Those aggregations are actually constructed by UNIDATA. You have to understand that NCEP is almost exclusively a GRIB shop so most things NetCDF come from outside of NCEP. I'm checking with Linda Miller to see if UNIDATA are planning to do nest aggregations or not. You could also contact them if you would like to see the NAM nests added.
I'm taking about creating a "best time series" aggregation of the forecast data, like this one for the NAM 12 km data that Unidata has on their THREDDS Data Server (they get the feed from noaaport)
If you look at the NetCDF subset service: http://motherlode.ucar.edu:8080/thredds/ncss/grid/fmrc/NCEP/NAM/CONUS_12km/NCEP-NAM-CONUS_12km-noaaport_best.ncd/dataset.html
You can see that the last 45 days + forecast are available as a single time series that is constructed from the "best" data of each forecast, which is often what people want. What this means for NAM is that when the latest forecast comes in, the forecast data from the previous forecast get "replaced" with the latest forecast data, so that only the 0-6 hour forecast data from older forecasts ends up becoming part of the best time series.
On Wed, Nov 30, 2011 at 10:15 AM, Geoff DiMego<address@hidden> wrote:Rich - glad you got what you were looking for. I'm afraid I don't know what you mean by 'best time series' aggregations. I'm assuming it can come from the Thredds Data Server which is getting done outside my branch.
We do have output at selected sites (see http://www.emc.ncep.noaa.gov/mmb/nammeteograms/ ) where hourly output is put together in a time-series way, but these points aren't going to give you the kind of coverage that a grid would and our output grids are available every hour now so the so-called bufr-soundings are probably not what you want or need.
Let me know if you need anything else.
On 11/30/2011 9:29 AM, Rich Signell wrote:
Excellent. Using the OPeNDAP GDS link, I was able to extract the 10m winds for the Gulf of Maine I wanted (see attached wind speed w/ every other vector plotted). It would great if there were "best time series" aggregations also -- hopefully we'll get those when you get your Thredds Data Server going!
On Wed, Nov 30, 2011 at 8:29 AM, Geoff DiMego<address@hidden> wrote:
The NOMADS site is here: http://nomads.ncep.noaa.gov/index.shtml
just scroll down and click on the grib filter or http (if you know or want openDAP, click that one) button next to NAM NEST CONUS.
Note while the main NOMADS page says under "6 hours" in the "freq" column, these forecast grids are available every hour through 36 hr and every 3 hr after that to 60 hr.
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