Barystatic sea level change observed by satellite gravimetry: 1993-2022.

ABSTRACT: Using time-variable gravity fields determined from satellite laser ranging (SLR) and the Gravity Recovery and Climate Experiment (GRACE) and GRACE Follow-On (GRACE-FO), we derive three decades of barystatic sea level (BSL) change estimates since 1993, providing a long record of satellite gravimetry-based BSL estimates comparable in duration to satellite altimetry. Over the 1993-2022 altimetry era, the BSL change rate is 1.75 ± 0.59 mm/y (2σ) as observed by SLR. The rate increases to 2.16 ± 0.59 mm/y (SLR) and 2.13 ± 0.38 mm/y (GRACE/-FO) over 2003-2022, mainly due to accelerated ice loss in Greenland since the 2000s. The remarkable agreement between SLR and GRACE/-FO estimates over the joint period cross-validates each other, suggesting that both work well in monitoring BSL changes. We als

SUBMITTER: Nie Y 

PROVIDER: S-EPMC12260393 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature