By Anne-Sophie Fortin August 24-26, 2022 If the marine life would have weather forecasts, they would have eddies maps. Eddies are circular currents of tens to hundreds of kilometers in diameter and a lifetime of about a month. They can be seen on satellite imagery as minimums and maximums of sea surface heights and sea […]
By Anne-Sophie Fortin Over the past 20 years, Argo floats have caused a small revolution in the field of observational oceanography as they provide near real-time measurements of the ocean subsurface, which have greatly improved our weather forecast and ocean analysis. Currently, there are ~4,000 floats sampling the oceans year-round. These floats are autonomous underwater […]
Warum sind die Themen Gleichstellung und Vielfalt am GEOMAR wichtig? Und was haben sie auf einem „Tag der offenen Tür“ zu suchen? Diese und viele andere Fragen konnten wir an unserem Stand im Foyer beantworten. Fast ein Viertel aller Mitarbeitenden am GEOMAR kommt aus einem Land außerhalb von Deutschland. Die internationalen Kooperationen und die interkulturelle […]
Koordinaten: 58.615285, -49.724121
By Anne-Sophie Fortin After one week of measurements, the glider was successfully recovered today. As it is a somewhat delicate instrument, some of us took a zodiac to bring it back to the ship. The member of the expedition had to wear a survival suit in case someone would have fallen into the cold water […]
By Anne-Sophie Fortin Today we deployed a highly sensitive bottom pressure instrument from the Scottish Association of Marine Science (SAMS) that will takes measurements for the next 10 years. This instrument is one of a set of two designed to measure the sea surface height across the North Atlantic. The difference in sea surface heights […]
By Anne-Sophie Fortin Lately, our work is mostly about the maintenance of the moored instruments of the 53oN array that are near the Labrador Shelf. The maintenance of the 53oN array consists of recovering and cleaning the moorings, refurbishing or replacing the instruments and calibrate them, and finally, deploying the mooring at the same location. […]
By Anne-Sophie Fortin After mooring recovery, maintenance, and calibration it is now time for mooring deployment. The moored instruments are fixed in intervals on a very long cable as we want to measure water mass fluxes from the surface to the ocean floor. Thus, to deploy a mooring, we need to steam slowly as we […]
By Anne-Sophie Fortin As we move along the 53oN Array, we are performing “CTD casts” which consist of lowering a CTD-Rosette to the ocean floor and pulling it back up on deck. A CTD is an instrument that precisely measures the Conductivity and Temperature at every Depth. We can then compute the salinity from the […]
By Anne-Sophie Fortin Nature showed its artistic talents today. After a few days in the fog, we finally had a clear sky. As the sunset painted the sky and the water in warm colours, a red half-moon rose slowly at the horizon. Gradually, the milky way illuminated the sky along with some shooting stars. All […]