Re: 20010808: comet case 24

Hi James,

Yes, these models run at different resolutions and update times.

Please reference this document from NCEP:

http://www.emc.ncep.noaa.gov/mmb/etagrids/

regarding model grid resolution for the ETA and the RUC

and:

http://sgi62.wwb.noaa.gov:8080/research/mrf.html

for the MRF

or visit this top link and you will find documenattion regarding all of
NCEP's model output:

http://www.emc.ncep.noaa.gov/modelinfo/index.html

This may also be helpful:

It is a snip from our pqact.conf files showing how we seperate out the
differing resolutions of model runs..

<snip>

# NMC GRIB products
#
#
# NOAAport ETA grids
# Grid #211 80km CONUS:    ^[YZ].Q.*/mETA
# Grid #212 40km CONUS:    ^[YZ].R.*/mETA
# Grid #215 20km CONUS:    ^[YZ].U.*/mETA
# Grid #214 47.5km Alaska: ^[YZ].T.*/mETA
# Select any/all grids desired from [QRUT]
#HRS    ^[YZ].[QRUT].*/mETA
#       PIPE    decoders/dcgrib2 -d data/gempak/logs/dcgrib.log
#               -e GEMTBL=/home/gempak/NAWIPS/gempak/tables 
#
# NOAAport MRF grids
# Grid #201 N. Hemisphere 381km: ^Y.A... KWBH
# Grid #202 CONUS         190km: ^Y.I... KWBH
# Grid #203 Alaska        190km: ^Y.J... KWBH
# Grid #204 Hawaii        160km: ^Y.K... KWBH
# Grid #205 Puerto Rico   190km: ^Y.L... KWBH
# Select any/all grids desired from [AIJKL]
#HRS    ^Y.[AIJKL]... KWBH
#       PIPE    decoders/dcgrib2 -d data/gempak/logs/dcgrib.log
#               -e GEMTBL=/home/gempak/NAWIPS/gempak/tables
#

<snip>


so for example:

The ETA designated with a "Q" is grid 211 at 80km resolution.


Please feel free to write back if this does not answer your questions to
your satisfaction.

Thank you for using the COMET case study library,

-Jeff
____________________________                  _____________________
Jeff Weber                                    address@hidden
Unidata Support                               PH:303-497-8676 
NWS-COMET Case Study Library                  FX:303-497-8690
University Corp for Atmospheric Research      3300 Mitchell Ln
http://www.unidata.ucar.edu/staff/jweber      Boulder,Co 80307-3000
________________________________________      ______________________

On Wed, 8 Aug 2001, Unidata Support wrote:

> 
> ------- Forwarded Message
> 
> >From: "J. Correia" <address@hidden>
> >Subject: comet case 24
> >Organization: FSU
> >Keywords: 200108080429.f784Tn105941 COMET CASE STUDY
> 
> i have been using the RUC, ETA and MRF model grids from the 25 January
> 2000 comet case and was wondering what the resolution of those model data
> sets are. the ruc and ETA both have a 90 something by 65 grid but the ruc
> shows far more detail...are the resolutions different on the data sets?
> thanks for the help...
> james correia jr.
> fsu
> 
> 
> ------- End of Forwarded Message
> 
>