WATER-MASS TRANSFORMATION IN SALINITY-TEMPERATURE SPACE
A new framework for studying water-mass transformations in salinity-temperature space is presented. It is shown how the flow cross isothermal and isohaline surfaces in the ocean can be quantified from knowledge of the non-advective fluxes of heat and salt. It is also shown how these cross isothermal and isohaline flows can be used to form a continuity equation in salinity-temperature space. The advection cross isothermal and isohaline surfaces is then quantified in a state-of-the-art ocean model. The circulatory patterns found from the model run is similar to those found in earlier work on the thermohaline streamfunction, but with this new framework we can also see how the water-mass transformation is forced by diabatic processes in the ocean interior and at the ocean-atmosphere interface. It is found that strong transformation often occur at or near to the surface. Water-mass formation and destruction due to the surface fluxes are therefore studies also in physical coordinates. Geographical regions of formation and destruction are shown on a map, and linked to the surface freshwater and heat forcing.
Hieronymus, M., Stockholm University, Sweden, firstname.lastname@example.org
Nilsson, J., Stockholm University, Sweden, email@example.com
Nycander, J., Stockholm University, Sweden, firstname.lastname@example.org
Time: 16:00 - 18:00
Location: Poster/Exhibit Hall
Presentation is given by student: Yes