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. 2021 Sep 30;43(1):5–39. doi: 10.1007/s10712-021-09656-2

Table 3.

Observed Stokes coefficients (no units) of gravity variations of degree 2 and contribution from core processes

ΔC20 ΔC21, ΔS21 ΔC22, ΔS22
Decadal 6 year Decadal 6 year Decadal 6 year
Observed 1 0.5 0.5 0.2 0.5 0.2
CMB pressure 0.1 0.01 0.05 0.005 0.05 0.005
Density anomalies 0.05 0.005 0.025 0.0025 0.025 0.0025
Inner core rotation 0.2 0.006
Inner core tilt 0.025 0.0025

All numerical values are multiplied by a factor 10-10. To retrieve amplitudes in units of nGal, numerical values for m=0, 1 and 2 should be multiplied by 6.59×1012 (for the amplitude at the poles), 1.14×1013 and 5.70×1012, respectively

Set to half of the contribution from CMB pressure based on the results in Dumberry (2010)

Not a prediction, but assuming an inner core tilt generating a decadal (6 year) polar motion of 1 (0.1) mas