GFS Physics Parameter Module

Those variables are grouped together in accordance with functionaity and are given brief descriptions and value specifications. There are two types of attributes (parameters vs. save) designated for the control variables. Those with a "parameter" attribute are prescribed with a preferred option value, while the ones with a "save" attribute are given a default value but could be changed at the model's execution-time (usually through an input of name-list file or through run scripts). More...

Detailed Description

Modules
module	physparam
	This module defines commonly used control variables and parameters in physics related programs.

1.1 Control flags for SW radiation
integer, parameter	physparam::iswrate = 2
	SW heating rate unit control flag: =1:k/day; =2:k/second. More...
integer, parameter	physparam::iswrgas = 1
	SW minor gases effect control flag (CH4 and O2): =0:no; =1:yes. =0: minor gases' effects are not included in calculations =1: minor gases' effects are included in calculations. More...
integer, save	physparam::iswcliq = 1
	SW optical property for liquid clouds =0:input cld opt depth, ignoring iswcice setting =1:cloud optical property scheme based on Hu and Stamnes(1993) [50] method. More...
integer, save	physparam::iswcice = 3
	SW optical property for ice clouds (only iswcliq>0) =1:optical property scheme based on Ebert and Curry (1992) [24] method =2:optical property scheme based on Streamer v3.0 [56] method =3:optical property scheme based on Fu's method (1996) [33] method. More...
integer, parameter	physparam::iswmode = 2
	SW control flag for scattering process approximation =1:two-stream delta-eddington (Joseph et al. 1976 [55]) =2:two-stream PIFM (Zdunkowski et al. 1980 [106]) =3:discrete ordinates (Liou, 1973 [68]) More...

1.2 Control flags for LW radiation
integer, parameter	physparam::ilwrate = 2
	LW heating rate unit: =1:k/day; =2:k/second. More...
integer, parameter	physparam::ilwrgas = 1
	LW minor gases effect control flag (CH4,N2O,O2,and some CFCs): =0: minor gases' effects are not included in calculations =1: minor gases' effects are included in calculations. More...
integer, save	physparam::ilwcliq = 1
	LW optical property scheme for liquid clouds =0:input cloud optical properties directly, not computed within =1:input cwp,rew, use Hu and Stamnes(1993) [50] method. More...
integer, save	physparam::ilwcice = 3
	LW optical property scheme for ice clouds (only ilwcliq>0) =1:optical property scheme based on Ebert and Curry (1992) [24] method =2:optical property scheme based on Streamer v3 [56] method =3:optical property scheme use Fu's method (1998) [32] method. More...

1.3 Control flag for LW aerosol property
logical, parameter	physparam::lalw1bd =.false.
	selects 1 band or multi bands for LW aerosol properties =.true.:aerosol properties calculated in 1 broad LW band =.false.:aerosol properties calculated in all LW bands variable names diff in Opr CFS More...

2.1 For module radiation_astronomy
integer, save	physparam::isolar = 0
	solar constant scheme control flag =0:fixed value=1366.0 \(W/m^2\)(old standard) =10:fixed value=1360.8 \(W/m^2\)(new standard) =1:NOAA ABS-scale TSI table (yearly) w 11-yr cycle approx =2:NOAA TIM-scale TSI table (yearly) w 11-yr cycle approx =3:CMIP5 TIM-scale TSI table (yearly) w 11-yr cycle approx =4:CMIP5 TIM-scale TSI table (monthly) w 11-yr cycle approx see ISOL in run scripts: Opr GFS=2; Opr CFS=1 More...
character, save	physparam::solar_file
	external solar constant data table,solarconstant_noaa_a0.txt More...

2.2 For module radiation_aerosols
integer, save	physparam::iaermdl = 0
	aerosol model scheme control flag =0:seasonal global distributed OPAC aerosol climatology =1:monthly global distributed GOCART aerosol climatology =2: GOCART prognostic aerosol model Opr GFS=0; Opr CFS=n/a More...
integer, save	physparam::iaerflg = 0
	aerosol effect control flag 3-digit flag 'abc': a-stratospheric volcanic aerols b-tropospheric aerosols for LW c-tropospheric aerosols for SW =0:aerosol effect is not included; =1:aerosol effect is included Opr GFS/CFS =111; see IAER in run scripts More...
logical, save	physparam::lalwflg = .true.
	LW aerosols effect control flag =.true.:aerosol effect is included in LW radiation =.false.:aerosol effect is not included in LW radiation. More...
logical, save	physparam::laswflg = .true.
	SW aerosols effect control flag =.true.:aerosol effect is included in SW radiation =.false.:aerosol effect is not included in SW radiation. More...
logical, save	physparam::lavoflg = .true.
	stratospheric volcanic aerosol effect flag =.true.:historical events of stratosphere volcanic aerosol effect is included radiation (limited by data availability) =.false.:volcanic aerosol effect is not included in radiation More...
character, save	physparam::aeros_file
	external aerosols data file: aerosol.dat More...

2.3 For module radiation_gases
integer, save	physparam::ico2flg = 0
	co2 data source control flag =0:prescribed value(380 ppmv) =1:yearly global averaged annual mean from observations =2:monthly 15 degree horizontal resolution from observations Opr GFS/CFS=2; see ICO2 in run scripts More...
integer, save	physparam::ictmflg = 0
	controls external data at initial time and data usage during forecast time =-2:as in 0,but superimpose with seasonal climatology cycle =-1:use user data,no extrapolation in overtime =0:use IC time to select data,no extrapolation in overtime =1:use forecast time to select data,extrapolate when necessary =yyyy0:use yyyy year of data, no extrapolation =yyyy1:use yyyy year of data, extrapolate when necessary Opr GFS/CFS=1; see ICTM in run scripts More...
integer, save	physparam::ioznflg = 1
	ozone data source control flag =0:use seasonal climatology ozone data >0:use prognostic ozone scheme (also depend on other model control variable at initial time) More...
character, save	physparam::co2dat_file
	external co2 2d monthly obsv data table: co2historicaldata_2004.txt More...
character, save	physparam::co2gbl_file
	external co2 global annual mean data tb: co2historicaldata_glob.txt More...
character, save	physparam::co2usr_file
	external co2 user defined data table: co2userdata.txt More...
character, save	physparam::co2cyc_file
	external co2 clim monthly cycle data tb: co2monthlycyc.txt More...

2.4 For module radiation_clouds
integer, save	physparam::icldflg = 1
	cloud optical property scheme control flag =0:use diagnostic cloud scheme for cloud cover and mean optical properties =1:use prognostic cloud scheme for cloud cover and cloud properties More...
integer, save	physparam::iovrsw = 1
	cloud micorphysics scheme control flag =1:modified Zhao/Carr/Sundqvist scheme (Moorthi, 2001) =2:Ferrier microphysics scheme (Ferrier et al. 2002) =3:as in 1 but with pdf method defined cloud cover More...
integer, save	physparam::iovrlw = 1
	cloud overlapping control flag for LW =0:use random cloud overlapping method =1:use maximum-random cloud overlapping method Opr GFS/CFS=1; see IOVR_LW in run scripts More...
logical, save	physparam::lcrick =.false.
	eliminating CRICK control flag More...
logical, save	physparam::lcnorm =.false.
	in-cld condensate control flag More...
logical, save	physparam::lnoprec =.false.
	precip effect on radiation flag (Ferrier microphysics) More...
logical, save	physparam::lsashal =.false.
	shallow convetion flag More...

2.5 For module radiation_surface
integer, save	physparam::ialbflg = 0
	surface albedo scheme control flag =0:vegetation type based climatological albedo scheme =1:seasonal albedo derived from MODIS measurements More...
integer, save	physparam::iemsflg = 0
	surface emissivity scheme control flag =0:black-body surface emissivity(=1.0) =1:vegetation type based climatology emissivity(<1.0) Opr GFS/CFS=1; see IEMS in run scripts More...
character, save	physparam::semis_file
	external sfc emissivity data table: sfc_emissivity_idx.txt More...

2.6 general purpose
integer, save	physparam::ivflip = 1
	vertical profile indexing flag More...
integer, save	physparam::isubcsw = 0
	sub-column cloud approx flag in SW radiation =0:no McICA approximation in SW radiation =1:use McICA with precribed permutation seeds (test mode) =2:use McICA with randomly generated permutation seeds Opr GFS/CFS=2; see ISUBC_SW in run scripts More...
integer, save	physparam::isubclw = 0
	sub-column cloud approx flag in LW radiation =0:no McICA approximation in LW radiation =1:use McICA with prescribed permutation seeds (test mode) =2:use McICA with randomly generated Opr GFS/CFS=2; see ISUBC_LW in run scripts More...
integer, save	physparam::ipsd0 = 0
	initial permutaion seed for mcica radiation More...
integer, save	physparam::ipsdlim = 1e8
	vertical profile indexing flag More...