Description: Das Projekt "Sea Surface Topography and Mass Transport of the Antarctic Circumpolar Current (GEOTOP)" wird vom Umweltbundesamt gefördert und von Technische Universität München, Institut für Astronomische und Physikalische Geodäsie durchgeführt. GeoTop3 is the third phase of a DFG project and belongs to the DFG priority progamme 1257 Mass Transport and Mass Distribution in the Earth System . It aims at the determination of the absolute, but temporally changing ocean circulation flow field and of associated mass and heat transports. It is based on a state-ofthe-art circulation model assimilating geodetic data of the dynamic ocean topography (DOT) and oceanographic in-situ data. The ocean model is focused on the Atlantic sector of the Antarctic Circumpolar Current (ACC) and the Weddell Sea. This is one of the most dynamic ocean areas and one of the most critical regions for global climate, due to the impact of circumpolar bottom water production on global deep sea circulation. The regional model is embedded into a coarser global model to avoid systematic distortions. The expected results of this project extension are: 1. A stationary DOT with highest achievable spatial resolution from GRACE and in particular GOCE geoid models and multi-mission altimeter data with error propagation for both, geoid and sea surface. 2. The geoid models will be combined with regional Antarctic gravity data for higher resolution. ICESat data will be used to deal with seasonal sea ice concentrations. 3. A time-variable DOT, sufficiently smoothed to reduce the signal-to-noise ratio and to match the spectral and spatial resolution characteristics of the numerical model. 4. A calculation of the sensitivity of major ocean features such as strength of the Weddell Gyre on the accuracy and resolution of the geoid (and dynamical height) determination in view of the high resolution GOCE geoid model and improved geoid estimates in Weddell Sea area. 5. Model runs, in particular for the mass and heat transport in the Antarctic Circumpolar Current and the Weddell Gyre, the mean oceanographic DOT and its variability as well as their interpretation and quality assessment.
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: München ? Skigebiet ? In-situ-Daten ? Bodenwasser ? Tiefsee ? Topographie ? Antarktis ? Antarktische Zirkumpolarströmung ? Weddellwirbel ? Ozeanzirkulation ? Geodaten ? Meereis ? Stand der Technik ? Globalmodell ? Meeresoberfläche ? Meeresströmung ? Regionalmodell ? Strömungsfeld ? Zirkulationsmodell ? Meeresgewässer ? Stofftransportmodell ? Datenmodell ? Geotop ? Bewertung ? Daten ? Fortpflanzung ? Globales Klima ? Geodäsie ? Klima ? Gebiet ? Globale Aspekte ? Atlantischer Ozean ? Berechnung ? Erdsystem ? FEHLER ? JAHRESZEITLICH ? ERGEBNIS ? Konzentrat ? REGIONAL ? SICHT ? STATIONAER ? Fluss [Bewegung] ?
Region: Bayern
Bounding box: 12.53381° .. 12.53381° x 47.795° .. 47.795°
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 2009-01-01 - 2012-06-30
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