of our planet was not only dictated by the coming and going of oceans and mountains, or the wandering of continents; it was also constantly shaped by natural climate change. From the past we can learn [...] with tundra, like what we now see in eastern Siberia. Today’s Arctic, with ice-covered Greenland, Siberian permafrost and sea ice at the North Pole, is a holdover of that glacial world. But for how [...] Diekmann Find out more > Dialogue & Lectures Lectures | 15.07.2018 Arctic Environments in Change Ecologic Arctic Summer College Policy advice

fast things changed, what forces drove them, how ice sheets and oceans responded – we would gain something invaluable: a longer perspective on what is possible. But how do we read a past that left no [...] – a measure of ocean acidity that is closely linked to atmospheric CO₂ levels. These are just two of the signals we work with, each opening a different [...] water masses from the Atlantic are pushing further north into the Arctic Ocean through the Fram Strait. This is a recent and ongoing phenomenon, and understanding its pace and extent requires archives with

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

, V., Wekerle, C., Wolf-Gladrow, D., Völker, C. (2018): Arctic Ocean biogeochemistry in the high resolution FESOM 1.4-REcoM2 model, Progress in Oceanography, 168, 65-81,doi:10.1016/j.pocean [...] biogeochemical model REcoM2 coupled to the Finite Element Sea Ice-Ocean Model (FESOM 1.3), Geoscientific Model Development, 7 (6), 2769-2802. doi:10.5194/gmd-7-2769-2014 Hauck, J., Völker, C., Wang, T., [...] (2013). Seasonally different carbon flux changes in the Southern Ocean in response to the southern annular mode, Global Biogeochemical Cycles, 27 (4), 1236-1245. doi:10.1002/2013GB004600 Schartau, M.,

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

AWI-LMU joint research group for Southern Ocean-Climate Interactions (SO-CLIM) Earth System Models (ESM) do not yet depict observed climatic changes in the Southern Ocean adequately [...] from the vast exchange of water between the deep ocean and the sea surface that is unprecedented in the global ocean elsewhere. Over past decades, the Southern Ocean has substantially [...] help shape and coordinate many projects in the Arctic and Antarctic. Personal website Email Dr. Léa Olivier Postdoc My aim is to better understand the ocean carbon sink and its changes

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 .