Abstract
A continuous and precise track of magnetic field changes over the western hemisphere is available from the Space Environment Services Center in Boulder, Colorado. The satellite‐supported magnetometer network uses specially designed magnetometers deployed at more than 25 strategic and remote sites in Alaska, Canada, Brazil, and several islands in the Pacific Ocean. Data from the devices are ‘sensed’ by instruments aboard two NOAA satellites of the Goes series and transmitted back to Boulder to be available in near real time.The heart of the magnetometer system is a small magnetic field sensor located in a nonmagnetic housing. Information from this sensor is processed by a microcomputer system located some distance away in a small shelter.
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