This page includes the idelagrid package. It is meant to replace the datagridi package for MM5V2 (written by Martin Leutbecher, M.Leutbecher@dlr.de). The code has been compiled with the PGroup F90 V3.2-4 compiler on linux (I had problems when using V3.2-2, also been unable to compile the code on DEC Alpha -> note that I only spent approx 5 minutes in total trying:-).

Please notice that this code has only been used with V3.4 of REGRID. The output works OK with V3.5 of INTERPF though.

HowToCompile: Copy the tar file under the /path-to-MM5/REGRID/regridder directory, gunzip and untar (gunzip idealgrid.tar.gz;tar xvf idealgrid.tar). Now move the file macros_idealgrid up one directory (i.e.; mv macros_idealgrid ../.). Non-Linux users will have to modify the ./REGRID/macros_idealgrid file before compiling.

Note: Take a backup of your namelist.input file since idealgrid uses that as well. Change directory to ./REGRID/regridder/idealgrid and type make. This should create an executable file named idelagrid under ./REGRID/regridder/idealgrid as well as a  new version of namelist.input under ./REGRID/regridder/. This new file is identical  to the namelist.input file used by regridder except it includes a few more features. First of all, one writes down the pressure levels one intends to use, note that one has to include all standard pressure levels that come from pregrid. Than one writes  the U- and V-values of wind, as well as stability (N^2*10^4), on those pressure levels. Finally one runs the program by typing ./idelagrid/idealgrid, the program reads the input files defined in namelist.input as regridder does and returns a REGRID_DOMAIN1  file. The surface temperature is read from the output files from pregrid and is therefore not constant with height as with datagridi. This can be changed by modifying T0 on line 120 in proc_make_ideal.F.

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Updates: 2002.01.26, problems with reading Coriolis parameter from TERRAIN file fixed as well as a bug in calculating the geopotential height. Thanks to Guðrún Nína Petersen.
Updates: 2002.06.10, wrong version of the file proc_make_ideal.F was on the web page. Thanks to Assela Pathirana.
 

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Enough talking, here is the file: idealgrid.tar.gz

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Now one can also get the updated version (works for V3.5 of MM5, both single processor and DM) of the ATEC  sponge . The tar file should be copied to the /path-to-MM5/ and un-tarred there. Then read README.SPONGE (or just type sh install.sh<enter>). For further information one can read this report about developement of an environment for high resolution simulations with MM5. It addresses parallelizme in MM5 in general, nothing original though, just material that I've picked up by going through stuff on the web. It might serve as a good starting point for those interested in familiarizing themselfs with the parallelizing methods used in the MM5 model.

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Finally here is a link to MM5-2-IDL. Please note that this software suite is still in Beta phase.