UA630

[ Name | Synopsis | Arguments | Description | Diagnostics | Common Blocks | Dependencies | See Also | Reported Bugs | Examples ]

Name

Subroutine UA630 - evaluate the atmospheric densities

Synopsis

      RECORD /zgeo/ mpos
      REAL*8        tmass, dens(30), temp(3)
      INTEGER*4     ifail
      
      CALL UA630 (mpos, tmass, dens, temp, ifail) 

Arguments

mpos

Geographic location (GEO) [in]

tmass

Total mass density [out]

dens

Number density of the different species (see note) [out]

temp

Temperature of the neutral elements, electrons and ionized elements [out]

ifail

Error flag (passed by dependents) [out]

Description

The subroutine UA630 interfaces the atmospheric, ionospheric and plasmaspheric model with the UNILIB libray. The subroutine includes also two simple atmospheric models of the total mass density. The different models are selected by arguments matm.katm and matm.kion of the common block UC150. The possible selections are listed in the table below.


matm.katm=1	MSISE-90 atmospheric model
matm.katm=2	Neutral part of the Anderson & Francis model
matm.katm=3	Simple total mass density model "Astrophysical Quantities" (Allen, 1985)
matm.katm=4	Simple Pfitzer total mass density model
matm.kion=1	IRI-90 ionospheric model
matm.kion=2	Ionospheric part of the Anderson & Francis model
matm.kion=3	Simple Pfitzer model of the ionosphere

The temperatures (argument temp) are provided only by the MSISE-90 and IRI-90 models.

One should note that the total mass density and the number densities are only determined for the species listed in argument kspec of common block UC150.

Note

The argument dens of subroutines UA630, UA631, UA632, UA633, UA634 and UA635, the argument cs of subroutines UA634, UA637 and UA638, and the argument uma of common block UC160 have the same synopsis:

            REAL*8  dens(30), cs(30), uma(30)
      

Each indice of both arrays corresponds to a fixed atmospheric constituent. The table below provides the correspondance between indices and constituents.


1 = H	11 = CO2	21 = He+
2 = He	12 = NH3	22 = C+
3 = Ne	13 = CH4	23 = N+
4 = Ar	14 not used	24 = O+
5 = Kr	15 not used	25 = Ne+
6 = Xe	16 = O.	26 = N2+
7 = H2	17 = N.	27 = NO+
8 = N2	18 not used	28 = O2+
9 = O2	19 = e-	29 not used
10 = CO	20 = p+	30 not used

Note that the subroutines, which return the arguments dens or cs, assign the value 0 to array elements which correspond to atmospheric components not treated by the subroutine.

Diagnostics

-63001, geographic position below the Earth's surface

Common Blocks

UC150, atmospheric model description
UC160, general constants

Dependencies

Called by

UA636, evaluate a weighted atmospheric mass

Calls

UM535, geocentric to geodetic transformation
UA631, Anderson and Francis atmosphere
UA632, simple atmospheric density distribution
UA633, IRI-90 ionospheric model
UA634, compute mass density from number density

See also

UA610, select an atmospheric, ionospheric and/or plasmaspheric model
FAQ G.05 Which are the coordinates and units used ?

Reported Bugs

• In version 2.00 and earlier, the local time was improperly passed to both MSISE and IRI-90 models by the subroutines UA632 and UA633, respectively. The bug is fixed since version 2.01.

Examples

None