Ny-Ålesund. (Photo: Alfred Wegener Institut) Publication Change of the winter mean (December-January-February) relative humidity from Ny-Ålesund radiosondes. (Photo: Alfred-Wegener-Institut) A manuscript [...] Arctic (AWIPEV Research Base in Ny-Ålesund, Spitsbergen) Radiosonde launch in Ny-Ålesund. (Photo: Alfred Wegener Institut) In Ny-Ålesund, radiosonde measurements are operated since 1991, with regular daily [...] Annual cycle of tropospheric temperatures from radiosondes 1993 to 2014 in Ny-Ålesund. (Photo: Alfred Wegener Institut) Ny-Alesund Radiosondes: Reference Upper-Air Data The inhomogeneity in the historical

subsurface reflections along a profile. Ground-penetrating radar survey at Kohnen station (Photo: Alfred-Wegener-Institut)

cryo-Raman spectrometer (Photo: Alfred-Wegener-Institut) The cryo-Raman spectrometer of the Glaciology section is optimised for measurements on ice and other frozen samples. The whole microscope unit is [...] Long-time measurements across several days are also possible. Ice sample during measurement (Photo: Alfred-Wegener-Institut) The high spatial and spectral resolution and the automated mapping features enable

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

produce base data sets for habitat studies. Larsen A, B, and C ice shelves, Weddell Sea (Graphic: Alfred Wegener Institut) Contact Dr. Boris Dorschel Prof. Dr. Wilfried Jokat Cooperation partners Geology, AWI

campaign performed by the Leipzig Institute for Meteorology (LIM), University of Leipzig and the Alfred-Wegener-Institute (AWI) at Kohnen Station , Antarctica (75°00’ S, 00°04’ E, 2892 m a.s.l.) in austral

c-axes measurements with the automated fabric analyser (Graphic: Alfred-Wegener-Institut) Crystal orientations (also called fabrics or lattice orientations ) represent an important subject of microstructure

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

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

measurement region over Fram Strait during ACLOUD. (Photo: Alfred-Wegener-Institut) Polar 6 after touch-down in Longyearbyen, Svalbard. (Photo: Alfred-Wegener-Institut) Contact Dr. Christof Lüpkes [...] aircraft operation illustration the coordination activities at Polarstern and Ny Alesund (Photo: Alfred-Wegener-Institut) ACLOUD and AFLUX are 2 joint aircraft campaigns of different German universities and [...] momentum in and below clouds. ACLOUD employed two research aircraft, Polar 5 & 6, operated by the Alfred Wegener Institute. During about 20 research flights with each aircraft properties of cloud and aerosol