Unidata - To provide the data services, tools, and cyberinfrastructure leadership that advance Earth system science, enhance educational opportunities, and broaden participation. Unidata
         
  advanced  
 

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[McIDAS #APD-338129]: GFS data on ADDE.UCAR.EDU



Hi Jack,

re:
> ...CONUS 190.5 km grid (grid 202). ... the data ... is shifted to the south
> relative to output on the other grids available
> GFS201: Mean sea level pressure on grid 201 (NH polar stereographic, grid spacing 381 km)
> GFS202: Mean sea level pressure on grid 202 (CONUS polar stereographic, grid spacing 190.5 km)
> GFS213: Mean sea level pressure on grid 213 (CONUS polar stereographic, grid spacing 95.25 km)

I ran a number of inter-comparisons between different projections and models for P at MSL
for the same model run time and forecast hour.  It seems clear that the 202 grid plot looks
shifted southward in all tests I ran on Saturday, day 2008068.

My first guess is that the calculation of the row number of the pole is off.  I will be
looking through the code to see I can see anything obviously wrong.

More later...

Cheers,

Tom
****************************************************************************
Unidata User Support                                    UCAR Unidata Program
(303) 497-8642                                                 P.O. Box 3000
support@xxxxxxxxxxxxxxxx                                   Boulder, CO 80307
----------------------------------------------------------------------------
Unidata HomePage                       http://www.unidata.ucar.edu
****************************************************************************


Ticket Details
===================
Ticket ID: APD-338129
Department: Support McIDAS
Priority: Normal
Status: Open


 
 
  Contact Us     Site Map     Search     Terms and Conditions     Privacy Policy     Participation Policy
 
National Science Foundation (NSF) UCAR Office of Programs University Corporation for Atmospheric Research (UCAR)   Unidata is a member of the UCAR Office of Programs, is managed by the University Corporation for Atmospheric Research, and is sponsored by the National Science Foundation.
P.O. Box 3000     Boulder, CO 80307-3000 USA     Tel: 303-497-8643     Fax: 303-497-8690