[thredds] CONUS 12KM data question] (fwd)

John Caron caron at unidata.ucar.edu
Thu Mar 27 15:30:03 MDT 2008 

Sorry this has taken so long; we think NAM CONUS_12km is working correctly now. Please let us know 
otherwise.

Note that theres also a "conduit" dataset that has more variables, but fewer pressure levels. 
Compare the 2 at:
 
http://motherlode.ucar.edu:8080/thredds/ncss/grid/fmrc/NCEP/NAM/CONUS_12km/conduit/NCEP-NAM-CONUS_12km-conduit_best.ncd/dataset.html
http://motherlode.ucar.edu:8080/thredds/ncss/grid/fmrc/NCEP/NAM/CONUS_12km/NCEP-NAM-CONUS_12km-noaaport_best.ncd/dataset.html

Robert Wardwell wrote:
> Hi All,
> 
> The Conus 12km - noaaport seems to work when requesting a NetCDF subset 
> of Grid data as Point. There is only a single pressure level, however, 
> and therefore one line of data returned.
> 
> http://motherlode.ucar.edu:8080/thredds/ncss/grid/fmrc/NCEP/NAM/CONUS_12km/NCEP-NAM-CONUS_12km-noaaport_best.ncd?var=Geopotential_height&var=U-component_of_wind&var=V-component_of_wind&latitude=46.2&longitude=-122.18&time_start=2008-03-17T18%3A00%3A00Z&time_end=2008-03-29T00%3A00%3A00Z&temporal=point&time=2008-03-25T12%3A00%3A00Z&vertCoord=&accept=csv&point=true 
> 
> 
> 
> When using a similar query for the Alaska 11km model there is more data 
> returned. (more pressure levels)
> 
> http://motherlode.ucar.edu:8080/thredds/ncss/grid/fmrc/NCEP/NAM/Alaska_11km/NCEP-NAM-Alaska_11km_best.ncd?var=Geopotential_height&var=U-component_of_wind&var=V-component_of_wind&latitude=57&longitude=-157&time_start=2008-03-01T06%3A00%3A00Z&time_end=2008-03-29T00%3A00%3A00Z&temporal=point&time=2008-03-25T12%3A00%3A00Z&vertCoord=&accept=csv&point=true 
> 
> 
> 
> These two queries used to yield very similar results, but now it looks 
> like the Web form for the new CONUS 12km has a different layout.
> 
> Are these changes permanent, or are there still troubles with the CONUS 
> 12k Dataset? I have scripts that take a list of pressure levels, wind 
> speed, and wind direction for a vertical slice at a single coordinate 
> and interpolate the values to create input data for a model program that 
> we run on a daily basis. Those work great for the Alaska 11 km model, 
> but not the CONUS 12km model.
> 
> Thanks!
> 
> Rob Wardwell - USGS
> 
> 
> ----- Original Message ----- From: "Robb Kambic" <rkambic at unidata.ucar.edu>
> To: "Robert Wardwell" <rwardwell at usgs.gov>; "John Caron" 
> <caron at unidata.ucar.edu>
> Sent: Tuesday, March 18, 2008 3:06 PM
> Subject: [Fwd: Re: [thredds] CONUS 12KM data question] (fwd)
> 
> 
>> Robert,
>>
>> the problem is there are 2 different NAM CONUS_12km models, one comes 
>> in on the noaaport feed and the other on the conduit feed. Usually the 
>> conduit model is a superset of the noaaport model, but this is not the 
>> case this time. The pressure levels are missing from the conduit 
>> model, this is the problem and I don't know why.  I started storing 
>> the noaaport models yesterday, so there are only 2 days worth of files 
>> but they do have the pressure levels and I believe your query will now 
>> work. On the NAM models page, select the CONUS_12 - noaaport for your 
>> query.
>>
>> RObb...
>>
>>
>>
>>
>> -------- Original Message --------
>> Subject: Re: [thredds] CONUS 12KM data question
>> Date: Fri, 7 Mar 2008 11:55:25 -0800
>> From: Robert Wardwell <rwardwell at usgs.gov>
>> To: John Caron <caron at unidata.ucar.edu>
>> CC: <thredds at unidata.ucar.edu>
>> References: <002001c87960$fb7bb930$0f987682 at gs.doi.net> 
>> <47C59A5C.9060103 at unidata.ucar.edu>
>>
>> Hi John,
>>
>>    It looks like the Conus NAM 12Km is producing a dataset now, but it
>> doesn't seem quite right. The following query yields about 6 lines of 
>> data
>> with some 'NaN' values embedded. Are you all still experiencing technical
>> difficulties on your end, or do you think my query needs to be altered?
>> Thanks for the help!
>>
>> Rob Wardwell - USGS
>>
>> http://motherlode.ucar.edu:8080/thredds/ncss/grid/fmrc/NCEP/NAM/CONUS_12km/runs/NCEP-NAM-CONUS_12km_best.ncd?var=Geopotential_height&var=U-component_of_wind&var=V-component_of_wind&latitude=46.2&longitude=-122.18&time=2008-03-08T12:00:00&accept=csv&point=true 
>>
>>
>> date,lat[unit="degrees_north"],lon[unit="degrees_east"],vertCoord[unit="Pa"],Geopotential_height[unit="gpm"],U-component_of_wind[unit="m 
>> s-1"],V-component_of_wind[unit="m s-1"]
>> 2008-03-08T12:00:00Z,46.20511420838088,-122.17167762377011,1500.0,NaN,9.244886,-3.5872955 
>>
>> 2008-03-08T12:00:00Z,46.20511420838088,-122.17167762377011,4500.0,NaN,10.827087,-7.057358 
>>
>> 2008-03-08T12:00:00Z,46.20511420838088,-122.17167762377011,7500.0,NaN,9.777542,-7.877533 
>>
>> 2008-03-08T12:00:00Z,46.20511420838088,-122.17167762377011,10500.0,NaN,9.939941,-7.2315674 
>>
>> 2008-03-08T12:00:00Z,46.20511420838088,-122.17167762377011,13500.0,NaN,11.644409,-8.132599 
>>
>> 2008-03-08T12:00:00Z,46.20511420838088,-122.17167762377011,16500.0,NaN,12.315659,-10.930725----- 
>>
>> Original Message -----
>> From: "John Caron" <caron at unidata.ucar.edu>
>> To: "Robert Wardwell" <rwardwell at usgs.gov>
>> Cc: <thredds at unidata.ucar.edu>
>> Sent: Wednesday, February 27, 2008 9:14 AM
>> Subject: Re: [thredds] CONUS 12KM data question
>>
>>
>>> Hi Robert:
>>>
>>> The NAM conus 12km on motherlode has indeed been having problems 
>>> recently. Its still not exactly right (some new fields and levels are 
>>> being sent) but we should have it sorted out by tommorrow. If you see 
>>> any further problems after that, please let us know.
>>>
>>> BTW, Ive added you to the thredds mailing list.
>>>
>>> John
>>>
>>> Robert Wardwell wrote:
>>>> Hi,
>>>>  I have been querying wind data from your site at 
>>>> http://motherlode.ucar.edu:8080/thredds/catalog.html in order to 
>>>> model tephra and ashfall deposits which would accumulate in the 
>>>> event of a volcanic eruption at Mount St. Helens. Over the past few 
>>>> weeks I've had trouble accessing data for the NCEP-NAM-CONUS_12km 
>>>> Forecast Model Runs, and have been receiving errors in the browser 
>>>> window.
>>>>  For example, I am trying make the following request today.
>>>> http://motherlode.ucar.edu:8080/thredds/ncss/grid/fmrc/NCEP/NAM/CONUS_12km/runs/NCEP-NAM-CONUS_12km_best.ncd?var=Geopotential_height&var=U-component_of_wind&var=V-component_of_wind&latitude=46.2&longitude=-122.18&time=2008-02-27T12:00:00&accept=csv&point=true 
>>>> <http://motherlode.ucar.edu:8080/thredds/ncss/grid/fmrc/NCEP/NAM/CONUS_12km/runs/NCEP-NAM-CONUS_12km_best.ncd?var=Geopotential_height&var=U-component_of_wind&var=V-component_of_wind&latitude=46.2&longitude=-122.18&time=2008-02-27T12:00:00&accept=csv&point=true> 
>>>>
>>>>  I generally make this request at 3pm PST using an automated Python 
>>>> script, and it works great. The last few weeks, however, I have only 
>>>> been able to acess the data sporadically. Some days it works and 
>>>> some days I receive the error messages. I also noticed that the 
>>>> problem seems limited to the CONUS_12KM model. All of the other 
>>>> models I've tried seem to work fine.
>>>>  I am not sure if there is a problem with my request or a problem 
>>>> with data availability. Any thoughts you have on the matter would be 
>>>> greatly appreciated.
>>>>  Sincerely,
>>>>  Rob Wardwell
>>>> USGS - Cascades Volcano Observatory
>>>> 1300 Se Cardinal Ct. Bldg. 10, Suite 100
>>>> Vancouver, WA 98683
>>>> 360-993-8908
>>>>  ------------------------------------------------------------------------ 
>>>>
>>>>
>>>> _______________________________________________
>>>> thredds mailing list
>>>> thredds at unidata.ucar.edu
>>>> For list information or to unsubscribe,  visit: 
>>>> http://www.unidata.ucar.edu/mailing_lists/ 
>

More information about the thredds mailing list