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Table 3 Mean of the rms differences (in nT/year) between GVO SV series and GCV cubic spline fits. Results are shown for both the CHAOS-6-x9 and IGRF-13 calibrated CryoSat-2 datasets, and for GVO SV series derived using Swarm and CHAMP data

From: Applications for CryoSat-2 satellite magnetic data in studies of Earth’s core field variations

 

All

Polar

Non-polar

CryoSat-2 CHAOS-6-x9 calibrated

 Mean \(\sigma _r\)

3.38

3.98

3.17

 Mean \(\sigma _{\theta }\)

3.76

4.92

3.36

 Mean \(\sigma _{\phi }\)

2.85

4.77

2.17

 Mean \(\sigma _{F}\)

3.48

4.04

3.28

CryoSat-2 IGRF-13 calibrated

 Mean \(\sigma _r\)

3.38

3.78

3.24

 Mean \(\sigma _{\theta }\)

3.54

4.20

3.31

 Mean \(\sigma _{\phi }\)

2.77

4.64

2.11

 Mean \(\sigma _{F}\)

3.36

3.91

3.17

CHAMP

 Mean \(\sigma _r\)

2.49

2.76

2.40

 Mean \(\sigma _{\theta }\)

2.14

3.61

1.62

 Mean \(\sigma _{\phi }\)

1.80

2.76

1.46

 Mean \(\sigma _{F}\)

1.78

2.79

1.43

Swarm

 Mean \(\sigma _r\)

0.91

1.33

0.76

 Mean \(\sigma _{\theta }\)

1.06

1.95

0.75

 Mean \(\sigma _{\phi }\)

1.58

2.06

1.41

 Mean \(\sigma _{F}\)

0.89

1.34

0.73