Radiation Astronomy Module

This module sets up astronomical quantities for solar radiation calculations. More...

Modules
module	module_radiation_astronomy
	This module sets up astronomy quantities for solar radiation calculations.

Functions/Subroutines
subroutine, public	module_radiation_astronomy::sol_init (me, isolar, solar_file, con_solr, con_solr_old, con_pi)
	This subroutine initializes astronomy process, and set up module constants.
subroutine, public	module_radiation_astronomy::sol_update (jdate, kyear, deltsw, deltim, lsol_chg, me, slag, sdec, cdec, solcon, con_pi, errmsg, errflg)
	This subroutine computes solar parameters at forecast time.
subroutine	module_radiation_astronomy::solar (jd, fjd, con_pi, r1, dlt, alp)
	This subroutine computes radius vector, declination and right ascension of sun, and equation of time.
subroutine, public	module_radiation_astronomy::coszmn (xlon, sinlat, coslat, solhr, im, me, coszen, coszdg)
	This subroutine computes mean cos solar zenith angle over SW calling interval.
subroutine	module_radiation_astronomy::prtime (jd, fjd, dlt, alp, r1, solc)
	This subroutine prints out forecast date, time, and astronomy quantities.

Variables
real(kind=kind_phys)	module_radiation_astronomy::degrad
real(kind=kind_phys)	module_radiation_astronomy::tpi
real(kind=kind_phys)	module_radiation_astronomy::hpi
real(kind=kind_phys)	module_radiation_astronomy::pid12
real(kind=kind_phys), parameter	module_radiation_astronomy::f12 = 12.0
real(kind=kind_phys), parameter	module_radiation_astronomy::f3600 = 3600.0
real(kind=kind_phys), parameter	module_radiation_astronomy::czlimt = 0.0001
real(kind=kind_phys), public	module_radiation_astronomy::solc0
integer	module_radiation_astronomy::isolflg = 10
character(26)	module_radiation_astronomy::solar_fname = ' '
real(kind=kind_phys)	module_radiation_astronomy::sollag =0.0
real(kind=kind_phys)	module_radiation_astronomy::sindec =0.0
real(kind=kind_phys)	module_radiation_astronomy::cosdec =0.0
real(kind=kind_phys)	module_radiation_astronomy::anginc =0.0
real(kind=kind_phys), dimension(12)	module_radiation_astronomy::smon_sav
integer	module_radiation_astronomy::iyr_sav =0
integer	module_radiation_astronomy::nstp =6

Detailed Description

Operational GFS selection for Solar constant value (namelist control parameter - ISOL = 2)
ISOL=0: presribed value = 1366 \(W m^{-2}\) (old)
ISOL=10: prescibed value = 1361 \(W m^{-2}\) (new)
ISOL=1: NOAA old yearly solar constant table with 11-year cycle (range: 1944-2006)
ISOL=2: NOAA new yearly solar constant table with 11-year cycle (range: 1850-2019)
ISOL=3: CMIP5 yearly solar constant table with 11-year cycle (range: 1610-2008)
ISOL=4: CMIP5 monthly solar constant table with 11-year cycle (range: 1882-2008)

Version

NCEP-Radiation_astronomy v5.2 Jan 2013