GRACE, ITG-Grace2010, de-aliasing, high-frequency sea level, ocean bottom pressure
Digital Object Identifier (DOI)
 The sub-monthly portion of a recent daily-resolution GRACE data set (ITG-Grace2010) is evaluated over the ocean by comparing with the high-frequency component of sea level variability measured by satellite altimetry. The current Atmosphere and Ocean De-aliasing (AOD) model used to remove the high-frequency non-tidal ocean mass variations in GRACE data processing is also assessed. We demonstrate that the OMCT-based AOD model does not adequately represent the true sub-monthly variability in non-tidal ocean mass variability, but that ITG-Grace2010 does. The differences are not small, and indicate that a new model, or a data set derived from sub-monthly GRACE information, should be considered for de-aliasing in future GRACE processing.
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Citation / Publisher Attribution
Geophysical Research Letters, v. 38, issue 17, art. L17608
Copyright 2011 by the American Geophysical Union.
Scholar Commons Citation
Bonin, Jennifer A. and Chambers, D. P., "Evaluation of High-frequency Oceanographic Signal in GRACE Data: Implications for De-aliasing" (2011). Marine Science Faculty Publications. 1374.