Ice sheets and land water mass contributions to interannual and long term regional sea level from GRACE, Insar and regional climate model output

We use 10 years of monthly gravity fields from the GRACE satellite mission to calculate the seasonal, inter-annual and long term regional sea level variability due to changes in ice sheets and land water masses. We determine the relative contribution of each of these components to regional sea level variability and how these contributions change with time. We also calculate how these components contribute to the seasonal, inter-annual and long term global sea level. Finally, we use 40 years of reconstructed ice sheet mass balance from the mass budget method to evaluate ice sheet impact on regional sea level over a longer time period. This work was conducted at the University of California Irvine and at Caltech's Jet Propulsion Laboratory under a contract with the National Aeronautics and Space Administration.