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CSR TELLUS GRACE Level-3 Monthly Ocean Bottom Pressure Anomaly Release 6.0 version 03 in netCDF/ASCII/GeoTIFF Formats

The CSR monthly ocean bottom pressure grids are given as equivalent water thickness changes derived from GRACE time-variable gravity observations during the specified timespan in ASCII/netCDF/GeoTIFF formats. The Equivalent water thickness represent sea floor pressure changes due to the integral effect of ocean and atmosphere processes, including global mean ocean bottom pressure changes (mean ocean mass and mean atmosphere mass over the global oceans). The Level-2 GAD product has been added back, a glacial isostatic adjustment (GIA) correction has been applied, and standard corrections for geocenter (degree-1) and C20 (degree-20) are incorporated. Post-processing filters (i.e., de-striping and spatial smoothing) have been applied to reduce correlated errors. For the RL06 version, all GRACE products in the ASCII format have adopted the YAML encoding header, which is in full compliance with the PO.DAAC metadata best practices. Version 02 (v02) of the ocean bottom pressure data has resolved a processing inconsistency issue in the version 01 files for both GRACE and GRACE-FO. This inconsistency resulted in erroneous leakage corrections, in particular near GIA-affected regions. Interior ocean data points (i.e., more than 1000 km away from coastlines) were minimally affected.

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