Forecasting of Ionospheric Total Electron Content Data Using Multivariate Deep LSTM Model for Different Latitudes and Solar Activity

Table 1

Exogenous parameters used for the LSTM model.

Selected parameters	Units	Symbols used
Solar flux F10.7	sfu (10^−22 Wm^−2·Hz^−1)	F10.7
Disturbance storm time index	nT	Dst
IMF	nT
IMF	nT
Plasma speed	m/s	Vp
Proton density	n/cm^3	Np
Planetary index, Kp	0–9	Kp
Planetary index, Ap	nT	Ap
Time of the day (sine and cosine components)	hour	T