NSSDC Offers WWW-Available CGM Coordinate Transformations
Volume 11, Number 3, September 1995
By Natalia Papitashvili and Joseph King
NSSDC has created a new World Wide Web (WWW) page offering the ability to do
coordinate transformations between Corrected GeoMagnetic (CGM) and Geographic
coordinate systems. CGM coordinates are frequently used in studies of
ionosphere-magnetospheric coupling processes. The WWW page enables the users
to specify their time and altitude of interest. They then specify a latitude
and longitude in one coordinate system and are provided the latitude and
longitude in the other system. Alternatively, they can click on a point on a
world map and be provided latitude and longitude in both coordinate systems.
In both cases, users are also provided additional parameters such as the
Earth-surface footpoints of the magnetic field line passing through the
This WWW page is envisioned as the first of a family of new WWW pages offering transformations among other magnetosphere-relevant and heliosphere-relevant coordinate systems; access to and executability of selected atmospheric, ionospheric, and magnetospheric models; and heliospheric spacecraft trajectory information.
The new CGM page is at http://nssdc.gsfc.nasa.gov/space/cgm/cgm.html. The future families of pages referenced will become accessible at http://nssdc.gsfc.nasa.gov/space.
GSFC organizational page
Curators: Erin Gardner
and Miranda Beall
Responsible Official: Dr. Joseph H. King, Code 633
Last Revised: 04 Dec 1996 [EDG]