Computer Science – Performance
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufm.g51c0680k&link_type=abstract
American Geophysical Union, Fall Meeting 2010, abstract #G51C-0680
Computer Science
Performance
[1217] Geodesy And Gravity / Time Variable Gravity, [1222] Geodesy And Gravity / Ocean Monitoring With Geodetic Techniques, [4207] Oceanography: General / Arctic And Antarctic Oceanography, [4594] Oceanography: Physical / Instruments And Techniques
Scientific paper
Because missions such as TOPEX/POSEIDON don't extend to high latitudes, Arctic ocean tidal solutions aren't constrained by altimetry data. The resulting errors in tidal models alias into monthly GRACE gravity field solutions at all latitudes. Fortunately, GRACE inter-satellite ranging data can be used to solve for these tides directly. Seven years of GRACE inter-satellite acceleration data are inverted using a mascon approach to solve for residual amplitudes and phases of major solar and lunar tides in the Arctic ocean relative to FES 2004. Simulations are performed to test the inversion algorithm's performance, and uncertainty estimates are derived from the tidal signal over land. Truncation error magnitudes and patterns are compared to the residual tidal signals.
Desai Shailen D.
Killett Bryan
Wahr John M.
Watkins Michael M.
Yuan Di
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