For the past 25 years, the Alfred Wegener Institute has operated a long-term observatory in the Arctic deep sea: the HAUSGARTEN. Located between Greenland and Svalbard, it is where researchers investigate [...] investigate natural and climate-change-related changes in a polar, marine ecosystem – from the ocean’s surface to the seafloor, 5,500 metres below. Many of the observatory’s stations are located below the sea

Research: Oceans, 106(C9), 19939–19956. doi.org/10.1029/1999JC000308 Volk, T., & Hoffert, M. I. (1985). Ocean Carbon Pumps: Analysis of Relative Strengths and Efficiencies in Ocean-Driven Atmospheric [...] plankton and the rest of the oceanic food web is offered by Figure 2 below. Figure 2 | Model of interactions between the different types of plankton and the rest of the oceanic food web. This scheme envisions [...] dioxide that exists between the Earth's atmosphere and the oceans causes diffusion phenomena by which CO2 molecules reach the surface of the oceans and dissolve among the waves. Although interaction with

ice dynamics - Arctic climate and ocean dynamics - Earth system modelling - Terrestrial Arctic ecosystems and permafrost Biosciences: - Marine, coastal and shelf sea systems - Arctic ocean ecology and impacts

Sea-ice algae The seasonal extent and properties of Arctic ice on land and in the ocean determine the efficacy of the albedo feedback mechanism causing arctic climate amplification. Various ice types are inhabited [...] Sampling and analytical strategy to investigate taxonomic and functional ice algae composition in the ocean and lakes. (Photo: Alfred-Wegener-Institut) High-resolution reconstruction of regional climate changes [...] Interdisciplinary research projects at the interface between natural science and data science Topic A: "Arctic Environmental Data Analytics"– Gregor Pfalz Topic B: "Data fusion using remote sensing data and

factors such as warming, nutrient deficiency or ocean acidification, by focusing on one of the most sensitive areas on Earth, the subarctic and Arctic Ocean. Thereby, we contribute to the Helmholtz research [...] greenhouse gas, rising CO 2 causes ocean warming: temperatures of the surface waters have already increased by 1.1°C on average, while some regions like the Arctic Ocean changing fastest (IPCC 2022). The [...] anthropogenic CO 2 is taken up by the ocean, concentrations of CO2 and bicarbonate increase while the concentration of carbonate ions and the pH decrease, also known as 'Ocean Acidification'. Just like warming

y in the Arctic Ocean may transition from being predominantly light-controlled to being more nutrient-controlled. Also, the phenomenon of ocean acidification is most pronounced in the Arctic due to the [...] temporal scales of phyoplankton activity (Graphic: Phytochange) Focus – The Arctic is warming faster than any other oceanic region of the planet and its sea-ice cover is declining faster than models predict [...] e Lüdeling) FRAM - Our Work group is also involved in the context of the Arctic long-term observatory FRAM (Frontiers of Arctic Monitoring) . Based on innovative developments as well as approved technologies

ecology of Arctic coasts Currently, global warming especially causes strong effects on Arctic ecosystems. We study the consequences of increasing water temperatures on species interactions in Arctic benthic [...] Curr Opin Biotechnol 73, 225-232. doi: 10.1016/j.copbio.2021.07.026. Exciting results Arctic burrowing Effects of Arctic lugworms Find out more Marine heatwaves Do you remember? Find out more Team PIs: Dr [...] benthic coastal communities. From these investigations we predict future scenarios for a warmer marine Arctic ecosystem and its species communites. Evolutionary Ecology Species invasions as a tool to study rapid

questions of my research. My particular interest focuses on species interactions in temperate and Arctic regions and on the effects alien marine organisms on native coastal ecosystems. Mathias Wegner Parasites [...] on transgenerational plasticity (parental environment effects on offspring traits) in response to ocean warming. So far, I can say that maternal effects play an important role in populations’ adaptive responses

framforum.com/2023/02/28/sustainable-development-of-the-arctic-ocean/ framforum.com/2023/02/28/sustainable-development-of-the-arctic-ocean/ Operations and Research Platforms IceBird Summer 2024 [...] acquired by the mooring IPS framforum.com/2023/02/28/sustainable- development-of-the-arctic-ocean/. The R/V KPH was servicing the mooring and completing a sea ice station at the time of our flight [...] Project Page) is a series of airborne surveys to collect measurements of sea ice thickness in the Arctic conducted by the Alfred Wegener Institute for Polar and Marine Research (AWI). Airborne surveys provide

ultraslow mid-ocean ridge?, doi: 10.1002/grl.50329 Schlindwein et al., 2014: Seismicity of the Arctic Mid-Ocean Ridge system, doi: 10.1016/j.polar.2014.10.001 Schlindwein and Schmid, 2016: Mid-ocean-ridge seismicity [...] Corela et al., 2023: The effect of deep ocean currents on ocean- bottom seismometers records, doi: 10.5194/nhess-23-1433-2023 Czuba et al., 2011: Continent-ocean-transition across a trans-tensional margin [...] , 2016: Thickness of the oceanic crust, the lithosphere, and the mantle transition zone in the vicinity of the Tristan da Cunha hot spot estimated from ocean-bottom and ocean-island seismometer receiver