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t96

Category

SPAPT

Function

Calculates the T96 magnetic field model on a given grid.

Syntax


GSMField = t96(Inputfile, MHDTime, LFMGrid, Linenumber);

Inputs
Name Type Default Description
Inputfile string none input file - see Functional Details
MHDTime vector none input MHD time
LFMGrid field none LFM grid points
Linenumber integer none linenumber from a loop

Outputs
Name Type Description
GSMField field GSM magnetic field 3 vector
Lastlinenumber integer that matches MHDTime

Functional Details

This module reads in a 'T96.input' file for all valid MHD times in a run.
It takes a MHD time and interpolates through the input field to find the correct inputs.
The T96 model field is calculated from sources of the geomagnetic field at specific points in space.

Inputfile

contains 8 columns of the following data
yyyy 4 digit year
doy day of year
hh.hhhh decimal hour
swp solar wind pressure [nP]
Dst [nT]
By [nT]
Bz [nT]
DipAngle earth's dipole tilt angle [radian]

MHDTime

gets the input from yrdayhr

LFMGrid

contains the grid points on which the T96 field is computed.

Linenumber

is the last line number of the input file that matched the MHD time.

More about the T96.input file:
An example T96.input file is given here. The values and times contained in the input file must be propagated from the spacecraft (WIND, ACE) to the nose of the magnetosphere.

Example Visual Programs

T96.net

See Also

 t01,  yrdayhr


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