Virtual Ionosphere, Thermosphere, Mesosphere Observatory (VITMO)Models and Related Algorithms

*DGRF/IGRF Geomagnetic Field Model 1900 - 2020 and Related Parameters

*International Reference Ionosphere - IRI-2007

*International Reference Ionosphere - IRI-2012

* MSIS-E-90 Atmosphere Model

* Corrected Geomagnetic Coordinates and IGRF/DGRF Model Parameters

Send questions about VITMO models to Dr. Dieter Bilitza, E-mail:
Send questions about WWW access to VITMO model to Dr. Natalia Papitashvili, E-mail:,
Mail Code 672, NASA/Goddard Space Flight Center, Greenbelt, MD 20771

NASA Official: Dr. Robert McGuire, Head of the Space Physics Data Facility