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MM5 Modeling System Version 3

Version 3 MM5 Change Log

Release
3-6

Release
3-5

Release
3-4

Release
3-3

Release
3-2

Changes since 3-5:

10/31/02: (Release 3.5.4)

BUG FIXES:

  • Allow cloud field in the initial conditions to be used correctly in the model. This would affect results only if cloud field is present in the MMINPUT file.

    • Affected files:
      Run/mm5.F
      domain/boundary/bdyin.F
      domain/initial/init.F

  • A correction to restart time calculation in MPI MM5 so that it is consistent with XTIME and hence MPI restart will be done correctly.
    This change makes MPI code the same as the non-MPI code.
    This affects MPI runs only.

    • Affected files:
      MPP/RSL/mpp_output_10.incl

  • Correct short-time step calculation when running MPI MM5 with the MPI_IO_NODE=1 option. This change only affects when MPI_IO_NODE is used. (Thanks to Al Bourgeois from RAP/NCAR)

    • Affected files:
      dynamics/nonhydro/sound.F

  • Correct the way record are created then the MPI_IO_NODE=1 option is used.

    • Affected files:
      domain/io/write_fieldrec.F

CHANGES:

  • Minor memory improvement. This change does not affect results. (Thanks to Xingang Fan of University of Alaska Fairbanks)

    • Affected files:
      include/fddagd.incl

  • Change to allow the creation of restrts directory in a MPI run if this directory does not exist when the run starts. (Thanks to the suggestion by Bart Brashers of MFG Inc.) This change affects MPI run only.

    • Affected files:
      configure.user
      domain/io/output.F

08/27/02: (Release 3.5.3)

BUG FIXES:

  • Reisner 2 to use RON instead of RON2 in some denominators (Thanks to G Bryan from Penn State University)

    • Affected files:
      physics/explicit/reisner2/exmoisg.F

  • PSIM and PSIH definitions for stable regime corrected in GSPBL. (Thanks to D Stauffer and G Bryan from Penn State University)

    • Affected files:
      physics/pbl_sfc/gspbl/gspbl.F

  • Correct the declaration of CKH from integer to real. Only affect results if one sets CKH differently from 1 in mm5.deck.

    • Affected files:
      include/param2.incl

  • Add MPP directives to Reisner II scheme, to allow change of 3/19/02 to run in parallel.

    • Affected files:
      domain/io/outtap.F, rho_mlt.F

  • Add a fix to correct the major problems associated with running the Reisner1 scheme on a vector machine. This only effect runs done on vector machines. However, please note that we are still working on some problem related to vector option.

    • Affected files:
      physics/explicit/reisner1/exmoisr.F
      MPP/RSL/call_vector_exmoisr.incl, vec_exmoisr_80.incl, vector_solve_temps.incl

CHANGES:

  • Add new updates to PXPBL scheme from Jon Pleim

    • Affected files:
      domain/io/outtap.F
      include/comicl.incl
      physics/pbl_sfc/pxpbl/acm.F, pxpbl.F sfcmm4.F, surfpx.F, vdiff.F

  • Fix to MRF PBL to make the soil temperatures more robust in some rare conditions.

    • Affected files:
      physics/pbl_sfc/mrfpbl/mrfpbl.F

  • Add a fix to correct rare blow-ups in the old KF scheme. Only affect running the model using vector option.

    • Affected files:
      physics/cumulus/kf/kfpara.F

  • Account for the melting of snow when IFSNOW=2. This completes the simple snow model modification added to MM5 in V3.5.

    • Affected files:
      physics/pbl_sfc/util/slab.F

  • Add a test, so that snow cover is only read and used from the LOWBDY file if IFSNOW=2. Small values of SNOWC are set to zero after they are read in. Initialize SNOWNCT array to zero each timestep to avoid poor boundary values of 1.0 in parallel model. (Thanks to Jennifer Cram of ATMET).

    • Affected files:
      domain/boundary/lbdyin.F
      domain/io/rdinit.F
      dynamics/nonhydro/solve.F

  • Set LSM soil temp to 0 C instead of 0 K for open water points. Correction to sea-ice logic in interpolated nests. Set SMCA=1. for water points. No effect on integration results. (Thanks to F Chen of NCAR/RAP).

    • Affected files:
      domain/nest/nestlsm.F
      physics/pbl_sfc/osusfc/surfce.F

  • KLPBL=1 to allow MRF PBL to work when greater than half the layers are in the PBL (Thanks to S.-Y. Hong of University of Yonsei, Korea). Only affect results in above case.

    • Affected files:
      physics/pbl_sfc/mrfpbl/mrfpbl.F

  • Change I=2 to I=IBGN in diffu.F (Thanks to McHenry of MCNC). No effect on results.

    • Affected files:
      physics/hzdiffu/simple/diffu.F

  • Add a stop if ISOIL=2 and IFSNOW=2, these two options cannot be used together. No effect on results.

    • Affected files:
      domain/initial/param.F

03/20/02:

Bug fix:

  • Two important corrections for the Reisner II scheme:

    1. Fix for graupel collection terms

    2. Fix to advect #/kg for number concentration (not #/m^3)

    These changes affect distribution among hydrometeos, and appear to have larger impact in the colder region. It also has an net effect of reducing surface precipitation. (Thanks to Bill Hall of NCAR.)

    Note that the output unit for number concentration of ice has been changed to #/kg for the time being.

Affected files:
domain/initial/paramr.F
physics/explicit/reisner2/exmoisg.F

02/26/02: (Release 3.5.2)

  • Bug fix: Correct an error with XTIME update for the nest if the nest starts later during a simulation. This is an error caused by our update in V3.5. No error in previous versions of MM5. (Thanks to Jennifer Cram for reporting the problem.)

    • Affected files:
      domain/initial/param.F
      dynamics/nonhydro/solve.

  • A update in MPP compile option for Linux machines.

    • Affected file:
      configure.user

  • Minor change in batch IBM job deck.

    • Affected file:
      Templates/mm5.deck.ibm-mpp

  • Consider smaller time step if Gayno-Seaman PBL scheme is used with bucket soil moisture option (IMOIAV > 0). (Thanks to Guenther Zaengl of University of Munich.)

    • Affected file:
      physics/pbl_sfc/util/slab.F

  • Bug fix: A correction to array indices to avoid possible memory overwrite. Only a problem if KF or FC scheme is not compiled. (Thanks to Bill Hall of NCAR.)

Affected file:
domain/io/output.F

01/23/02:

  • A further change in frozen rain condition used in OSU LSM

Affected files:
physics/pbl_sfc/osusfc/sflx.F

01/18/02: (Release 3.5.1)

  • Bug fix: Correct an error in defining CKH for the nest.

  • Affected files:
    include/param2.incl
    domain/initial/param.F
    domain/nest/initnest.F

  • Prevent change in albedo if sea ice is present in OSU LSM.

  • Affected file:
    physics/pbl_sfc/osusfc/surfce.F

  • Frozen rain condition may be considered in OSU LSM.

  • Affected file:
    physics/pbl_sfc/osusfc/sflx.F

12/5/01:

Changes in release-3-5:

Changes made in release-3-5

Note that you should recreate a new deck for V3-5 MM5.

 
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