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MM5 Modeling System Version 3

Dear MM5 users,

This email announces the release 3-5 of Version 3 preprocessing programs: TERRAIN, REGRID, RAWINS, LITTLE_R, INTERPF, NESTDOWN, INTERPB, GRAPH and RIP.

All source code tar files are updated on anonymous ftp site, NCAR's MSS, and Cray-accessible disk since December 5, 2001.
For information on where to obtain the 3-5 source code, please see

     http://www2.mmm.ucar.edu/mm5/mm5v3.html

The highlight of changes in each program is described in the CHANGES file in each of the program tar file. They are also poste on the Web:

     http://www2.mmm.ucar.edu/mm5/mm5v3/changes-v3.html

The changes include:

1. Allowing additional 3D fields to pass through pre-processing programs (for example, cloud information). If microphysics fields are available in input files to INTERPF, lateral boundary conditions will be computed and provided to MM5 model;

2. Removing or increasing limit on the number of processing times in RAWINS and LITTLE_R;

3. Capability of producing surface FDDA analysis for MM5 in program LITTLE_R;

4. Changing vertical levels in NESTDOWN;

5. Generating intermediate files from INTERPB, and pass them through pre-processing programs.

NCAR is discommissioning its last Cray in January 2002. We have updated many of our job scripts to run on IBM, including most get-data scripts, and fetch deck to get data to run LITTLE_R. We are also building a Web page to help users running jobs on IBM.
Please visit

     http://www2.mmm.ucar.edu/mm5/mm5v3/ibm.html

For those of you who have their favorite MM5 files in Cray format, it is time to convert them in IEEE format while Cray is still available.