Fig. 1: An overview of the interplanetary conditions and geomagnetic indices on 20th August 2014. | Nature Communications

Fig. 1: An overview of the interplanetary conditions and geomagnetic indices on 20th August 2014.

From: A space hurricane over the Earth’s polar ionosphere

Fig. 1

a The IMF components in geocentric solar magnetosphere (GSM) coordinates; b the solar wind number density and speed; c the solar wind dynamic pressure, PDyn; d the provisional SYM-H geomagnetic index (from 6 stations); and e the provisional auroral electrojet geomagnetic indices (from 11 stations): red and blue lines are for AU and AL. Interplanetary data is measured by the Time History of Events and Macroscale Interactions during Substorms (THEMIS)44 B satellite (in the moon orbit), and has been lagged by 9.5 min to the dayside magnetopause.

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