A comprehensive model of Earth’s magnetic field determined from 4 years of Swarm satellite observations

Sabaka, Terence J.; Tøffner-Clausen, Lars; Olsen, Nils; Finlay, Christopher C.

doi:10.1186/s40623-018-0896-3

Earth, Planets and Space

Table 5 CIY4 weighted residual statistics

From: A comprehensive model of Earth’s magnetic field determined from 4 years of Swarm satellite observations

Origin	Type	Sun	Comp	QD latitude
				Low			Mid			High
				K	\(\mu _w\)	\(r_w\)	K	\(\mu _w\)	\(r_w\)	K	\(\mu _w\)	\(r_w\)
Alpha	Field	Dark	B	262,005	− 0.664	1.834	1,176,307	0.034	1.506
			P	262,005	0.193	1.914	1,176,307	− 0.025	2.511
			3	262,005	0.038	1.889	1,176,307	0.094	2.445
			F	262,005	− 0.645	1.825	1,176,307	0.045	1.497	710,017	− 0.075	5.553
	NS differences	Dark	N	130,908	0.002	0.201	587,671	0.003	0.313
			E	130,908	0.001	0.334	587,671	0.000	0.360
			C	130,908	− 0.011	0.335	587,671	0.001	0.257
			F	130,865	0.007	0.163	587,645	− 0.010	0.179	354,475	− 0.023	0.937
		Light	N	165,351	− 0.004	0.760	807,365	− 0.006	0.555
			E	165,351	0.002	0.807	807,365	− 0.001	0.839
			C	165,351	− 0.007	0.917	807,365	0.004	0.520
			F	165,349	− 0.002	0.651	807,240	0.010	0.318	683,385	− 0.037	1.095
	NS sums	Dark	N	130,908	− 1.175	3.165	587,671	− 0.714	3.770
			E	130,908	0.270	3.194	587,671	0.018	4.069
			C	130,908	0.016	3.110	587,671	0.105	2.936
			F	130,865	− 1.016	3.035	587,645	− 0.010	2.520	354,475	− 0.101	8.919
		Light	N	165,351	2.154	7.117	807,365	− 0.664	6.885
			E	165,351	− 0.232	12.185	807,365	0.162	9.156
			C	165,351	0.330	7.337	807,365	− 0.005	5.360
			F	165,349	2.113	6.798	807,240	− 0.647	5.039	683,385	− 3.831	12.903
Bravo	Field	Dark	B	259,916	− 0.792	3.013	1,169,539	0.071	2.227
			P	259,916	0.262	2.425	1,169,539	0.086	2.893
			3	259,916	− 0.131	1.999	1,169,539	0.067	3.231
			F	259,916	− 0.819	3.024	1,169,539	0.081	2.224	715,893	0.086	5.437
	NS differences	Dark	N	129,850	0.005	0.195	584,275	0.006	0.316
			E	129,850	− 0.002	0.325	584,275	− 0.002	0.364
			C	129,850	− 0.002	0.330	584,275	0.001	0.256
			F	129,820	0.011	0.164	584,270	− 0.009	0.196	357,613	− 0.023	0.850
		Light	N	163,615	− 0.002	0.671	795,240	− 0.000	0.540
			E	163,615	0.004	0.741	795,240	− 0.002	0.822
			C	163,615	0.005	0.838	795,240	0.001	0.502
			F	163,592	− 0.001	0.565	795,286	0.009	0.303	673,198	− 0.035	0.992
	NS sums	Dark	N	129,850	− 1.211	5.068	584,275	− 0.792	5.476
			E	129,850	0.366	3.972	584,275	0.232	4.702
			C	129,850	− 0.220	3.104	584,275	0.016	3.406
			F	129,820	− 1.173	4.931	584,270	0.162	3.650	357,613	0.122	8.862
		Light	N	163,615	2.341	8.171	795,,240	− 0.241	7.909
			E	163,615	− 0.506	12.955	795,,240	− 0.253	9.850
			C	163,615	0.093	7.026	795,,240	− 0.121	5.684
			F	163,592	2.199	7.662	795,286	− 0.654	5.681	673,198	− 3.838	12.618

The \(\mu _w\) and \(r_w\) are in units of nT

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