NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.

To learn about what's going on, see About the Archive Site.


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

20000427: increasing the number of grids for nmc2 feed eta212



>From: "David J. Knight" <address@hidden>
>Organization: UCAR/Unidata
>Keywords: 200004271537.e3RFbsG00855

>Hi Chiz (I'm assuming this will get forwarded to you ;-)
>
>Looks like I need to increase the number of grids that are
>allowed in a gempak grid file in order to recieve all
>the grids in the nmc2 feed eta grid 212 products.
>
>Do you know how many grids I need to allow for?
>
>I think I need to change MMHDRS in both
>$GEMPAKHOME/include/gemprm.h and gemprm.SunOS.
>Then recompile all gempak programs.
>
>Is there anything else that needs to be changed?
>
>Thanks
>David
>
>David Knight
>Department of Earth and Atmospheric Sciences   Tel: (518)-442-4204
>SUNYA   ES-228                                 Fax: (518)-442-4494
>Albany, NY  12222                              Email: address@hidden
>

David,

Increasing MMHDRS in both files is correct. Make sure you remove all 
library file in $GEMLIB before rebuilding to ensure that the value
gets propagated everywhere.

In the 5.4 distribution, the max number of grids in a file was 10,000
and dcgrib can use -m 10000 to create the file with that size. I've upped
that size for the next release, and see that the combined NMC2/HDS 212
grid file I have for 12Z today contains 11,845 grids.

I've defined MMHDRS=30,000 currently for the next distribution thinking
about ACARS, NLDN, shef and other growing observations. If you have any thoughts
on that size, let me know.

Steve Chiswell