Mathematics – Logic
Scientific paper
Jul 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004georl..3113310c&link_type=abstract
Geophysical Research Letters, Volume 31, Issue 13, CiteID L13310
Mathematics
Logic
68
Global Change: Water Cycles (1836), Hydrology: Hydrologic Budget (1655), Oceanography: Physical: Sea Level Variations
Scientific paper
Monthly estimates of the Earth's gravitational field from the GRACE mission are used to construct a time-series of global mean ocean mass variations between August 2002 and December 2003. This time-series is compared to a mean climatology determined from satellite altimeter measurements of global mean sea level corrected for the steric variation. The GRACE observations show a seasonal exchange of water mass with the continents of the same magnitude (~8.5 mm) and phase (maximum in early- to mid-October) as the steric-corrected altimetry. This is one of the first direct validations over the ocean of the primary GRACE science mission to measure time-variable transports of water mass in the Earth system, and it suggests that GRACE data can be used to measure non-steric mean sea level variations which is important for climate change studies.
Chambers Don P.
Nerem Steven R.
Wahr John
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