Auroral indices AE/AL/AU (Kyoto)

What this shows

The auroral electrojet indices measure the activity of the auroral-oval currents from northern-hemisphere observatories: AU is the largest positive disturbance, AL the largest negative one (substorms drive it down), and AE = AU − AL. The data are delayed: Kyoto's HAPI server runs weeks behind its quicklook page, so the chart ends at the latest available datum, not at the present.

Product fact sheet

Source

WDC Kyoto (HAPI server, best available version)

Original cadence

1 minute; updated daily, weeks behind

Licence

Non-commercial use (WDC Kyoto)

Citation

World Data Center for Geomagnetism, Kyoto, M. Nose, T. Iyemori, M. Sugiura, T. Kamei, A. Matsuoka, S. Imajo, and T. Kotani (2015), Geomagnetic AE index, doi:10.17593/15031-54800

Used by

History and model training

On the provider's site

WDC Kyoto · WDC Kyoto HAPI