| Variable |
Value |
Description |
| mp_physics |
4 |
|
| sst_update |
1 |
allow sea surface temperature update |
| ra_lw_physics |
1 |
(longwave radiation) RRTM scheme. Spectral scheme K-distribution Look-up table fit to accurate calculations. Interacts with clouds Ozone/CO2 from climatology |
| ra_sw_physics |
1 |
(short wave radiation) MM5 shortwave (Dudhia) Simple downward calculation. Clear-sky scattering. Water vapor absorption. Cloud albedo and absorption |
| radt |
20 |
minutes between radiation physics calls |
| sf_sfclay_physics |
1 |
(surface layer) Monin-Obukhov similarity theory. Taken from standard relations used in MM5 MRF PBL. Provides exchange coefficients to surface (land) scheme. Should be used with bl_pbl_physics=1 or 99. |
| sf_surface_physics |
2 |
(land surface) Noah Land Surface Model: Unified NCEP/NCAR/AFWA scheme with soil temperature and moisture in four layers, fractional snow cover and frozen soil physics |
| bl_pbl_physics |
1 |
(Planetary Boundary layer) Yonsei University scheme: Non-local-K scheme with explicit entrainment layer and parabolic K profile in unstable mixed layer. |
| bldt |
0 |
minutes between boundary-layer physics calls. 0 = call every time step |
| cu_physics |
1 |
(cumulus Parameterization) Kain-Fritsch scheme: Deep and shallow convection sub-grid scheme using a mass flux approach with downdrafts and CAPE removal time scale |
| cudt |
5 |
minutes between cumulus physics calls |
| icloud |
1 |
cloud effect to the optical depth in radiation |
| num_soil_layers |
4 |
number of soil level or layer in WPS output |
