Table 2 Estimated amplitudes and phases of the annual variations of the geocenter motions obtained from different combination approaches
From: GPS-derived geocenter motion from the IGS second reprocessing campaign
Method and data | X | Y | Z | Refs. | Time span | |||
|---|---|---|---|---|---|---|---|---|
Amp (mm) | Phase (day) | Amp (mm) | Phase (day) | Amp (mm) | Phase (day) | |||
GRACE + OBP-improved | 2.3 | 52 | 2.9 | 327 | 2.9 | 68 | Sun et al. (2017) | 2002.8–2014.6 |
Combination approach | 2.4 | 61 | 2.6 | 333 | 3.2 | 66 | Sun et al. (2017) | 2002.8–2014.6 |
Jason 1/2 Alt. + GRACE | 2.2 | 54 | 2.7 | 333 | 3.5 | 62 | Rietbroek et al. (2014) | 2002.8–2014.6 |
GNSS Unified | 2.1 | 39 | 3.2 | 346 | 3.9 | 74 | Lavallée et al. (2006) | 1997.2–2004.2 |
KALREF-week 82-site | 2.1 | 45 | 2.7 | 321 | 3.8 | 21 | Wu et al. (2015) | 2002.2–2009.0 |
KALREF + GRACE | 1.3 | 46 | 3.0 | 330 | 3.3 | 26 | Wu et al. (2017) | 2002.2–2009.0 |