Most remote sensing sensors are not capable to measure directly any parameter of, e.g., the ocean interior. However, knowledge about conditions in the ocean interior and about interaction processes between ocean and atmosphere and in the ocean is of substantial importance for understanding the Earth climate system. The perfect tool to gain maximum knowledge about such processes is the usage of numerical models in combination with assimilation of remote sensing and in situ data.
Used is the GECCO environment to perform long (up to 60+ years) global and regional assimilation runs, including the Atlantic and Arctic ocean-atmosphere systems. The assimilation infrastructure is also being used to investigate ocean and sea ice sensitivities to specific forcing factors.
Ocean syntheses are needed to perform decadal climate predictions with coupled climate models for the initialization of the ocean components. The results of the GECCO2 ocean syntheses can be obtained from the 'Integrated Climate Data Center' (ICDC) for the period from 1948 until present.