Improvement of the Arctic Ocean Bathymetry and Regional Tide Atlas – first results from the CP4O initiative

Ole Baltazar Andersen (Dr, Denmark)

CoAuthors

Mathilde Cancet (NOVELTIS, France , France); David Cotton (SatOC,, United Kingdom); Jerome Benveniste (ESA ESRIN, Frascati, Italy)

Event: 2017 Ocean Surface Topography Science Team Meeting

Session: Tides, internal tides and high-frequency processes

Presentation type: Type Poster

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.
 

Poster show times:

RoomStart DateEnd Date
Concerto Ballroom Thu, Oct 26 2017,14:00 Thu, Oct 26 2017,18:00
Ole Baltazar Andersen
Dr
Denmark
oa@space.dtu.dk