The observations provide information on ocean temperature, sounds in the sea, air temperature, salt and oxygen content in the sea, wind, ocean currents, and on ice drift and ice thickness.
Marine scientists analyze these so-called in-situ measurements to register changes and understand connections between air, ocean, and sea ice. The knowledge is further used to evaluate and develop models. Observations are used to improve the model calculations using data assimilation. This process improves the quality of forecasts.
