Plattform Platform	Reise-Nr. Cruise-No.	Zeitraum Period	Projekt Project	Arbeitsgebiet Working area
Elisabeth Mann Borgese	EMB276	18.09.2021 - 29.09.2021		Baltic Sea Gotland Basin

Fahrtleiter Chief Scientist	Institut Institute	Auslaufhafen Port of departure	Einlaufhafen Port of return	Stationskarte Station map	Schiffsroute Trackchart
Voss Maren	Leibniz-Institut fur Ostseeforschung, Warnemunde	Rostock	Rostock

Ziel der Reise / Objectives of Cruise:

The overall goal of the research cruise is to define the distribution and underlying redox cycling pathways that govern the speciation of Mn, and to identify the subsequent coupling of Mn with the cycling of oxygen, iodine, and nitrogen. We want to interrogate the cycling of Mn within the Baltic Sea and predict that reactive Mn, as Mn(III)-L and Mn oxide particles, is a primary control on the redox landscape of Mn-rich stratified waters, particularly at redox boundaries and within the suboxic zone. Recent methodological and technological advances now allow for unprecedented potential in characterizing the composition of Mn within solution and particles via high sensitivity spectrophotometric methods and synchrotron-based spectroscopy, respectively. By means of CTD and pumpCTD data a high resolution profile of sensor and nutrient data will be collected. Combining these advances with new sensors for measuring ROS in situ and natural abundance and tracer-level isotopic analyses will provide new windows into the coupling of Mn with other elemental cycles like nitrogen, sulfur and trace metals.

Messungen / Measurements