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These pages display PACE or AACGM magnetic coordinate grid on the geographical grid. The PACE coordinate system is an invariant magnetic coordinate system, e.g., all points on the same magnetic latitude and longitude are located on the same field line. It was originally developed for SuperDARN radars conjugate studies (PACE = Polar Anglo-American Conjugate Experiment) but it turns out that this coordinate system is ideal for organizing many low altitude observations. Partly to reflect its multipurpose utility, it was later renamed to AACGM (Altitude Adjusted Corrected Geo-Magnetic) coordinate system. The full description is given in "A new magnetic coordinate system for conjugate studies at high latitudes", K. B. Baker and S. Wing, Journal of Geophysical Research, Vol. 94, pp. 9139-9143, July, 1989.
You must be using a web browser that supports frames and has Java enabled to use this service. Click on the CONTINUE button below to go to the next page. This page contains a form to help you describe how you want the plot to be constructed. Once the information has been entered, click on the "Update" button to generate the plot. The plot will show the geomagnetic PACE coordinates displayed on top of the geologic coordinates.
It takes several seconds to receive your plots. Please be patient.
Thee geomagnetic contours, and the use of AAGCM throughout our web site, has been supported by NSF ATM9819705 (Simon Wing).
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