observations from satellite altimeters in Arctic and Antarctica for sea ice modelling , Florent Garnier June 18, 2019 Sea ice model parameterizations and coupling to ocean and [...] thickness data, Chares-Emmanuel Testut Assessing the contribution of ocean and sea ice initialization for seasonal predictionin the Arctic , Madlen Kimmritz Assimilation of sea ice freeboard observations into an ocean and ice analysis and forecast system , Emma Fiedler Verification approaches for sea-ice analysis and forecasts Searching for

is conducted in the inaccessible, ice-covered regions of the Arctic and Antarctic, making research aircraft indispensable. Currently the AWI relies on the research planes Polar 5 and Polar 6. The two [...] research aircraft of the Alfred Wegener Institute flies over the Arctic Ocean during an IceBird sea ice thickness campagne. (Photo: Esther Horvath) AWI researchers use the aircraft to better understand [...] interactions between the Earth’s crust, ice- and snow-covered areas, oceans and the atmosphere. Several times a year, Polar 5 and Polar 6 fly weeks-long expeditions in the Arctic and Antarctic. They carry on

Cruise report Programme Weekly reports Data PS87 | ARK-XXVIII/4 | Arctic Ocean, Central Basin Start: 2014-08-05, Tromsö End: 2014-10-08, Bremerhaven Chief Scientist: R. Stein Cruise report Programme Weekly [...] Cruise report Programme Weekly reports Data PS72 | ARK-XXIII/3 | Arctic Ocean Start: 2008-08-12, Reykjavik End: 2008-10-17, Bremerhaven Chief Scientist: W. Jokat Cruise report Programme Weekly reports

Litter Plastic has reached even the most remote corners of the ocean. The AWI is not only investigating the scale and impacts of the problem; it's also contributing the expertise to political [...] based on blue-green algae … Find out more The pulse of the Arctic The ‘Arctic PASSION’ project provides environmental data from the Arctic for the local population, for science and for local politics Find out more Putting permafrost in the classroom The Arctic’s frozen soils are thawing – with consequences for climate and humans. Together with partner schools in Germany, schoolchildren from

) The interaction of the lower atmosphere with sea ice and ocean is strongly influenced by processes caused by the surface morphology, which is characterized in the Polar ocean regions first of [...] have a large importance for the interaction between atmosphere and ocean. This concerns both hemispheres since cold-air outbreaks occur in the Arctic and Antarctic as well. Typical regions for cold-air [...] observations of atmospheric boundary-layer modification over Arctic leads , Q. J. R. Meteorol. Soc. , 141 , 2839–2856, doi: 10.1002/qj.2568 .

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 [...] restricted to ice free oceanic regions, as the floats needed to surface regularly to be localized and to transmit its data. The Hybrid Antarctic Float Observing [...] 6. Photo of an ice-resiliant Argo float surfacing the Antarctic Ocean in December 2008. (Photo: Alfred-Wegener-Institut)

photoperiod. Some of the key species we work with in the Southern Ocean are krill, specifically Antarctic krill, Euphausia superba and the gelatinous pelagic tunicate Salpa thompsoni . In the Arctic Ocean

). The scientists in 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 [...] predict the effects of future interventions 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 industry. It enhances the visibility of Germany's engagement in the Arctic on a national and international

(2020) Challenges to monitor biogeochemistry from space in the Arctic Ocean and next steps towards its comprehensive monitoring. European Polar Science Week 2020. Virtual Internagtional Conference. 30 [...] Community Structure from Ocean Colour: Methods, Validation, Intercomparisons and Applications”, International Ocean Color Science (IOCS) Meeting, Darmstadt, 8 May [...] , P. P., Heim, B., Bracher, A. (2008). The Eroding Coast, MORSE Arctic Coastal Initiative of the Canadian and European Space Agencies (CSA, ESA), Institute of Ocean Technology, St. John’s, Newfoundland

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 circulation and [...] projected changes in the global circulation on the climate of the Arctic and Antarctic. Polar climates in a global context remains poorly understood and thus climate change projections in Polar regions [...] in the atmosphere, sea ice and ocean, and involved interactions that play a major role in the coupled Arctic climate system and associated Arctic Amplification. AWI