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Comparison of TanDEM-X Surface Velocity Measurements and Hydrodynamic Model Data in the Baltic Sea

Suchandt, Steffen and Lehmann, Andreas and Pleskachevsky, Andrey (2017) Comparison of TanDEM-X Surface Velocity Measurements and Hydrodynamic Model Data in the Baltic Sea. ESA Baltic from Space Workshop, 29.-31. Mär. 2017, Helsinki, Finnland.

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Official URL: http://old.esaconferencebureau.com/docs/default-source/baltic/poster-list-nbsp-.pdf?sfvrsn=0

Abstract

The ocean surface boundary layer constitutes the interface between the atmosphere and the deep ocean. Interaction between both is described by fluxes, whose correct estimation is strongly influenced by surface current and waves. It is important to include these effects into ocean circulation or coupled atmosphere-ocean models which are used e.g. in climate variability studies. Satellite SAR and along-track interferometry (ATI) can provide large area and spatially high-resolved information on parameters like surface current velocity, wind speed as well as wave heights and periods at the same time. Since 2012 we have been carrying out data acquisitions with the TanDEM-X satellite formation for different test sites, including Fehmarn belt, Skagerrak, Gotland, resund, Rügen and Darss Sill, as part of the Remote Sensing and Earth System Dynamics study. This aims at developing new satellite SAR data products, containing information on Earth processes. We use SAR-ATI and a dedicated processing system to extract ocean surface velocities. These measurements include contributions from currents, waves and the Stokes drift, which, for geophysical interpretation, must be discriminated. Therefore, we extract further information from the SAR data, like wind speed and wave parameters. They help in interpreting the velocity measurements as well as they represent relevant data products for themselves. We present results from a cross-data analysis between SAR-ATI based ocean surface velocities and a numerical circulation model of the Baltic Sea (BSIOM) as well as examples of extracted parameters.

Item URL in elib:https://elib.dlr.de/117428/
Document Type:Conference or Workshop Item (Poster)
Title:Comparison of TanDEM-X Surface Velocity Measurements and Hydrodynamic Model Data in the Baltic Sea
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Suchandt, Steffensteffen.suchandt (at) dlr.deUNSPECIFIED
Lehmann, AndreasGEOMAR Helmholtz Centre for Ocean ResearchUNSPECIFIED
Pleskachevsky, AndreyAndrey.Pleskachevsky (at) dlr.deUNSPECIFIED
Date:March 2017
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:TanDEM-X, Baltic Sea, Surface velocity, Hydrodynamic model
Event Title:ESA Baltic from Space Workshop
Event Location:Helsinki, Finnland
Event Type:international Conference
Event Dates:29.-31. Mär. 2017
Organizer:ESA
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Vorhaben Tandem-L Vorstudien (old)
Location: Bremen , Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > SAR Signal Processing
Deposited By: Suchandt, Steffen
Deposited On:19 Dec 2017 17:38
Last Modified:31 Jul 2019 20:14

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