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@xxxxxxxxxxxxxxxx>
To: "Robert Wardwell" <rwardwell@xxxxxxxx>; "John Caron"
<caron@xxxxxxxxxxxxxxxx>
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@xxxxxxxx>
To: John Caron <caron@xxxxxxxxxxxxxxxx>
CC: <thredds@xxxxxxxxxxxxxxxx>
References: <002001c87960$fb7bb930$0f987682@xxxxxxxxxx>
<47C59A5C.9060103@xxxxxxxxxxxxxxxx>
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@xxxxxxxxxxxxxxxx>
To: "Robert Wardwell" <rwardwell@xxxxxxxx>
Cc: <thredds@xxxxxxxxxxxxxxxx>
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
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