floats while drifting in open waters (wiggled segments) and under ice (linear segments). (Graphic: Alfred-Wegener-Institut) Along their tracks they collect profiles of temperature and salinity between 2000m [...] trajectory of a single float. Note the near-surface warming event in austral summer 2016/17 (Graphic: Alfred-Wegener-Institut) Mapping the temperature and salinity profiles of many floats to specific surfaces (e [...] entire time period from objective mapping of float data. (From Reeve et al., 2016) (Graphic: Alfred-Wegener-Institut) More advanced analysis techniques even allow quantities estimates the transports associated

shipping channels and berths fill up with sediment. Thanks to seasonal forecasts prepared by the Alfred Wegener Institute, the Hamburg Port Authority can now prepare for such developments well in advance –

Together with partner schools in Germany, schoolchildren from Aklavik, Canada are helping the Alfred Wegener Institute gather valuable data on permafrost. By doing so, they’re improving the joint understanding

illustration of permafrost thaw and climate change during the Long Night of Sciences (Photo: Alfred-Wegener-Institut) Currently we see glaciers melting and observe how sea ice is decreasing. But what happens

1 Beitrittserklärung Hiermit erkläre ich meinen Beitritt zum Verein Freunde und Förderer des Alfred-Wegener-Instituts Helmholtz-Zentrum für Polar- und Meeresforschung e.V. _________ __________________ [...] Beitrittsjahr direkt nach Ihrem Beitritt) auf folgendes Konto: Kontoinhaber: Freunde und Förderer des Alfred-Wegener-Instituts Helmholtz-Zentrum für Polar- und Meeresforschung e.V. (kurz: AWI-Förderverein) Kontonummer: [...] 27570 Bremerhaven Declaration of accession I herewith join the society „Freunde und Förderer des Alfred-Wegener-Instituts Helmholtz- Zentrum für Polar- und Meeresforschung e.V.“ (Friends of the AWI) as a member

(blue and red line, respectively) (Graphic: Alfred-Wegener-Institut) Climate Change Annual mean temperature in Ny-Alesund 1994 to 2024 (Graphic: Alfred-Wegener-Institut) Since the beginning of our meteorological [...] in the Arctic (AWIPEV Research Base in Ny-Ålesund, Spitsbergen) Ny-Ålesund from above. (Photo: Alfred Wegener Institut) Ny-Ålesund is located on a fjord at the west coast of Svalbard (Spitsbergen). In this

Air Soundings Radiation Ozone Lidar Ny-Alesund Radiation Measurements and Observatory (Photo: Alfred-Wegener-Institut) At the AWIPEV Atmosphere Observatory in Ny-Alesund, atmospheric key parameters for

measurements at the Antarctic Neumayer station . Ny-Ålesund AWI meteorological tower (Photo: Alfred Wegener Institut) more current data Complementary Measurements Long-term meteorology Radiation Upper

the Arctic (AWIPEV Research Base in Ny-Ålesund, Spitsbergen) Pyranometer in Ny-Ålesund. (Photo: Alfred-Wegener-Institut) Ny-Ålesund is situated 78.9° N north of the arctic circle. During the polar night from [...] Annual cycle of surface radiation, mean values from radiation measurements 1992 to 2024 (Graphic: Alfred-Wegener-Institut) Climate Change and Radiation The shortwave solar radiation and its reflection at the [...] from daily mean values of reflective and downward shortwave radiation in Ny-Ålesund. (Graphic: Alfred-Wegener-Institut) Publication The surface radiation measurements and related climate aspects are discussed

Helgoland The Biologische Anstalt Helgoland was founded in 1892. Since 1998 it has been part of the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research. Researchers at the BAH investigate