WRF-NMM Users Page

WRF Modeling System Updates

The WRF model tar file has been updated to Version 3.2.1 on August 18, 2010.

The WRF Pre-Processing System (WPS) has also been upgraded to Version 3.2.1.

WRF Version 3.2.1 new features, updates and bug fixes

WRF-NMM specific updates

  • Minor syntax change for NMM binary read
  • HWRF specific bug fix for momentum mixing term
  • Restore type definitions needed for binary I/O on IBM, with a fix to allow compilation with G95
  • Bug fix for NMM with some gfortran compilers
  • More namelists cross checks

General updates


  • adapt several microphysics schemes to work at very low pressure (< 5 haPa): wdm5, wdm6, morrison, wsm3, wsm5, wsm6
  • myjsfc, myjpbl: changes the computation of virtual potential temperature so that it does NOT include cloud condensate
  • Thompson: Fixes a problem with tile artifacts appearing in RAINNC field and probably other model fields when Thompson microphysics used with numtiles set to a high value
  • MYJ turbulence scheme bug fix
  • YSU: minor bug fixes for PBL Prandtl number calculation in stable and unstable conditions
  • MYNN level 3 scheme: fix restart problem
  • URBPARM.TBL change: road width, roof level, etc.. Some values in this table were wrong in the 3.2 version
  • RRTMG LW reverse a change made for 3.2 that can cause warming spike


  • fix uninitialized ProcOrient field in linked lists of state variables, which could lead to unexpected stop during a run


  • default number of processors used in parallel make is now 2 (instead of 6)
  • add start and end time for compile to show how long it takes
  • Make the timing routine available even when the code is not compiled for DM_PARALLEL