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Accuracy assessment of ocean tide models around Antarctica


King, MA and Padman, L, Accuracy assessment of ocean tide models around Antarctica, Geophysical Research Letters, 32, (23) pp. 1-4. ISSN 0094-8276 (2005) [Refereed Article]

DOI: doi:10.1029/2005GL023901


Accurate ocean fide models for the circum-Antarctic seas are required to remove unwanted signals from floating ice elevation and space-borne, time-variable gravity measurements (e.g., GRACE). We present accuracy assessments for several global (CSR4, FES2004, FES99, GOT00.2, NAO.99b, TPXO6.2) and Antarctic (CADA00.10 and CATS02.01) ocean tide models using coastal and pelagic tide gauges, gravimetric data and GPS records of ice shelf surface elevation. The accuracies of CSR4 and NAO.99b are poor in the ice shelf regions. The optimum model for the entire circum-Antarctic seas is TPXO6.2, with a root-mean-square deviation of ∼5-7 cm, ∼40% lower than the next best model, FES2004. The main exception is the Filchner-Ronne Ice Shelf where CADA00.10 and CATS02.01 most accurately represent observations from two sites near the Rutford Ice Stream grounding line. Copyright 2005 by the American Geophysical Union.

Item Details

Item Type:Refereed Article
Keywords:Arid regions; Coastal zones; Global positioning system; Gravimetric analysis; Mathematical models; Statistical methods; Tide gages; Ocean tide models; Root-mean square deviation; Time-variable gravity measurement; Oceanography; accuracy assessment
Research Division:Earth Sciences
Research Group:Physical geography and environmental geoscience
Research Field:Physical geography and environmental geoscience not elsewhere classified
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the earth sciences
UTAS Author:King, MA (Professor Matt King)
ID Code:81815
Year Published:2005
Web of Science® Times Cited:47
Deposited By:Geography and Environmental Studies
Deposited On:2013-01-08
Last Modified:2013-01-08

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