MM5 Modeling System Version 2
MM5 Model Version 2: Release emails to users
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MM5 Version 2 Release 2-12 (April 3 1999)
Dear MM5 (V2) users,
This email is regarding the MM5 V2 model's newest release: release-2-12.
The highlights of this release include:
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A way of allowing the model to handle different number of
landuse categories, and allowing a user to change land surface
properties is implemented. The change prepares the model to
handle new landuse data sources in the upcoming release of new
terrain program which will process 24-category USGS and 16-category
SiB datasets. Please read the CHANGES file for detail, and stay
tuned for mesouser email on the new terrain program release
next week.
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A new microphysics scheme, called the Schultz scheme (Schutlz
1995), is implemented in this release. This scheme predicts
cloud water/ice, rain water/snow and graupel (or hail).
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The MM5 code can now deal with 8-digit MDATE in year 2000 and
later, including runs across the millennium. However the 4DDA
code is not yet year-2000 compliant.
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Reisner II scheme (graupel version) is again revised extensively.
The scheme should still be considered experimental and may subject
to futher changes in later releases.
The detailed changes are described in the CHANGES file in the top
directory of the new tar file. The new tar file can be obtained
from several locations, including NCAR's MSS and anonymous ftp.
The CHANGES file separates changes into bug fixes/modification (which
you definitely want to include in your files), new features and
changes (for which you can make a decision as whether you include
them in your copy of the code). In addition to this description,
the actual changes are provided in a diff file: diff.03APR99, in
directory ReleaseNotes/.
A user should have enough information from these two files to make
corresponding changes to your own files.
If you don't want to get a new tar file, files CHANGES, and diff.03APR99
can be found from anonymous ftp under /mesouser/MM5V2/MM5, and on
paiute/ouray/chipeta under
~mesouser/MM5V2/MM5. They are also accessible from the Web site:
http://www2.mmm.ucar.edu/mm5/mm5v2/mm5v2-changes-r2-12.html
*** Note: IF YOU HAVE NOT MADE ANY CHANGES TO YOUR TAR FILE (including
file structure and source code), YOU SHOULD GET A NEW TAR FILE.
### Note also that the new Schultz microphysics scheme, and the
revised Reisner II scheme, exmoisg.F, new include files, landuse.tbl
file do not appear in the diff file. It is in the tar file.
If you use NCAR's Cray, the default tar file you get from MSS will
be changed to release-2-12 as of the evening of Apr 03 1999, MST.
If you would like to use any previous releases, you can change the
MSS read statement in the mm5.deck from
msread mm5v2.tar /MESOUSER/MM5V2/MM5/MM5V2.TAR
to
msread mm5v2.tar /MESOUSER/MM5V2/MM5/MM5V2.TAR.release-2-11
and so on.
If you are an MPP code user, please obtain a new MPP tar file.
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