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This was our second and last FLEAT (Flow Encountering Abrupt Topography) cruise and my first time as chief scientist. We successfully recovered five moorings in the vicinity of the island group Palau. In addition, we conducted towed mesurements above the submarine ridge along the island of Yap to observe lee waves generated by the mean flow. The towyos over different parts of the ridge, at different depths, showed strong vertical oscillations of isopycnals and enhanced levels of turbulent dissipation.

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We spent three weeks on R/V Roger Revelle to study flow-topography interactions in the vicinity of Palau in the tropical North Pacific. This was my first time as a co-PI on a research cruise. Together with leading the nightwatch and responsibility for six mooring deployments and one mooring recovery this turned out to be a very busy cruise. It was very rewarding as we did a ton of interesting science though!

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Late August and September 2015 in the Beaufort Sea on R/V Sikuliaq to study how upper ocean turbulent mixing may change under ice-free conditions in a warmer climate. Increased turbulent mixing may bring up warmer Atlantic water from beneath the cold surface layer causing a positive feedback on Arctic sea ice retreat. We deployed a mooring in the central Beaufort Sea and carried out shipboard measurements with SWIMS and MMP.

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In January and March 2015 I went on two research cruises on R/V Roger Revelle to the Tasman Sea. I oversaw technical details, logistics, deployments and recoveries of the 15 TTIDE moorings, some of them full ocean depth down to 4000 m. The TTIDE project aimed at understanding the dissipation and reflection of internal tides impinging on a continental shelf. Working close to the Southern Ocean turned out to be quite challenging, strong winds and high seas for most of the time.

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