Spherical harmonic coefficients that represent the sum of the ATM (or GAA) and OCN (or GAB) coefficients during the specified timespan. These coefficients represent anomalous contributions of the non-tidal dynamic ocean to ocean bottom pressure, the non-tidal atmospheric surface pressure over the continents, the static contribution of atmospheric pressure to ocean bottom pressure, and the upper-air density anomalies above both the continents and the oceans. The anomalous signals are relative to the mean field from 2003-2014.

Version History:

19 September 2024:
Release of Version 6.3. This is an update of Version 6.1 of the same data set (see changelog for details). Note that Version 6.2 was skipped to ensure consistent version numbering within the GRACE-FO Science Data System.

27 April 2022:
Release of Version 6.1. This is an update of Version 6.0 of the same data set (see changelog for details).

12 June 2019:
Initial release of the data (Version 6.0).

All changes and updates are documented in the changelog available via the data download section (ftp://isdcftp.gfz-potsdam.de/grace-fo/Level-2/GFZ).