Thursday, October 1, 2020

The PO.DAAC is pleased to announce the public release of Reconstructed Global Mean Sea Level (GMSL) from GRACE and In Situ observations 1900 to 2018. The dataset was produced by JPL scientist Thomas Frederikse and his colleagues for their recent Nature publication (Frederikse et al., 2020) under funding produced by NASA’s Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program through a project called Heat and Ocean Mass from Gravity ESDR (HOMAGE). More information about GMSL is available from the NASA Sea Level program website; HOMAGE is described further at the MEaSUREs program site.

This dataset provides an annual reconstructed GMSL estimate and corresponding estimates of the contributions from various drivers of sea level change between 1900 and 2018. The reconstructed sea level is based on tide gauge observations aggregated annually using the virtual station method. Sea level change contributions from thermosteric changes, glacier mass changes, terrestrial water storage changes, and changing mass of the Greenland and Antarctic Ice Sheet were estimated by combining GRACE/GRACE-FO observations with long-term estimates based on in situ temperature profiles. The dataset consists of one file in netCDF-4 format conforming to CF metadata conventions. Sea level change relative to the 2002-2019 baseline is provided annually as a one-dimensional time series (119 years). Annual contributions from each source are provided in separate variables in the netCDF file.

This Reconstructed Global Mean Sea Level from GRACE and In Situ 1900 to 2018 dataset is described and discoverable on the PO.DAAC data portal.

DOI: 10.5067/GMSLT-FJPL1

Citation: Frederikse, T.; Landerer, F.; Caron, L.; Adhikari, S.; Parkes, D.; Humphrey V.; Dangendorf, S.; Hogarth, P.; Zanna, L.; Cheng, L.; Wu, Y.. 2020. Reconstructed Global Mean Sea Level from GRACE and In Situ 1900 to 2018. Ver. 1.0. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at

Reference: Frederikse, T., Landerer, F., Caron, L. et al. The causes of sea-level rise since 1900. Nature 584, 393397 (2020).

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