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Earth, Planets and Space

Table 6 Standard deviation (STD) of overall detrended time series of GAO, GRACE-FO-based HAM/CAM (GSM, TWS, MAS land, and MAS global), and SLR-based HAM/CAM series, error of STD (STDerr), correlation coefficients (Corr) between HAM/CAM and GAO, percentage of variance in GAO explained by HAM/CAM (Varexp), and root mean square error (RMSD) of HAM/CAM

From: Evaluation of hydrological and cryospheric angular momentum estimates based on GRACE, GRACE-FO and SLR data for their contributions to polar motion excitation

 

STD (mas)

STDerr (%)

Corr

Varexp (%)

RMSD (mas)

χ1

χ2

χ1

χ2

χ1

χ2

χ1

χ2

χ1

χ2

GAO

4.65

6.42

–

–

–

–

–

–

–

–

GSM

6.38

6.14

37

− 4

 − 0.07

0.53

− 207

9

7.99

5.99

TWS

4.19

2.82

− 10

− 56

0.16

0.40

− 52

16

5.62

5.76

MAS land

4.93

4.28

6

− 33

0.18

0.54

− 75

28

6.03

5.34

MAS global

8.33

5.94

79

− 7

− 0.12

0.15

− 364

− 57

9.83

7.89

SLR

7.85

7.49

69

17

− 0.34

0.43

− 400

− 36

10.20

7.33

  1. Note that the critical value of correlation coefficient for 10 independent points and a 95% confidence level is 0.55, while the standard error of the difference between two correlation coefficients is 0.53
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