Ground based magnetometers: The workhorse of the magnetospheric-ionospheric community

Statistics – Computation

Scientific paper

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[0525] Computational Geophysics / Data Management, [2409] Ionosphere / Current Systems, [2700] Magnetospheric Physics

Scientific paper

For decades ground based magnetometers have proven to be the workhorse of magnetosphere-ionosphere physics and their importance is indisputable. SuperMAG is the next logical step for the ground magnetometer community to take in the development of a user friendly data service enabling an understanding as well as monitoring of the global electric current system. The data set provided by the ground magnetometer community is truly unique since it provide continuous and nearly global measurement of a fundamental parameter - the ground level magnetic field perturbations. The very strength of this data set also resulted in painstaking and labor-intensive data-handling, which effectively limited research. Analysts faced several inherent complications: confusing or even unknown coordinate systems, a multitude of data artifacts and errors, unknown baselines, and even difficulties obtaining data. These problems have resulted in a serious underutilization of data from magnetometers. In this paper we present a solution to these complications (the SuperMAG initiative) which is a worldwide collaboration of organizations and national agencies that currently operate more than 300 ground based magnetometers. SuperMAG provides easy access to validated ground magnetic field perturbations in the same coordinate system, identical time resolution and with a common baseline removal approach. The purpose of SuperMAG it to help scientists, teachers, students and the general public have easy access to measurements of the Earth's magnetic field. The presentation will focus on current and future SuperMAG capabilities illustrating the potential for now-casting and eventually forecasting.

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