Detailseite
Projekt
Analyse der Größenordnung, Antriebe und Mechanismen von Salzgehaltsvariabilität im tropischen Atlantik
Antragsteller
Professor Dr. Peter Brandt
Fachliche Zuordnung
Physik, Chemie und Biologie des Meeres
Förderung
Förderung von 2013 bis 2018
Projektkennung
Deutsche Forschungsgemeinschaft (DFG) - Projektnummer 198122929
Variability of air/sea heat fluxes and associated sea surface and mixed layer temperature anomalies have a strong influence on the oceanic and atmospheric circulation and its variability. Salinity plays a specific role for the evolution of the mixed layer heat content due to its impact on ocean stratification. In contrast to temperature anomalies, salinity anomalies do not provoke a local air/sea exchange response in the form of a freshwater flux and salinity anomalies are much more persistent than temperature anomalies. Workpackage 1.3, as part of the Forschergruppe 1740, proposes the analysis of spatial and temporal scales and magnitude of salinity anomalies in the tropical Atlantic Ocean. Recent observational data on ocean interior transport and hydrography with high temporal (moored observations) and spatial (autonomous gliders, ship data, Argo float) resolution, and in combination with non-oceanic freshwater fluxes (evaporation, precipitation, and river run-off) will be used to improve our understanding of 1) freshwater flux variability in the Atlantic sector in general and 2) the role of freshwater flux variability during the onset of the equatorial cold tongue, a dominant feature of the tropical Atlantic climate variability.
DFG-Verfahren
Forschungsgruppen
Mitverantwortlich
Dr. Johannes Karstensen
Kooperationspartner
Dr. Marcus Dengler; Dr. Gerd Krahmann
