Flussi di calore all'interfaccia aria-ghiaccio-mare nella Baia di Terranova (Antartide-XI Spedizione)

In the frame of the Climatic Long-term Interactions for the Mass-balance in Antarctica (CLIMA) project of the Italian National Program in Antarctica (PNRA), an oceanographic campaign in the 1996 austral summer period is carried on. In this paper we used the meteo-marine data collected in the area surrounding Terra Nova Bay as a first step to parametrize the most convenient relations to describe the heat fluxes at the nterfaces air-sea-ice. In particular, heat fluxes between atmosphere and ocean have been computed in this coastal area of the Ross Sea characterized by the presence and the absence of ice cover. In the former condition we computed heat fluxes in the hypotesis of maintaining Constant a uniform ice sheet extension with a light snow layer superimposed. The preliminary results show the total budget strongly influenced by the incoming radiation and by the wind. The solution at the air- ice interface is completely different from the sea - air interface. In the former, we can suppose that the interface lost a -161 W/m2 mean quantity ; in the latter, instead, we had a loss of a - 2 W/m2 mean value: this means that the interface is substantially balanced excluding, of course, the errors influence