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Science Keywords > EARTH SCIENCE > OCEANS > SEA SURFACE TOPOGRAPHY

Preferred term

SEA SURFACE TOPOGRAPHY  

Definition

  • To measure sea surface height, or surface topography, scientists need to obtain the precise distance between the satellite and the center of the Earth and the precise distance between the satellite and the sea surface. Sea surface height is then calculated by subtracting the distance between the sea surface and the satellite from the distance between the center of the Earth and the satellite. The distance between the satellite and the center of the Earth is obtained by carefully monitoring the satellite position at all times. (en)

Broader concept

Narrower concepts

Change note

  • 2021-05-14 09:15:23.0 [tstevens] Insert Concept add narrower relation (SEA SURFACE TOPOGRAPHY [68f93a0c-1525-4f5a-9545-5d94191a3dbf,603745] - SEA LEVEL [9ac7a1c5-4179-47bc-8589-ebaa90d6cbd1,606942]);
  • 2021-10-21 09:22:43.0 [tstevens] Move Concepts add narrower relation (SEA SURFACE TOPOGRAPHY [68f93a0c-1525-4f5a-9545-5d94191a3dbf,775007] - DYNAMIC TOPOGRAPHY [940550d2-1d9f-4c28-b9ba-857c2dc8ef95,778236]);
  • 2021-10-21 09:24:09.0 [tstevens] Move Concepts delete broader relation (null); add broader relation (SEA SURFACE TOPOGRAPHY [68f93a0c-1525-4f5a-9545-5d94191a3dbf,775007] - SEA ICE [d73e969a-4b66-4713-8d63-fa3cbb1e25e3,774840]);
  • 2021-10-21 09:26:50.0 [tstevens] Insert Concept add narrower relation (SEA SURFACE TOPOGRAPHY [68f93a0c-1525-4f5a-9545-5d94191a3dbf,775007] - MEAN SEA SURFACE [70082342-c777-49e9-88e5-a4a77728d3cc,778239]);
  • 2021-10-22 12:44:26.0 [tstevens] update Definition (To measure sea surface height, or surface topography, scientists need to obtain the precise distance between the satellite and the center of the Earth and the precise distance between the satellite and the sea surface. Sea surface height is then calculated by subtracting the distance between the sea surface and the satellite from the distance between the center of the Earth and the satellite. The distance between the satellite and the center of the Earth is obtained by carefully monitoring the satellite position at all times.); update Definition (https://www.noaa.gov/);
  • 2021-11-02 09:41:11.0 [tstevens] Cut Concepts delete broader relation (null); add broader relation (SEA SURFACE TOPOGRAPHY [68f93a0c-1525-4f5a-9545-5d94191a3dbf,789416] - Trash Can/Science Keywords [c5a4126a-8f0a-4774-9bef-c2a9f9487727,788365]);
  • 2021-11-02 09:41:25.0 [tstevens] Move Concepts delete broader relation (null); add broader relation (SEA SURFACE TOPOGRAPHY [68f93a0c-1525-4f5a-9545-5d94191a3dbf,789416] - OCEANS [91697b7d-8f2b-4954-850e-61d5f61c867d,789226]);

URI

https://gcmd.earthdata.nasa.gov/kms/concept/68f93a0c-1525-4f5a-9545-5d94191a3dbf

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