European Space Agency

Royal Belgian Institute for Aeronomy

um532 - evaluate the external magnetic field

subroutine  um532(r, sla, cla, slo, clo, dbr, dbt, dbp)

external magnetic field

Parameters:

• r [real8,in] :: geocentric radius in Earth radii

• sla [real8,in] :: sine of the geocentric colatitude

• cla [real8,in] :: cosine of the geocentric colatitude

• slo [real8,in] :: sine of the longitude

• clo [real8,in] :: cosine of the longitude

• dbr [real8,out] :: external magnetic field component along “rho”

• dbt [real8,out] :: external magnetic field component along “theta”

• dbp [real8,out] :: external magnetic field component along “phi”

Description

The subroutine um532() is an interface between the UNILIB library and the external magnetic models collected in the package ext530. The selection of the model and the parameters specific to the model are passed through subroutine um532() by the argument mext of common block uc140 .

Diagnostics

None

Common Blocks

• uc140 - magnetic field

• uc160 - general constants

Dependencies

Called by

• um530 - evaluate the magnetic field vector

Calls

• ext530 - set of external magnetic field models

See also

None

Reported Bugs

None

Examples

None

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UNILIB/tags/v3.03