nearshore food-web through the release of sediment and organic matter to the ocean. Survey-like studies on coastal erosion in the Arctic exist, but a comprehensive understanding of local processes is lacking [...] Coastal Permafrost Profile About 34% of the world's coasts are affected by Arctic permafrost and are particularly sensitive to climate change. The frozen bluffs lose the cohesion provided by the permafrost [...] seawater and are instantly washed away by incoming waves. In the course of the expected warming in the Arctic, which is estimated to be about two to four times as high as the global average, favourable conditions

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.,

The polar regions are a key driving force for the Earth's climate and oceans. With the Alfred Wegener Institute's research in the Arctic and Antarctic, we contribute to the understanding of the global climate [...] relating to the Arctic and Antarctic and is designated by the European Union as a central element of its joint polar research strategy. Another important EU project is ARICE, the Arctic Research Icebreaker [...] Icebreaker Consortium. Within its framework, international coordination of ship-based research in the Arctic is being expanded. ARICE will also give scientists from different countries access to a number of

of an Arctic Sea Ice–Ocean Model by a Genetic Algorithm, doi.org/10.1175/MWR-D-18-0360.1 Sumata, H., Kauker, F., Karcher, M. und Gerdes, R., 2019b: Covariance of Optimal Parameters of an Arctic Sea Ice–Ocean [...] the Arctic summer minimum sea ice extent in September from the beginning of the melting season in May/June on. While the strongest greenhouse gas induced changes are currently observed in the Arctic, it [...] However, this approach neglects all feedbacks of the sea ice-ocean system on the atmosphere. Since 2015 the initial state of the sea ice-ocean model is constrained by sea ice observations (data assimilation)

Developing a Novel Methodology to investigate Diatom Silicification in the Eurasian Basin of the Arctic Ocean using Imaging Flow Cytometry and PDMPO natasha.bryan @ awi.de ORCiD Alfred Wegener Institut Am [...] E-1015 Overview of Doctoral project Phytoplankton communities living inside and below sea ice in the Arctic and the Antarctic arefacing rapid changes due to ongoing climate change. Light and nutrient availability [...] polar phytoplankton composite images obtained with the multispectral Imaging Flow Cytometer? How do Arctic phytoplankton communities differ from Antarctic communities in terms of their species composition

Double-Trouble Resilience and vulnerability of the central Arctic Ocean food web to cumulative stress by warming and anthropogenic pollution. Head of Group Dr. Doreen Kohlbach Further members of the Junior [...] for polar marine food webs. Previous research suggests that pelagic food webs in the Central Arctic Ocean (CAO) are highly dependent on ice-associated food sources (Fig. 1), but how prevailing trophic [...] waters, riverine input and marine traffic will bring more anthropogenic pollutants, even to remote Arctic regions, where they are entrained in water and sea ice, and transferred along the marine food chain

specially adapted biotic community. Ice-covered seascape in the Arctic Ocean (Photo: Esther Horvath) The deep sea in the polar regions In the Arctic, living at the bottom of the sea poses unique challenges for [...] standards. For another, food is harder to come by. The central Arctic Ocean is largely covered with ice and – unlike the Antarctic’s Southern Ocean – surrounded by landmasses. Exchanges with the Atlantic and [...] than we do about the ocean depths. Yet the deep sea is not a habitat fully separated from the surface; it is already undergoing dramatic changes in response to warmer water, ocean acidification and en

insights into key local-regional scale physical and chemical processes for atmosphere-ocean-ice interactions in the Arctic and Antarctic, their responses to, and influence on, projected changes in the global [...] Rinke . WP4. Arctic processes and O-A-I interactions in the coupled climate system Improved understanding of those key physical and chemical processes in the atmosphere, sea ice and ocean, and involved [...] involved interactions that play a major role in the coupled Arctic climate system and associated Arctic Amplification. AWI contribution led by Dr. Annette Rinke and Dr. Wolfgang Dorn . WP5. Antarctic processes

space in the Arctic Ocean and next steps towards its comprehensive monitoring. European Polar Science Week 2020. Virtual Internagtional Conference. 30 Oct 2020 2019 Bracher A. (2019) The Ocean as Seen by [...] 2023 Bracher A: (2023) Hijacking other thematic satellite sensors for ocean colour application" Keynote at 2023 International Ocean Colour Science Meeting, St. Petersburg, FL, USA, 15 November 2023 . Xi [...] (2015) Hyperspectral ocean color imagery and applications to studies of phytoplankton ecology. In Breakout session "Hyperspectral science and applications for shelf and open ocean processes" of IOCS 2015

backbone of the Global Ocean Observing System (GOOS) is the Argo system, which uses an array of >3000 profiling floats (Figure 2). Until recently, Argo was restricted to ice free oceanic regions, as the floats [...] Technology and Logistics Observations of the ocean’s temperature and salinity at different locations and depths – key parameters to assess its state - depended until recently on ship-based expeditions [...] and deep-sea moorings, limiting our ability to monitor oceanic change at adequate resolution and over necessary periods in time and space. However, with the turn of the century, automated systems gained