GFS_v15p2 Suite

Overview

Suite GFS_v15p2 has the parameterizations used in the GFS v15 implemented operationally in June 2019.

The GFS_v15p2 physics suite uses the parameterizations in the following order:

• GFS RRTMG Shortwave/Longwave Radiation Scheme
• GFS Surface Layer Scheme
• GFS Near-Surface Sea Temperature Scheme
• GFS Simple Ocean Scheme
• GFS Noah Land Surface Model
• GFS Sea Ice Scheme
• GFS Hybrid Eddy-Diffusivity Mass-Flux PBL and Free Atmospheric Turbulence Scheme
• CIRES Unified Gravity Wave Physics Scheme - Version 0
• GFS Rayleigh Damping Calculation
• GFS Ozone Photochemistry (2015) Scheme
• GFS Stratospheric H2O Scheme
• GFS SAS-based Mass-Flux Deep Convection Scheme
• GFS SAS-based Mass-Flux Shallow Convection Scheme
• GFDL Cloud Microphysics Scheme
• GFS Precipitation Type Diagnosis Scheme

Suite Definition File

• For NEMSIO initialization data: suite_FV3_GFS_v15p2.xml

Namelist

• &gfs_physics_nml
  fhzero = 6
  h2o_phys = .true.
  ldiag3d = .false.
  fhcyc = 24
  use_ufo = .true.
  pre_rad = .false.
  ncld = 5
  imp_physics = 11
  pdfcld = .false.
  fhswr = 3600.
  fhlwr = 3600.
  ialb = 1
  iems = 1
  iaer = 111
  ico2 = 2
  isubc_sw = 2
  isubc_lw = 2
  isol = 2
  lwhtr = .true.
  swhtr = .true.
  cnvgwd = .true.
  shal_cnv = .true.
  cal_pre = .false.
  redrag = .true.
  dspheat = .true.
  hybedmf = .true.
  random_clds = .false.
  trans_trac = .true.
  cnvcld = .true.
  imfshalcnv = 2
  imfdeepcnv = 2
  cdmbgwd = 3.5,0.25 [1.0,1.2] [0.2,2.5] [0.125,3.0] ! [C768] [C384] [C192] [C96]L64
  prslrd0 = 0.
  ivegsrc = 1
  isot = 1
  debug = .false.
  oz_phys = .F.
  oz_phys_2015 = .T.
  nstf_name = @[NSTF_NAME]
  nst_anl = .true.
  psautco = 0.0008,0.0005
  prautco = 0.00015,0.00015
  lgfdlmprad = .true.
  effr_in = .true.
  do_sppt = .false.
  do_shum = .false.
  do_skeb = .false.
  do_sfcperts = .false.
• &gfdl_cloud_microphysics_nml
  sedi_transport = .true.
  do_sedi_heat = .false.
  rad_snow = .true.
  rad_graupel = .true.
  rad_rain = .true.
  const_vi = .F.
  const_vs = .F.
  const_vg = .F.
  const_vr = .F.
  vi_max = 1.
  vs_max = 2.
  vg_max = 12.
  vr_max = 12.
  qi_lim = 1.
  prog_ccn = .false.
  do_qa = .true.
  fast_sat_adj = .true.
  tau_l2v = 225.
  tau_v2l = 150.
  tau_g2v = 900.
  rthresh = 10.e-6
  dw_land = 0.16
  dw_ocean = 0.10
  ql_gen = 1.0e-3
  ql_mlt = 1.0e-3
  qi0_crt = 8.0E-5
  qs0_crt = 1.0e-3
  tau_i2s = 1000.
  c_psaci = 0.05
  c_pgacs = 0.01
  rh_inc = 0.30
  rh_inr = 0.30
  rh_ins = 0.30
  ccn_l = 300.
  ccn_o = 100.
  c_paut = 0.5
  c_cracw = 0.8
  use_ppm = .false.
  use_ccn = .true.
  mono_prof = .true.
  z_slope_liq = .true.
  z_slope_ice = .true.
  de_ice = .false.
  fix_negative = .true.
  icloud_f = 1
  mp_time = 150.

Note

nstf_name = \([2,0,0,0,0]^1 [2,1,0,0,0]^2 \)

• \(^1\) NSST is on and coupled with spin up off
• \(^2\) NSST is on and coupled with spin up on