A lf re d- W eg en er -I ns ti tu t Volker Rachold is head of the German Arctic Office at the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI), which, since 2017, has served

Survey, British Antarctic Survey, British Antarctic Survey, Alfred-Wegener-Institut, Alfred-Wegener-Institut, Alfred-Wegener-Institut, Alfred-Wegener-Institut (2014) Atmospheric Boundary Layer Over Coastal [...] Rothera Airstrip (Photo: Alfred-Wegener-Institut) Polar 5 at Rothera. (Photo: Alfred-Wegener-Institut) Twin-Otter (BAS) viewed from Polar 5 near Rothera. (Photo: Alfred-Wegener-Institut) View from Polar [...] Polar 5. (Photo: Alfred-Wegener-Institut) Nygard, T. , Vihma, T. , Birnbaum, G. , Hartmann, J. , Lachlan-Cope, T. , Ladkin, R. , Lüpkes, C. and Weiss, A. (2016) Validation of eight atmospheric reanalyses in

Partners HB-Cluster: • Alfred Wegener Institute for Polar and Marine Research • University of Bremen, Department of Geosciences • MARUM, Center for Marine Environmental Sciences, Bremen • Konrad-Zuse-Zentrum

microbiologist Dr. Uwe John explains work processes to students in the lab. (Photo: Sina Löschke) The Alfred Wegener Institute (AWI) promotes students already at the start of their academic career. Through close

Permafrost carbon Sampling a Yedoma cliff, Sobo Sise island, Lena Delta (Photo: Alfred Wegener Institut) Arctic landscapes, especially those underlain by permafrost, are threatened by climate warming and [...] of organic matter into the soil column. Scheme of the permafrost carbon feedback loop (Photo: Alfred Wegener Institut) Today, we know that syngenetic freezing of organic matter over a period of thousands

used for sensitive and specific detection of paralytic shellfish poisoning (PSP) toxins. (Photo: Alfred-Wegener-Institut) Bioassay-guided fractionation to chemically characterise secondary metabolites Analytical [...] tandem mass spectrometry) for the detection of organic trace compounds in marine samples. (Photo: Alfred-Wegener-Institut) LC-MS/MS chromatogram of a planktonic field samples from the North Sea containing several

the Arctic Coastal Plain near Barrow (Alaska) (Photo: Alfred-Wegener-Institut) Fig.2: Northern part of the Mackenzie Delta (Photo: Alfred-Wegener-Institut) Fig.3: Flight pattern of Polar5 for measurements [...] (Graphic: Alfred-Wegener-Institut) Fig.4: Vertical profiles of temperature (red) and methane concentration (blue) in the atmospheric boundary layer over Arctic permafrost wetland. (Graphic: Alfred-Wegener-Institut) [...] from Arctic Wetlands (AirMeth) Fig.6: Polar5 flying at low lever over Arctic permafrost. (Photo: Alfred-Wegener-Institut) The atmospheric concentration of methane, a potent greenhouse gas, has a significant

tr-175"> Z 2288 Polarforschung . / hrsg. vom Alfred-Wegener-Institut für Polar- und Meeresforschung / und der Deutschen Gesellschaft für Polarforschung. [...] für Kultur und Medien / hrsg. vom Bundesministerium des Innern . [ Benutzer: <awi1> Passwort: <wegener1> ] Print Ausgabe: 59.2008,52 - GvN Geo. / Gruner & Jahr jeweils letztes Heft Z 1268 Geo-marine letters

Hollands / AWI, 2014) (Photo: Alfred Wegener Institut) Polar Meteorology Earth Observing Systems Remote sensing of the Cryosphere (© ESA / USGS / NASA / NSIDC) (Photo: Alfred Wegener Institut) Remote sensing [...] (© ESA / Envisat, 2006) (Photo: Alfred Wegener Institut) Drift and deformation of sea ice Polynias Terra Nova Bay Polynia (© NSIDC / Modis, 2013) (Photo: Alfred Wegener Institut) Observation of coastal [...] Landsat-8, 2012) (Photo: Alfred Wegener Institut) Mass loss of the antarctic ice shield Snow Accumulation Inland ice in Antarctica (© ESA / Envisat, 2008) (Photo: Alfred Wegener Institut) Retrieval of snow

Hollands / AWI, 2014) (Photo: Alfred Wegener Institut) Polar Meteorology Earth Observing Systems Remote sensing of the Cryosphere (© ESA / USGS / NASA / NSIDC) (Photo: Alfred Wegener Institut) Remote sensing [...] delta (© NASA / Landsat , 2000) (Photo: Alfred Wegener Institut) Charting the Arctic Tundra Polynias Terra Nova Bay Polynia (© NSIDC / Modis, 2013) (Photo: Alfred Wegener Institut) Observation of coastal polynias [...] Landsat-8, 2012) (Photo: Alfred Wegener Institut) Mass loss of the antarctic ice shield Snow Accumulation Inland ice in Antarctica (© ESA / Envisat, 2008) (Photo: Alfred Wegener Institut) Retrieval of snow