Virtual Ionosphere, Thermosphere, Mesosphere Observatory (VITMO)
DGRF/IGRF Geomagnetic Field Model 1900 - 2015 and Related Parameters
This page enables the computation of International Geomagnetic Reference Field (IGRF) parameter profiles in altitude, (geographic) latitude, longitude, or year. The parameters include the magnetic field strength and vector components, the magnetic inclination and declination angles and the L value.
Note:this model does not include external sources!

NEW: March 15, 2010: Interface has been updated to IGRF Version 11 (1945-2015).
NEW: April 30, 2010: The software has been updated and now extends back to 1900

* Go to the description of DGRF/IGRF model and source codes

*How to get model data from command line

* Select Year:
     Year(1945 - 2015):
* Select Coordinates
    Latitude(deg.,from -90. to 90.): Longitude(deg.,from 0. to 360.):
    Height (km, from 0. to 30000.):
* Select a Profile type and it parameters:
          Start Stop Stepsize 
*Select output form:
List model data
Create model data file in ASCII format  for downloading
List model data in XML format
Create model data file XML format for downloading
Plot model data 
      Note 1: The first selected parameter below always will be along the X-axis, the other selections will be along Y-axis.
              (e.g. if you want a Height profile, you may specify Height as the first parameter in the listing below.)     
      Note 2: User may get scatter plot if he specifies any two parameters below and changes the "connect type"  
              in the "Advanced plot selections" to "show points only"
* Select desired output parameters
Independent Variables
Year
Height, km
Geocentric Latitude, deg.
Geocentric Longitude, deg.
IGRF Model Parameters
Dipole Moment, nT
B_total, nT
B_total/B_equator
B_north, Geographical, nT
B_east, Geographical, nT
B_down, nT
Magnetic Inclination, deg
Magnetic Declination, deg.
L_value, Re
Quality flag (=1 L and B0 correct; =2 wrong; =3 approx. used)

Advanced plot selections (optional)
Connect Type: Character size(0.5-2.0)
Plot Symbol: Symbol Size(0.1-4.0):
Image size (pixels):X: Y:

The 9th Generation International Geomagnetic Reference Field
Send questions about this model, to Dr. Dieter Bilitza, E-mail: dieter.bilitza-1@nasa.gov.
Send questions about WWW access to this model to Dr. Natalia Papitashvili, E-mail: Natalia.E.Papitashvili@nasa.gov,
Mail Code 672, NASA/Goddard Space Flight Center, Greenbelt, MD 20771
NASA Official: Dr. Robert McGuire, Head of the Space Physics Data Facility