Mesoscale Parallel Experiment Change Log

Experiment Name:  CONUS 3KM FV3SAR with dynamics/physics changes

When What
2020/01/25
  • The SARX parallel reverts back to using dt_atmos = 36, with n_split now set to 5.
  • 2020/01/16
  • The values of dt_atmos and n_split were reverted back to 30 and 6 in the SAR-X parallel due to several model failures.
  • 2020/01/14
  • A bug fix was applied to the post code used by the SAR and SAR-X parallels.
  • The winds coming out of the FV3 model are Earth-relative, and the UPP had been incorrectly assuming the winds were grid-relative.
  • 2019/11/22
  • Radiation is now called every 20 mins instead of every 60 mins.
  • The FV3SAR-X parallel now uses dt_atmos = 36, k_split = 2, n_split = 4.
  • kord has been changed from 11 to 9 in the FV3SAR-X parallel.
  • 2019/09/09/12
  • Switch from running with 65 level GFS configuration to 60 level NAM configuration with ptop=2 mb
  • hord_mt, hord_vt, hord_tm changed from 5 to 6, hord_dp changed from -5 to -6, hord_tr changed from 10 to 8
  • 2019/08/29/00
  • Change hord_tr (horizontal advection scheme for tracers) from 8 (fastest option) to 10 (less-diffusive option)
  • 2019/07/30/12
  • Began running 12z cycle
  • 2019/07/16/00
  • Moved run from WCOSS-Dell to WCOSS-Phase 2
  • 2019/06/22/00
  • Changed vtdm4 back to 0.075
  • 2019/06/18/00
  • Start of "low diffusion" test of 00Z FV3SAR initialized from FV3GFS, changed settings
    1. dt_atmos changed from 90 to 30 sec (more frequent update of physics)
    2. k_split changed from 6 to 2
    3. hord_mt, hord_vt, hord_tm changed from 6 to 5, hord_dp changed from -6 to -5 ("least diffusive" settings)
    4. vtdm4 changed from 0.075 to 0.03