Earth Institute Research Projects

Development of a Self-Consistent Model for Spatial and Temporal Variation of Sea Level Integrating Data on Cryospheric Mass Change, Ocean Dynamics, and Solid-Earth Loading

Lead PI: Dr. James L. Davis

Unit Affiliation: Seismology, Geology & Tectonophysics, Lamont-Doherty Earth Observatory (LDEO)

January 2011 - January 2015
Project Type: Research

DESCRIPTION: The team will undertake a series of focused, hypothesis-driven, coordinated investigations with the ultimate goal of developing a space-dependent model for sea-level annual, interannual, and secular variations from 1993 onward that integrates relevant data, circulation and climate of the ocean, and models for responses to climate change.

OUTCOMES: Concluded that Self-attraction and loading of the oceans can explain 0.2 cm2 (16%) of GRACE annual variances and succeed 1 cm2 in some regions. Developed a model for Alaskan glaciers. Showed that near-field tide-gauge records could contain significant information about the spatial distribution of ice loss. The higher-resolution model can successfully capture mass changes estimated in mascon solutions. One manuscript submitted and one published.