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MM5 Modeling System Version 3

Version 3 Regrid Change Log

12/23/2004:

Changes in release-3-7:

Changes made in release-3-7.

Changes since release-3-6:

03/04/03:

pregrid:

• Include canopy moisture in Vtables for AGRMET data. Canopy moisture
  is interpolated using mask interpolation scheme.

• Allow true latitude in GRIB file to be either positive or negative.

regridder:

• Allow polar-projection data to have origin location defined other than (1,1).

• Check for large positive values for masked fields.

• Prevent negative values of seaice.

• Minor change to accomodate Sun compiler.

12/27/02:

Changes in release-3-6:

Changes made in release-3-6.

Changes since release-3-5:

05/17/02:

• Add Mercator projection for pregrid.

  • Affected files:
    pregrid/grib_misc/datint.F, output.F rd_grib.F rrpr.F

• Fix upper level scaling - Thanks to Brent Shaw from FSL

  • Affected file:
    pregrid/util/gribcode.F

04/16/02:

• Add a fix so that the new "rerun" NNRP data files on the MSS can be accessed.

  • Affected files:
    pregrid/nnrp/get_nnrp.csh, get_nnrp.deck, get_ncep.deck.ibm, get_nnrp.sh

01/17/02:

• Use new REGRID tar file to run get NCEP GRIB data decks.

  • Affected files:
    pregrid/ncep.grib/get_ncep.deck, get_ncep.deck.ibm

12/19/01:

• Fix a problem with namelist processing when -999 is used for namelist variable new_levels_in_Pa.

  • Affected files:
    regridder/src/proc_namelist.F

• Fix a problem of accessing uninitialized array problem with the new TC bogus routine.

  • Affected files:
    regridder/src/module_tc_bogus.F, module_diags.F

12/5/01:

Changes in release-3-5:

Changes made in release-3-5.

Changes since release-3-4:

01/31/01:

• get_on84.deck and get_on84.csh are updated for a syntax error.

  • Affected files:
    pregrid/on84/get_on84.deck, get_on84.csh

• Documentation on how to use optional namelist variable ORDERED_BY_DATE is corrected.

  • Affected file:
    pregrid/Doc/html/how_to_use_pregrid.html

11/6/00:

Changes in release-3-4:

Changes made in release-3-4.

Changes since release-3-3:

7/18/00:

• Remove soil temperature adjustment based elevation difference in the incoming dataset (such as those in Eta's AWIP data and NNRP data) and MM5 model terrain as the soil temperature is adjusted in MM5 model at the present. (This change will be reinstated in future release. At that time, MM5 model will be changed accordingly.) The error was introduced to the REGRID tar file on 6/7/00. But please check to see if your routine (name listed below) is correct - search for 006 in your routine; if you don't find it, you are ok. This affects LSM runs only. Larger impact on NNRP data than AWIP data due to the coarser resolution of NNRP data - click here to see the difference plots.

  • Affected files:
    regridder/src/proc_make_dot_point_data.F
    (Thanks to Yang Yang of University of Hawaii to first note the difference.)

6/30/00:

• Add back SOILHGT to REGRID output. This field was accidently removed since 6/7/00. Affects only LSM runs.

  • Affected files:
    src/proc_output.F

6/07/00:

• Simplify the way make is done. Now one needs only to type 'make' to compile on one's machine.

  • Affected files:
    All Makefile
    macros_pregrid, macros_regridder (new)

• Update the shell script to run pregrid.

  • Affected file:
    pregrid/pregrid.csh

4/05/00:

• Modified Vtable for AWIP soil temperature data to accomodate recent change in the dataset.

3/13/00:

• Add compilation option for Linux using Portland Group Fortran 90 compiler.

Changes in release-3-3 (2/11/00):

pregrid:

• A new storage.F routine in pregrid/ncep.grib directory. This new routine works better on machines where the old routine might encounter difficulty.

• Adapt to Sun's compiler so that it can read the namelist file on a Sun.

regridder:

• Correct errors in interpolation using Lambert-Conformal projection cross dateline, and in the southern hemisphere.

• Allow input data with Mercator projection.

• Clean up memory allocation/deallocation, constant initialization for speculative machines.

• Allow choice of linear or quadratic horizontal interpolation of fields.

• Option to change the water to land use category for permanent ice if the SST is colder than a given threshold. If the sea ice field exists, this is set to 1 at that location. Please see an example in Doc/README.namelist.

• Masked interpolations have been modified. The soil moisture will not use values larger than 0.5. The soil temperature uses a combination of the TEMPGRD (if it exists) and the latitude to determine missing values (such as over small islands).

• The SNOWCOVR field can be computed from the SNODEPTH field.

• A constant file is provided in the namelist to allow users to have a single time of a field that is not reported frequently (such as snow cover or SST) used throughout the analysis.

Changes in release-3-2 (9/27/99):

pregrid:

• Allow simple interpolation of missing-level data in vertical.

regridder:

• Allows constant snow/sst fields

• This will allow one-time level SST and/or snow cover available for regridder to process for the rest of time levels. For details how to do so, please see Doc/README.namelist

• Fixes rotated winds from Eta

• This is an error correction for Eta model data. Wind direction was in error and error would increase from the central longitude of the original projection.

• Allows combination of data sources

• This allows the capability to use 3D analyses from one data source (such as NCEP's ON84) and soil temperature/moisture data from another (such as NNRP). To do this, place the primary dataset first in the namelist after 'root'. For example, if one is trying to combine ON84 and NNRP data, define root as:

  • &record3
    root = '../pregrid/ON84' , '../pregrid/FILE'

• Missing soil temps (islands) based on TEMPGRD

• Regridder now fills the soil temperature over small islands (which the coarse input data from global analysis doesn't resolve) with the annual mean deep soil temperature from Terrain. only 5 min and 30 sec data are requested.