Using GRACE Satellite Acceleration Data to Recover Arctic Ocean Tides

Details Using GRACE Satellite Acceleration Data to Recover Arctic Ocean Tides Using GRACE Satellite Acceleration Data to Recover Arctic Ocean Tides

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufm.g22a..04k&link_type=abstract

American Geophysical Union, Fall Meeting 2008, abstract #G22A-04

Physics

0920 Gravity Methods (1219)

Scientific paper

Arctic ocean tidal solutions are not constrained by altimetry data because missions such as TOPEX/POSEIDON do not extend to high latitudes. The resulting errors in tidal models alias into the monthly GRACE gravity field solutions at all latitudes. Fortunately, it is possible to use the GRACE inter-satellite ranging data to solve for these tides directly. Five years of GRACE inter-satellite acceleration data are inverted to solve for the amplitude and phase of major solar and lunar tides in the Arctic ocean using a mascon approach. The resulting tidal amplitudes are compared to existing tidal models using in-situ data from coastal tide gauges and deep sea bottom pressure recorders. Simulations were performed to verify that the inversion algorithm works as designed.

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