DNSC08 mean sea surface and mean dynamic topography models
The Danish National Space Center data set DNSC08 mean sea surface (MSS) is a new enhanced mapping of the mean sea surface height of the worlds oceans, derived from a combination of 12 years of satellite altimetry from a total of eight different satellites covering the period 1993-2004. It is the fir...
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Online Access: | https://orbit.dtu.dk/en/publications/1f597f8e-ad8c-40b6-be27-b881f518de3e https://doi.org/10.1029/2008JC005179 |
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ftdtupubl:oai:pure.atira.dk:publications/1f597f8e-ad8c-40b6-be27-b881f518de3e 2024-09-09T19:26:27+00:00 DNSC08 mean sea surface and mean dynamic topography models Andersen, Ole Baltazar Knudsen, Per 2009 https://orbit.dtu.dk/en/publications/1f597f8e-ad8c-40b6-be27-b881f518de3e https://doi.org/10.1029/2008JC005179 eng eng https://orbit.dtu.dk/en/publications/1f597f8e-ad8c-40b6-be27-b881f518de3e info:eu-repo/semantics/restrictedAccess Andersen , O B & Knudsen , P 2009 , ' DNSC08 mean sea surface and mean dynamic topography models ' , Journal of Geophysical Research: Atmospheres , vol. 114 . https://doi.org/10.1029/2008JC005179 article 2009 ftdtupubl https://doi.org/10.1029/2008JC005179 2024-07-29T23:50:17Z The Danish National Space Center data set DNSC08 mean sea surface (MSS) is a new enhanced mapping of the mean sea surface height of the worlds oceans, derived from a combination of 12 years of satellite altimetry from a total of eight different satellites covering the period 1993-2004. It is the first global MSS without a polar gap including all of the Arctic Ocean by including laser altimetry from the ICESat mission. The mean dynamic topography (MDT) is the quantity that bridges the geoid and the mean sea surface constraining large-scale ocean circulation. Here we present a new high-resolution 1 min global MDT called DNSC08 MDT derived from the slightly smoothed difference between the DNSC08 MSS and the EGM2008 geoid. The derivation and quality control of the new DNSC08 MSS and DNSC08 MDT is presented in this paper along with suggestions for time period standardization of the MSS and MDT models. This way a consistent modeling of the interannual sea level variability is carried out before different MSS and MDT models are compared. Altimetric derived physical MSS can be converted into an "inverse barometer corrected MSS'' by correcting the altimeter range for the inverse barometer effect of the atmosphere on the sea surface height. It is demonstrated that it is important to choose the right version of the MSS when comparing with hydrodynamic models and GPS measured tide gauges. Article in Journal/Newspaper Arctic Arctic Ocean Technical University of Denmark: DTU Orbit Arctic Arctic Ocean Journal of Geophysical Research 114 C11 |
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Open Polar |
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Technical University of Denmark: DTU Orbit |
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ftdtupubl |
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English |
description |
The Danish National Space Center data set DNSC08 mean sea surface (MSS) is a new enhanced mapping of the mean sea surface height of the worlds oceans, derived from a combination of 12 years of satellite altimetry from a total of eight different satellites covering the period 1993-2004. It is the first global MSS without a polar gap including all of the Arctic Ocean by including laser altimetry from the ICESat mission. The mean dynamic topography (MDT) is the quantity that bridges the geoid and the mean sea surface constraining large-scale ocean circulation. Here we present a new high-resolution 1 min global MDT called DNSC08 MDT derived from the slightly smoothed difference between the DNSC08 MSS and the EGM2008 geoid. The derivation and quality control of the new DNSC08 MSS and DNSC08 MDT is presented in this paper along with suggestions for time period standardization of the MSS and MDT models. This way a consistent modeling of the interannual sea level variability is carried out before different MSS and MDT models are compared. Altimetric derived physical MSS can be converted into an "inverse barometer corrected MSS'' by correcting the altimeter range for the inverse barometer effect of the atmosphere on the sea surface height. It is demonstrated that it is important to choose the right version of the MSS when comparing with hydrodynamic models and GPS measured tide gauges. |
format |
Article in Journal/Newspaper |
author |
Andersen, Ole Baltazar Knudsen, Per |
spellingShingle |
Andersen, Ole Baltazar Knudsen, Per DNSC08 mean sea surface and mean dynamic topography models |
author_facet |
Andersen, Ole Baltazar Knudsen, Per |
author_sort |
Andersen, Ole Baltazar |
title |
DNSC08 mean sea surface and mean dynamic topography models |
title_short |
DNSC08 mean sea surface and mean dynamic topography models |
title_full |
DNSC08 mean sea surface and mean dynamic topography models |
title_fullStr |
DNSC08 mean sea surface and mean dynamic topography models |
title_full_unstemmed |
DNSC08 mean sea surface and mean dynamic topography models |
title_sort |
dnsc08 mean sea surface and mean dynamic topography models |
publishDate |
2009 |
url |
https://orbit.dtu.dk/en/publications/1f597f8e-ad8c-40b6-be27-b881f518de3e https://doi.org/10.1029/2008JC005179 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean |
genre_facet |
Arctic Arctic Ocean |
op_source |
Andersen , O B & Knudsen , P 2009 , ' DNSC08 mean sea surface and mean dynamic topography models ' , Journal of Geophysical Research: Atmospheres , vol. 114 . https://doi.org/10.1029/2008JC005179 |
op_relation |
https://orbit.dtu.dk/en/publications/1f597f8e-ad8c-40b6-be27-b881f518de3e |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1029/2008JC005179 |
container_title |
Journal of Geophysical Research |
container_volume |
114 |
container_issue |
C11 |
_version_ |
1809896052193492992 |