proxies TEXH86 and UK’37 Long-term winter warming trend in the Siberian Arctic during the mid- to late Holocene Back from Antarctica Ocean surface temperature variability: Large model–data differences at decadal [...] profiles Flat Meridional Temperature Gradient in the Early Eocene in the Subsurface Rather than Surface Ocean Layering of surface snow and firn at Kohnen Station, Antarctica - noise or seasonal signal? Assessing

Grant Changes of water isotopes in Arctic Sea ice, Ocean, and atMosphere (CiASOM) (2021-2024) The main goal of the Changes of water isotopes in Arctic Sea ice, Ocean, and atMosphere (CiASOM) project is [...] this end, caves and permafrost exposure will be studied in East Siberia along a transect from the Arctic Ocean to the Lake Baikal. The objectives of the project are to: (i) Reconstruct (a) mean interglacial [...] to provide a comprehensive description of the present-day Arctic water cycle and related key exchange processes between the atmosphere, ocean, and sea ice, using both instrumental data and climate simulations

Maps of the Arctic and Antarctic with underwater sound recording sites occupied by the AWI Ocean Acoustics group since 2006. PALAOA (PerenniAL Acoustic Observatory in the Antarctic Ocean) Between 2006 [...] in the Antarctic Ocean, or “whale” in Hawaiian. attached, since 2008, to deep-sea mooring of the oceanographic Hybrid Antarctic Float Observatory (HAFOS) and the Frontiers in Arctic Marine Science (FRAM) [...] seals, fish and invertebrates between Spitsbergen and Greenland. Further moorings in the adjacent Arctic Ocean extend this array slightly to the North. MAP of FRAM moorings hosting PAM recorders an AZFPs.

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

samples. Our focus study areas are Arctic terrestrial systems (Russia, Alaska, Canada) and coastal–marine polar ecosystems (North Pacific & Atlantic, Southern Oceans). We apply metabarcoding (target-specific

sea levels are the two most important cornerstones. We conduct marine geological research in the Arctic and Antarctic to more precisely define the inadequately known advance and retreat behavior of the [...] contributes to better reconstructing the history of global ice sheets and evaluating their influence on ocean circulation and sea level variations. As a result, models for future ice sheet behavior are then to

been measuring the Arctic Ocean sea ice for 30 years, the time series is the only aircraft- and helicopter-based measurement series in the world that has been carried out in the Arctic over such a long period [...] the food supply from the ice and ocean to the deep sea has changed. The first lander has already been deployed and the second will be launched later today. First Ocean Floor Observation 09. August 2023 [...] first Ocean Floor Observation and Bathymetry dive at our first ice station. During almost 6 hours on the seafloor we made a host of interesting observations with our instrument called OFOBS (Ocean Floor

on board is excited and ready to start the expedition in the Arctic Ocean. For two months, around fifty scientists will explore the Arctic in transition, as the sea ice extent reaches its annual minimum [...] biodiversity of the Arctic ecosystem from the sea ice to the seafloor. © Esther Horvath On the way to the ice 04. August 2023 This morning, we had nothing on the horizon but the endless ocean and blue sky, now [...] and physics of sea ice. We also want to investigate the effects of sea ice retreat on the entire ocean system – from the surface to the deep sea. © Esther Horvath

work on our current expedition ArcWatch-1 and talked about the complexity and importance of the Arctic Ocean ecosystem and ongoing changes due to climate warming. © Esther Horvath Second Ice Station 16. [...] photos and videos will be taken and underwater maps will be produced with our instrument called OFOBS (Ocean Floor Observation and Bathymetry System). Chief scientist Antje Boetius (left) and Autun Purser of

m at Gakkel Ridge of the Central Arctic. Such integrated studies of ultraslow oceanic spreading zones are rare, because the most extensive of these systems, the Arctic Gakkel Ridge and the Southwest Indian