Variations of topside ionospheric electron density near the dawn terminator in relation to geomagnetic activity | Journal of Space Weather and Space Climate

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Table 1

Summary of electron densities at 150 km altitude and peak electron densities in the F2 region for the cases in Figures 2, 3 and 4^a.

SZA	λ_m	MLT	n_e (150) (10⁴ cm⁻³)			n_m (F2) (10⁴ cm⁻³)

			Kp = 0–1	Kp = 2–3	Kp = 4–5	Kp = 0–1	Kp = 2–3	Kp = 4–5
70°–90°	50°–55°	4–5	5.42	5.09	4.81	14.83	13.09	11.97
70°–90°	50°–55°	5–6	6.77	6.31	5.93	15.98	14.20	12.73
70°–90°	55°–60°	4–5	6.30	6.00	NC	14.00	12.67	NC
70°–90°	55°–60°	5–6	7.01	7.09	7.25	15.23	13.50	12.42
70°–90°	60°–65°	4–5	6.95	7.66	9.92	13.74	12.06	11.63
70°–90°	60°–65°	5–6	7.49	7.84	8.78	14.68	12.84	11.78
90°–110°	50°–55°	4–5	2.14	2.28	2.55	8.70	7.66	7.62
90°–110°	50°–55°	5–6	1.78	2.07	2.34	8.01	7.20	7.11
90°–110°	55°–60°	4–5	2.48	3.09	3.70	6.88	6.39	6.90
90°–110°	55°–60°	5–6	2.28	2.70	3.02	6.32	5.99	6.05
90°–110°	60°–65°	4–5	3.42	4.44	5.90	6.02	5.87	6.13
90°–110°	60°–65°	5–6	3.45	4.36	5.91	5.29	5.42	6.42
110°–140°	50°–55°	4–5	1.12	1.37	1.68	6.97	6.61	7.75
110°–140°	50°–55°	5–6	1.35	1.66	1.86	6.15	6.13	6.69
110°–140°	55°–60°	4–5	1.70	2.24	3.52	5.19	5.41	6.56
110°–140°	55°–60°	5–6	1.61	2.20	3.72	4.69	4.87	5.87
110°–140°	60°–65°	4–5	2.72	3.78	6.57	4.31	4.74	6.19
110°–140°	60°–65°	5–6	2.53	3.46	NC	4.16	4.42	NC

SZA: solar zenith angle; λ_m: magnetic latitude; MLT: magnetic local time; n_e (150): electron density at 150 km altitude; n_m (F2): peak electron density in the F2 region; NC: not considered because the data group consists of ≤ 30 electron density profiles.

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