Ionospheric Summary and Forecast

Ionospheric Summary

(last updated 22 Jan 2019 23:30 UT)

Date T index 22 Jan -20 Observed Australian Regional MUFs Cocos Island Region: Depressed by 15% during local day. No data available during local night. Niue Island Region: Depressed by 45% during local day. Near predicted monthly values during local night. Depressed by 25% after local dawn. Northern Australian Region: Depressed by 35% during local day. Near predicted monthly values during local night. Southern Australian Region: Depressed by 15% during local day. Near predicted monthly values during local night. Antarctic Region (Casey/Scott Base/Davis/Mawson): Near predicted monthly values over the UT day. Monthly T index: Month T index Dec -32 Jan -12 Feb -13

Ionospheric Forecast

(last updated 22 Jan 2019 23:30 UT)

Date T index MUFs 23 Jan -20 Near predicted monthly values 24 Jan -30 Near predicted monthly values 25 Jan -20 Near predicted monthly values COMMENT: On UT day 22 January, MUFs were moderately depressed to mostly near predicted monthly values across the Australian region. Sporadic E layers were seen across the Australian region. Near predicted to moderately depressed MUFs are expected for today (UT day 23 January), as a consequence of very low levels of ionising radiation from the Sun. Slightly stronger depressions are expected on UT day 24 January as an aftermath of the forecasted geomagnetic activity associated with the approaching coronal hole effects.