Abstract's details
Improvement of the Arctic Ocean Bathymetry and Regional Tide Atlas – first results from the CP4O initiative
CoAuthors
Event: 2017 Ocean Surface Topography Science Team Meeting
Session: Tides, internal tides and high-frequency processes
Presentation type: Type Poster
Contribution: not provided
Abstract:
CryoSat Plus for Oceans (CP4O) is a project under the ESA STSE program which aims to develop and evaluate new ocean products from CryoSat data and so maximize the scientific return of CryoSat over oceans. The main focus of CP4O has been on the additional measurement capabilities that are offered by the SAR mode of the SIRAL altimeter, with further work in developing improved geophysical corrections.
The Arctic Ocean is a challenging region, because of its complex and not well-documented bathymetry, together combined with the intermittent presence of sea ice and the fact that the in situ tidal observations are scarce at such high latitudes. The current initiative initially addresses the bathymetry in the Arctic in attempting to improve altimetric bathymetry using the near 7 years of Cryosat-2 high quality and high resolution ”geodetic” SAR altimetry all the way up to 88N. Subsequently the project progresses to use Cryosat-2 in TWO ways for improved ocean tide modelling in the Arctic Ocean. One is to use Cryosat-2 improved bathymetry, the second is to use Cryosat-2 derived harmonic tidal constituents for assimilation into a regional tide model.
The first evaluation of existing bathymetry in the Arctic (R-TOPO2, IBCAO etc) will be described in this presentation along with the methodology to derive bathymetry from high resolution gravity. With improved gravity being the basis for improved bathymetry we present the first gravity results from DTU17 in the Arctic ocean and evaluate this against existing marine data sources.
The first evaluate of existing bathymetry in the Arctic (R-TOPO2, IBCAO etc) will be performed in this presentation along with the methodology to derive bathymetry from high resolution gravity. With improved gravity being the fundament for improved bathymetry we present the first gravity results from DTU17 in the Arctic ocean and evaluate this against existing marine data sources.
The Arctic Ocean is a challenging region, because of its complex and not well-documented bathymetry, together combined with the intermittent presence of sea ice and the fact that the in situ tidal observations are scarce at such high latitudes. The current initiative initially addresses the bathymetry in the Arctic in attempting to improve altimetric bathymetry using the near 7 years of Cryosat-2 high quality and high resolution ”geodetic” SAR altimetry all the way up to 88N. Subsequently the project progresses to use Cryosat-2 in TWO ways for improved ocean tide modelling in the Arctic Ocean. One is to use Cryosat-2 improved bathymetry, the second is to use Cryosat-2 derived harmonic tidal constituents for assimilation into a regional tide model.
The first evaluation of existing bathymetry in the Arctic (R-TOPO2, IBCAO etc) will be described in this presentation along with the methodology to derive bathymetry from high resolution gravity. With improved gravity being the basis for improved bathymetry we present the first gravity results from DTU17 in the Arctic ocean and evaluate this against existing marine data sources.
The first evaluate of existing bathymetry in the Arctic (R-TOPO2, IBCAO etc) will be performed in this presentation along with the methodology to derive bathymetry from high resolution gravity. With improved gravity being the fundament for improved bathymetry we present the first gravity results from DTU17 in the Arctic ocean and evaluate this against existing marine data sources.