Consistency analysis of GRACE and GRACE-FO data in the study of global mean sea level change  

作　　者：Le Chang Wenke Sun 

机构地区：[1]College of Geodesy and Geomatics,Shandong University of Science and Technology,Qingdao,266590,China [2]Key Laboratory of Computational Geodynamics,University of Chinese Academy of Sciences,Beijing,100049,China

出　　处：《Geodesy and Geodynamics》2022年第4期321-326,共6页大地测量与地球动力学（英文版）

基　　金：This research was supported financially by the NNSFC(41774088,41331066,42104084,and 41474059);the Key Research Program of Frontier Sciences CAS(Chinese Academy of Sciences)(QYZDY-SSW-SYS003)。

摘　　要：Global mean sea level(GMSL) change is one of the important indicators of global climate change and is a crucial scientific issue of continuing interest. As satellite altimeter data, the Gravity Recovery and Climate Experiment(GRACE) and Argo continue to be updated, especially with the release of GRACE Follow-On(GRACE-FO) data, making it necessary to combine these latest data to estimate sea level change. Determinations on whether the GRACE and GRACE-FO observation systems provide unbiased global observation data have not been effectively evaluated. Therefore, this research mainly investigated the consistency of GRACE and GRACE-FO observation data in studying GMSL change. By comparing the sum of the GMSL calculated by the two gravity satellites and Argo data with the GMSL calculated by satellite altimeters, the discrepancy between GRACE-FO + Argo and satellite altimeter data is about 7.9 ± 2.3 mm, which is likely derived from the inconsistency between GRACE and GRACE-FO data.

关 键 词：GMSL GRACE GRACE-FO ALTIMETRY ARGO 

分 类 号：P731.23[天文地球—海洋科学] P714.1