[ncl-talk] CFSR from OpenDAP

[Rick Brownrigg]

My mistake..."http:" worked with 6.3.0, but "https:" did not.  Neither work
with 6.4.0.



On Thu, Apr 27, 2017 at 2:06 PM, David Brown <dbrown at ucar.edu> wrote:

> There is definitely a bug. NCL is getting confused by the "grb2" extension
> in the name, causing the path treated as a local file path rather than as
> an OpenDAP file. This should be an easy fix.
>  -dave
>
> On Thu, Apr 27, 2017 at 1:59 PM, Rick Brownrigg <brownrig at ucar.edu> wrote:
>
>> Hi Carl,
>>
>> Try "http:" rather than "https:" -- it worked for me.  In the case of
>> "https:", an strace of NCL revealed it was looking only in the local file
>> system for the file, and there was no network activity.  I don't know if
>> that is a bug or intentional behavior.
>>
>> Rick
>>
>>
>> On Thu, Apr 27, 2017 at 1:47 PM, Kyle Griffin <ksgriffin2 at wisc.edu>
>> wrote:
>>
>>> Hi Carl,
>>>
>>> I can confirm that I can open the file via netCDF4 in python (1.2.7),
>>> but cannot in my installs of NCL (6.3.0). There was a version of netCDF4
>>> that had issues with OPeNDAP a few months ago (1.2.1 ish, perhaps?), but
>>> that doesn't explain why the much older NCL 6.3.0 would also fail to open
>>> the file.
>>>
>>>
>>> Kyle
>>>
>>> On Thu, Apr 27, 2017 at 12:38 PM Carl Schreck <cjschrec at ncsu.edu> wrote:
>>>
>>>> I am trying to access CFS Reforecasts from any of the files underneath
>>>> here
>>>> <https://nomads.ncdc.noaa.gov/thredds/catalog/cfsr-hpr-ts45/catalog.html>,
>>>> such as this one for OLR
>>>> <https://nomads.ncdc.noaa.gov/thredds/catalog/cfsr-hpr-ts45/uswtoa_f/2010/201012/catalog.html?dataset=cfsr-hpr-ts45/uswtoa_f/2010/201012/uswtoa_f.01.2010123118.2011021418.2010123118.grb2>
>>>> .
>>>>
>>>> But NCL does not seem to be able to access the OpenDAP links:
>>>> ncl 0> f=addfile("https://nomads.ncdc.noaa.gov/thredds/dodsC/cfsr-h
>>>> pr-ts45/uswtoa_f/2010/201012/uswtoa_f.01.2010123118.20110214
>>>> 18.2010123118.grb2","r")
>>>> fatal:_NclFileCreate: Requested file does not exist as (
>>>> https://nomads.ncdc.noaa.gov/thredds/dodsC/cfsr-hpr-ts45/us
>>>> wtoa_f/2010/201012/uswtoa_f.01.2010123118.2011021418.2010123118.grb2)
>>>> or as (https://nomads.ncdc.noaa.gov/thredds/dodsC/cfsr-hpr-ts45/us
>>>> wtoa_f/2010/201012/uswtoa_f.01.2010123118.2011021418.2010123118),
>>>> can't add file
>>>>
>>>> I'm trying to figure out if it's an issue with NCL or with their
>>>> server. It also failed on 6.3.0.
>>>>
>>>> Let me know if you have any thoughts. Thanks!
>>>> Carl
>>>>
>>>>
>>>> --
>>>>
>>>>
>>>> <https://ncics.org/>
>>>> * Cyclone <http://www.cyclonecenter.org/>*Center.org
>>>> <http://www.cyclonecenter.org/>   *Carl J. Schreck III, PhD*
>>>> *Research Scholar / Research **Assistant Professor*
>>>> Cooperative Institute for Climate and Satellites NC (CICS
>>>> <http://www.cicsnc.org/>*-NC) <http://www.cicsnc.org/> /*
>>>> Department of Marine, Earth, and Atmospheric Sciences (MEAS)
>>>> <https://meas.sciences.ncsu.edu/>
>>>> North Carolina State University <http://ncsu.edu/>
>>>> NOAA National Centers for Environmental Information (NCEI)
>>>> <http://ncei.noaa.gov/>
>>>> 151 Patton Ave, Asheville, NC 28801
>>>> e: carl_schreck at ncsu.edu
>>>> o: +1 828 257 3140 <(828)%20257-3140>
>>>> c: +1 828 484 1702 <(828)%20484-1702>
>>>> Publications
>>>> <http://scholar.google.com/citations?hl=en&user=th8ONEcAAAAJ&view_op=list_works&sortby=pubdate>
>>>> ncics.org/mjo
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>>> --
>>> ----------------------------------------
>>> Kyle S. Griffin
>>> Department of Atmospheric and Oceanic Sciences
>>> University of Wisconsin - Madison
>>> Room 1407
>>> 1225 W Dayton St, Madison, WI 53706
>>> Email: ksgriffin2 at wisc.edu
>>>
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>>
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