Articles | Volume 14, issue 5
Ocean Sci., 14, 947–957, 2018
https://doi.org/10.5194/os-14-947-2018
Ocean Sci., 14, 947–957, 2018
https://doi.org/10.5194/os-14-947-2018

Technical note 04 Sep 2018

Technical note | 04 Sep 2018

Technical note: Two types of absolute dynamic ocean topography

Peter C. Chu

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Latest update: 12 May 2021
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Short summary
Two types of marine geoid exist with the first type being the average level of sea surface height if the water is at rest (classical definition), and the second type being satellite-determined with the condition that the water is usually not at rest. The associated absolute dynamic ocean topography (DOT) also has two types. Horizontal gradients of the two DOTs are different with the 1st (2nd) type representing the absolute (relative) surface geostrophic currents.