Common Community Physics Package (CCPP) Scientific Documentation  Version 2.0
physcons Module Reference

This module contains some of the most frequently used math and physics constants for GCM models.

Variables

Math constants
real(kind=kind_phys), parameter con_pi =3.1415926535897931
 pi More...
 
real(kind=kind_phys), parameter con_sqrt2 =1.414214e+0
 square root of 2 More...
 
real(kind=kind_phys), parameter con_sqrt3 =1.732051e+0
 quare root of 3 More...
 
Geophysics/Astronomy constants
real(kind=kind_phys), parameter con_rerth =6.3712e+6
 radius of earth ( \(m\)) More...
 
real(kind=kind_phys), parameter con_g =9.80665e+0
 gravity ( \(m/s^{2}\)) More...
 
real(kind=kind_phys), parameter con_omega =7.2921e-5
 ang vel of earth ( \(s^{-1}\)) More...
 
real(kind=kind_phys), parameter con_p0 =1.01325e5
 standard atmospheric pressure ( \(Pa\)) More...
 
real(kind=kind_phys), parameter con_solr_old =1.3660e+3
 solar constant ( \(W/m^{2}\))-Liu(2002) More...
 
real(kind=kind_phys), parameter con_solr =1.3608e+3
 solar constant ( \(W/m^{2}\))-nasa-sorce Tim(2008) More...
 
Thermodynamics constants
real(kind=kind_phys), parameter con_rgas =8.314472
 molar gas constant ( \(J/mol/K\)) More...
 
real(kind=kind_phys), parameter con_rd =2.8705e+2
 gas constant air ( \(J/kg/K\)) More...
 
real(kind=kind_phys), parameter con_rv =4.6150e+2
 gas constant H2O ( \(J/kg/K\)) More...
 
real(kind=kind_phys), parameter con_cp =1.0046e+3
 spec heat air at p ( \(J/kg/K\)) More...
 
real(kind=kind_phys), parameter con_cv =7.1760e+2
 spec heat air at v ( \(J/kg/K\)) More...
 
real(kind=kind_phys), parameter con_cvap =1.8460e+3
 spec heat H2O gas ( \(J/kg/K\)) More...
 
real(kind=kind_phys), parameter con_cliq =4.1855e+3
 spec heat H2O liq ( \(J/kg/K\)) More...
 
real(kind=kind_phys), parameter con_csol =2.1060e+3
 spec heat H2O ice ( \(J/kg/K\)) More...
 
real(kind=kind_phys), parameter con_hvap =2.5000e+6
 lat heat H2O cond ( \(J/kg\)) More...
 
real(kind=kind_phys), parameter con_hfus =3.3358e+5
 lat heat H2O fusion ( \(J/kg\)) More...
 
real(kind=kind_phys), parameter con_psat =6.1078e+2
 pres at H2O 3pt ( \(Pa\)) More...
 
real(kind=kind_phys), parameter con_t0c =2.7315e+2
 temp at 0C (K) More...
 
real(kind=kind_phys), parameter con_ttp =2.7316e+2
 temp at H2O 3pt (K) More...
 
real(kind=kind_phys), parameter con_tice =2.7120e+2
 temp freezing sea (K) More...
 
real(kind=kind_phys), parameter con_jcal =4.1855E+0
 joules per calorie More...
 
real(kind=kind_phys), parameter con_rhw0 =1022.0
 sea water reference density ( \(kg/m^{3}\)) More...
 
real(kind=kind_phys), parameter con_epsq =1.0E-12
 min q for computing precip type More...
 
Secondary constants
real(kind=kind_phys), parameter con_rocp =con_rd/con_cp
 
real(kind=kind_phys), parameter con_cpor =con_cp/con_rd
 
real(kind=kind_phys), parameter con_rog =con_rd/con_g
 
real(kind=kind_phys), parameter con_fvirt =con_rv/con_rd-1.
 
real(kind=kind_phys), parameter con_eps =con_rd/con_rv
 
real(kind=kind_phys), parameter con_epsm1 =con_rd/con_rv-1.
 
real(kind=kind_phys), parameter con_dldt =con_cvap-con_cliq
 
real(kind=kind_phys), parameter con_xpona =-con_dldt/con_rv
 
real(kind=kind_phys), parameter con_xponb =-con_dldt/con_rv+con_hvap/(con_rv*con_ttp)
 
Other Physics/Chemistry constants (source: 2002 CODATA)
real(kind=kind_phys), parameter con_c =2.99792458e+8
 speed of light ( \(m/s\)) More...
 
real(kind=kind_phys), parameter con_plnk =6.6260693e-34
 planck constant ( \(J/s\)) More...
 
real(kind=kind_phys), parameter con_boltz =1.3806505e-23
 boltzmann constant ( \(J/K\)) More...
 
real(kind=kind_phys), parameter con_sbc =5.670400e-8
 stefan-boltzmann ( \(W/m^{2}/K^{4}\)) More...
 
real(kind=kind_phys), parameter con_avgd =6.0221415e23
 avogadro constant ( \(mol^{-1}\)) More...
 
real(kind=kind_phys), parameter con_gasv =22413.996e-6
 vol of ideal gas at 273.15K, 101.325kPa ( \(m^{3}/mol\)) More...
 
real(kind=kind_phys), parameter con_amd =28.9644
 molecular wght of dry air ( \(g/mol\)) More...
 
real(kind=kind_phys), parameter con_amw =18.0154
 molecular wght of water vapor ( \(g/mol\)) More...
 
real(kind=kind_phys), parameter con_amo3 =47.9982
 molecular wght of o3 ( \(g/mol\)) More...
 
real(kind=kind_phys), parameter con_amco2 =44.011
 molecular wght of co2 ( \(g/mol\)) More...
 
real(kind=kind_phys), parameter con_amo2 =31.9999
 molecular wght of o2 ( \(g/mol\)) More...
 
real(kind=kind_phys), parameter con_amch4 =16.043
 molecular wght of ch4 ( \(g/mol\)) More...
 
real(kind=kind_phys), parameter con_amn2o =44.013
 molecular wght of n2o ( \(g/mol\)) More...
 
real(kind=kind_phys), parameter con_thgni =-38.15
 temperature the H.G.Nuc. ice starts More...
 
Miscellaneous physics related constants (For WSM6; Moorthi - Jul 2014)
real(kind=kind_phys), parameter rlapse = 0.65e-2
 density of water (kg/m^3) More...
 
real(kind=kind_phys), parameter cb2mb = 10.0
 density of water (kg/m^3) More...
 
real(kind=kind_phys), parameter pa2mb = 0.01
 density of water (kg/m^3) More...
 
real(kind=kind_phys), parameter rhowater = 1000.
 density of water (kg/m^3) More...
 
real(kind=kind_phys), parameter rhosnow = 100.
 density of snow (kg/m^3) More...
 
real(kind=kind_phys), parameter rhoair = 1.28
 density of air near surface (kg/m^3) More...