Ocean Bottom Pressure Variability
Ocean Bottom Pressure (OBP) variability as observed by GRACE/GRACE-FO is an integrated signal from a number of different processes. The GravIS OBP Level-3 products represent anomalies relative to the long-term mean over the period 2002/04 through 2020/03, provided in terms of cm of equivalent water height.
Gridded OBP Level-3 products are displayed in the spatial plot. These products contain several individual variables which can be selected by clicking on the respective name of a particular variable next to the spatial plot, or by using the corresponding pulldown menu in the spatial plot. The gridded products, provided in NetCDF format, can be downloaded from the ISDC archive, either based on gravity field time series from GFZ or COST-G .
For each selected variable, globally averaged anomalies as well as averaged anomalies for predefined regions (representing areas with similar characteristics based on an ocean model) are displayed in the time series plot. Click on the spatial plot to select a particular region. All available regional averaged OBP time series, provided as CSV files, can be directly downloaded from this site by clicking on the download button above the time series plot.
Further information on the OBP data products and the applied processing scheme is available here as technical note.