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<div>The USGS Geomagnetism Program's Adjusted Data (aka "Provisional" by INTERMAGNET) provides near real time absolutely calibrated and geographically oriented geomagnetic observations. These calibration parameters are usually updated on the first of each month
in order to satisfy geomagnetic observatory standards for accuracy and quality control. Updates are deployed at midnight UTC, and may result in noticeable baseline shifts for observatories whose sensor response characteristics may have changed substantially
since the last such update, or in rare cases, whose actual sensor has been altered or replaced since the last update. To view the results of this month's update, go to:
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<div><a href="https://geomag.usgs.gov/plots/?timeRangeType=custom&endTime=2022-02-01T00:30:00.000Z&startTime=2022-01-31T23:30:00.000Z&type=adjusted&scale=Trace" title="https://geomag.usgs.gov/plots/?timeRangeType=custom&endTime=2022-02-01T00:30:00.000Z&startTime=2022-01-31T23:30:00.000Z&type=adjusted&scale=Trace">https://geomag.usgs.gov/plots/?timeRangeType=custom&endTime=2022-02-01T00:30:00.000Z&startTime=2022-01-31T23:30:00.000Z&type=adjusted&scale=Trace</a><br>
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<div>Noteworthy issues to report in this notice:<br>
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<li>Deadhorse <b>(DED) Adjusted data processing remains offline</b> because no reliable calibration measurements have been made for over a year and a half.</li><li>Guam <b>(GUA) Adjusted data processing has been taken offline</b> because we have been unable to reestablish communication with it for over a month. Remote efforts to remedy this situation are ongoing. Also, prior to the loss of communication, the data
returned was noisy due to nearby construction. For these reasons it was decided that, once communication is reestablished, multiple absolute measurements should be taken to carefully re-establish the calibration baselines. If this happens before the end of
the month there may be an out-of-sequence reactivate of the GUA adjusted data processing.
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