N. and Dommergue, A. (2018): Atmospheric Transport Pathways to Antarctica and the Remote Southern Ocean using Radon-222, Frontiers in Earth Science, 6. doi: 10.3389/feart.2018.00190 Weller, R., Legrand [...] Schrems, O. (1998): Tropospheric ozone depletion in polar regions - A comparison of observations in the Arctic and Antarctic, Tellus, Vol. 50B, pp. 34-50, www.tandfonline.com/doi/abs/10.3402/tellusb.v50i1

and O. Schrems, Tropospheric ozone depletion in polar regions: A comparison of observations in the Arctic and Antarctic. Tellus, 50B, 34-50, 1998. Frieß, U., J. Hollwedel, G. König-Langlo, T. Wagner, and [...] half-life time of 3.82 days. The main source is emission of 222 Rn from terrestrial soil, while the oceanic source strength (with two order of magnitude lower emission rates) can usually considered as negligible [...] However, in case of Neumayer continental sources are far away and our measurements indicate that oceanic emissions significantly contribute to the measured signal and especially to the seasonal maximum

Potsdam carry out expeditions to the Arctic and Antarctic. They are mainly devoted to Arctic research - in particular in the permanently frozen areas of Siberia and the Arctic island group Spitzbergen - and [...] in the system. German Arctic Office Since 2017, the German Arctic Office at AWI Potsdam serves as an information and cooperation platform for German stakeholders invested in Arctic science, politics and [...] Wegener Institute started its work in 1992. The scientific focus is the investigation of polar land-ocean-atmosphere linkages, complementing the marine and coastal research fields at the AWI sites in Bremerhaven

Boetius, A. (2013) FRAM - FRontiers in Arctic marine Monitoring: Permanent Observations in a Gateway to the Arctic Ocean. OCEANS - Bergen, 2013 MTS/IEEE. doi: 10.1109/OCEANS-Bergen.2013.6608008 Soppa, M. , Dinter [...] in a changing Arctic Ocean – Overview of long-term summer measurements in the Fram Strait Variability of chlorophyll a distribution in the Fram Strait, Greenland Sea and Central Arctic Ocean. Polar Research34: [...] Insights into Water Mass Circulation and rigins in the Central Arctic Ocean from in-situ Dissolved Organic Matter Fluorescence. JGR Oceans; JGRC24631: doi 10.1029/2021JC017407 Von Appen W.J., Waite A.,

Figure 3.3: Mean TChla distribution in the Arctic Ocean (mg/m3) during 29 June - 12 August 2022. 35 Figure 3.4: Mean Chl-a PFT distribution in the Arctic Ocean (mg/m3) during 29 June - 12 August 2022. 36 [...] The Arctic Ocean is undergoing rapid and significant changes due to climate warming, impacting its physical and biological systems. Phytoplankton plays different roles in the dynamics of the ocean systems [...] machine learning with extensive marine data from ocean observations and simulation outputs (Figure 1.2), specifically focused on the sub- arctic and arctic regions (above 50◦ latitude), could provide improved

Alvarez E. (2022) Toward the Synergistic Use of Ocean Colour Products to Improve the Description of Phytoplankton Productivity within the Global Ocean. ESA Ocean Carbon from Space Workshop, Online event, 14 [...] (2002-2020). ESA Ocean Carbon from Space Workshop, Online event, 14 – 18 February 2022. Poster.​ Bracher A. (2021) S5P+-I-OC : S5P+ Innovation Ocean Color - presentation (Astrid Bracher, AWI ESA Ocean Science Cluster [...] monitoring of surface phytoplankton functional types in the Atlantic Ocean. Report: 7th edition of the Copernicus Marine Service Ocean State Report (OSR 7). State of the Planet. Oelker J., Losa S. N., Richter

The Arctic experiences some of the most rapid climate changes on the planet, resulting in significant sea-ice melt. This transformation exposed the Arctic Ocean to increasing sunlight, driving a 56% rise [...] nutrients and carbon into the Arctic Ocean, delivered from rivers and coastal erosion. While it might seem logical that these additional nutrients would enhance the ocean’s biological carbon pump, - boosting [...] ecosystem impoverishment are undermining the pump’s efficiency, challenging assumptions about the Arctic’s ability to store carbon in a warming world.

becoming more frequent and intense. The Arctic Ocean also suffers from this development: The absence of sea ice will lead to more extreme fluctuations in ocean temperatures, with abrupt temperature changes [...] Wegener Institute shows how marine heatwaves will also become much more intense and frequent in the Arctic in the 21st century. With drastic consequences for the ecosystem. The researchers published their

Polarstern Core Repository The section Marine Geology curates and archives sediment cores from both polar oceans which were taken by RV Polarstern since 1983. The collection comprises more than 4000 cores from [...] Roberts Project are also maintained by the AWI repository. Lacustrine sediments cored from lakes in the Arctic and Antarctic are archived by the section Polar Terrestrial Environmental Systems at AWI Potsdam

Tallinna Tehnikaülikool (Estonia) Gronlands Naturinstitut (Greenland) Arctic Monitoring and Assessment Programme Secretariat World Ocean Council EU-PolarNet Participants (Photo: Alfred Wegener Institut)