
pass in must
intersect the time bounds of the grid, and there is only one value in the 
analysis dataset.

Those two tweaks should do the trick.

Cheers,

Sean


> The more I think about this, maybe it's not a python/siphon issue, but rather 
> at thredds or java-netcdf issue? Why would thredds be returning a valid time 
> of 3 or 6 for an analysis when the time base is the initial time of the model?
> 
> 
> Just curious. I got around this for now by specifying the time to be 0 
> instead of whatever thredds throws back at me, since that value seems to be 
> wrong.
> 
> 
> Pete
> 
> 
> 
> <http://www.weather.com/tv/shows/wx-geeks/video/the-incredible-shrinking-cold-pool>--
> Pete Pokrandt - Systems Programmer
> UW-Madison Dept of Atmospheric and Oceanic Sciences
> 608-262-3086  - address@hidden
> 
> ________________________________
> From: Pete Pokrandt
> Sent: Saturday, November 11, 2017 11:12:28 AM
> To: address@hidden
> Cc: address@hidden; John Leeman
> Subject: Re: [python #OQG-244028]: Python help
> 
> 
> For what it's worth, the same thing happens if I just run the default 250 hPa 
> heights/winds notebook on the gallery. I just ran it now on Julien's alpha 
> testing jupyterhub server on jetstream, at 11:10 AM CST, where the most 
> recent model run should be 12 UTC, and the time on the plot shows 18:00 today.
> 
> 
> 250hPa_Hemispheric_Plot.ipynb
> 
> 
> Pete
> 
> 
> 
> <http://www.weather.com/tv/shows/wx-geeks/video/the-incredible-shrinking-cold-pool>--
> Pete Pokrandt - Systems Programmer
> UW-Madison Dept of Atmospheric and Oceanic Sciences
> 608-262-3086  - address@hidden
> 
> 
> ________________________________
> From: Unidata Python Support <address@hidden>
> Sent: Friday, November 10, 2017 3:47 PM
> To: Pete Pokrandt
> Subject: [python #OQG-244028]: Python help
> 
> 
> Pete Pokrandt,
> 
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Ticket Details
===================
Ticket ID: OQG-244028
Department: Support Python
Priority: Low
Status: Open
===================
NOTE: All email exchanges with Unidata User Support are recorded in the Unidata 
inquiry tracking system and then made publicly available through the web.  If 
you do not want to have your interactions made available in this way, you must 
let us know in each email you send to us.