-Project are: to assess the influence of sea-ice and ocean dynamics in the Laptev Sea on the transpolar drift; to investigate changes in the arctic halocline, water mass formation, and transport mechanisms [...] the atmosphere - sea-ice - ocean system; to study the history of the transpolar system. Contact: T. Soltwedel, J. Hölemann, R. Stein BIOACID III (Biological Impacts of Ocean ACIDification) Project funded [...] Riebesell, GEOMAR, Germany The overarching questions of BIOACID -Project are: What are the effects of ocean acidification on marine organisms and their habitats? What are the underlying mechanisms of responses

well as ocean observations (sea-surface temperature) to optimize the initial state of the sea ice-ocean system for short-term (up to 6 days) forecasts. ICEDAS was build around the sea ice-ocean model NAOSIM [...] predict the Arctic summer minimum sea-ice extent in September from the beginning of the melting season in May/June on. AWI is participating in the SIO since 2008 by using a coupled sea-ice ocean model (NAOSIM) [...] However, this approach neglects all feedback of the sea ice-ocean system onto the atmosphere. This year (2015) the initial state of the sea ice-ocean model has been constrained by sea-ice observations in a

better understand and quantify the role of clouds in the lower Arctic atmosphere. A special focus is on the amplified climate change in the Arctic. To that aim measurements during ACLOUD and AFLUX were/are [...] Airborne Observations In, Below and Above Arctic Clouds Map of the areas for aircraft operation illustration the coordination activities at Polarstern and Ny Alesund (Photo: Alfred-Wegener-Institut) ACLOUD [...] research institutes (listed below) embedded in the Transregional Collaborative Research Centre TR 172: ArctiC Amplification: Climate Relevant Atmospheric and SurfaCe Processes, and Feedback Mechanisms (AC)³

shifted location • Arctic Ocean: • Increased coastline erosion – e.g. village relocation • Cultural change – subsistence lifestyle facing problems Changes in the ocean impact people Arctic Ocean and extreme [...] weather Impacts on people J. Francis What’s happening in the Arctic Ocean? • Warmer air reduces air column density, shifting wind fields Arctic Ocean and extreme mid-latitude weather Impacts on people J. Francis [...] PowerPoint Presentation Ocean and climate change Dr. Rebecca Rolph Alfred Wegener Institute for Polar and Marine Research Potsdam, Germany • How the ocean regulates climate • Changes in the ocean • What these changes

North. Arctic Council https://arctic-council.org/en/ The Arctic Council is the leading intergovernmental forum promoting cooperation, coordination and interaction among the Arctic States, Arctic Indigenous [...] the Arctic play in the Earth system? What characterizes the Arctic environment? What changed in the Arctic over the last decades? What is permafrost? How does thawing permafrost affect the Arctic environment [...] permafrost connects to the Arctic climate explain how the Arctic residents and economy depend on the Arctic environment the relationship between the Arctic environment and especially permafrost assess the

slides, and how lakes form on and beneath the ice sheets. She also participates in expeditions to the Arctic and Antarctic. For her research she uses the AWI’s two polar research planes, the data from which [...] mechanical properties, which have to be included in models, but above all because its direct ties to the ocean and the atmosphere result in a multitude of interactions. Professor Angelika Humbert T: +49 (471)

Changes in the circulation freshwater between Arctic Ocean and subpolar North Atlantic In RACE we study the variability of the freshwater storage in the Arctic Ocean and the subpolar North Atlantic. We use [...] observations and model simulations of the ocean and the sea ice to understand the underlying processes. Here you find the project website . Contact: Dr. Benjamin Rabe (Phys. Oceanography) Prof. Dr. Rüdiger

each day for 1 year) - self contained vehicel (internal data storage to avoid problems with ice in arctic regions) - measure C,T and p with precision high enough to indicate convective events in polar regions [...] is placed onto the vehicle at the time a cast shall start, and it is removed when it reaches the ocean bottom. The vehicle itself is balanced to posess some buoyancy and to swim up by itself, finally reaching

Underway spectrophotometry in the Fram Strait (European Arctic Ocean): a highly resolved chlorophyll a data source for complementing satellite ocean color. Optics Express Other references: 1. T.F. Stocker [...] “Amplified Arctic warming by phytoplankton under greenhouse warming,” Proc. Natl. Acad. Sci. 112 (19), 5921-5926 (2015). 3. K.R. Arrigo and G.L. van Dijken, “Continued increases in Arctic Ocean primary [...] atmospheric and oceanic DMS levels to particle nucleation events in the Canadian Arctic,” J. Geophys. Res. Atmos. 116 (D17), D00S03 (2011). 7. P. Tunved, J. Ström, and R. Krejci, “Arctic aerosol life cycle:

matter within the rivers and oceans would allow to better assess the export, transformation and fate of tDOM (the largest fraction of dissolved carbon in the Arctic) in the ocean. Colored or chromophoric dissolved [...] supplied by Arctic rivers, which account for more than 10% of the total riverine and terrestrial organic carbon into the global ocean waters (Opshal et al., 1999; Benner et al., 2004). Most of the Arctic outflow [...] outflow and, as a consequence, the total carbon mobilized into the Arctic Ocean, leave the Arctic basin via the Fram Srait, following the East Greenland Current (EGC) and through the Davis Strait within the