snow isn’t just snow. There are clear differences if you compare, e.g., the Arctic and Antarctic. While the snow on the Arctic sea ice is completely melting over the course of the year, and so-called meltwater [...] effectively it insulates, and as such reduces the transfer of heat from the ocean to the atmosphere. However, the less warmth the ocean gives off, the thinner the sea ice remains. Therefore the snow not only [...] 23.09.2019 Scientists Prepare for Year-Long Expedition to Arctic Center Find out more > EOS | 06.09.2019 Light Permeates Seasonally Through Arctic Sea Ice Find out more > Dialogue & Lectures Lecture | 09

2 MB Prof. Dr. Antje Boetius Director of Alfred, jpg | 1 MB Media Arctic Circle (Video) | 15.05.2024 Arctic Circle 2024 – Panel “Arctic Climate” Find out more > Konrad-Adenauer-Stiftung | 04.07.2024 Report [...] Boetius’s research focuses on the impacts of climate change on the Earth’s oceans and polar regions, especially in connection with Arctic amplification, as well as changes in the biological pump and marine microbial [...] Tyler Prize Lecture | 08.04.2023 The changing arctic - Vortrag von Prof. Dr. Antje Boetius (AWI) Senckenberg Dialogue | 23.10.2020 MOSAiC – the largest Arctic expedition of our time Futurium Policy advice

sea ice models used for? Example of a sea ice model (Graphic: Alfred Wegener Institut) The Arctic areas - ocean even more than land - are difficult to reach, for several winter months not at all. Instruments [...] time. Variability is determined e.g. by air and ocean temperature. The velocity in turn depends on the thickness of the ice, the wind conditions and the ocean current. The changes of the sea ice over time [...] This explains the expression "compute the model forward in time". The area of interest- here the Arctic Ocean is overlaid with a three-dimensional grid. The geometry of this grid can be as simple or complicated

Times' reports! Arctic climate change and the consequences for microalgae Contribution to the scientific expert reports section on the website of Scientific Year 2016/17 Resistant Arctic microalgae (De [...] (Deutschlandfunk, 25.1.2017) Radio interview on the responses of Arctic phytoplankton to climate change on the occasion of the Arctic Frontiers conference 2017, Deutschlandfunk. Tiny algae, hugely resilient [...] important source of food in the oceans. Dr Clara Hoppe of the Alfred Wegener Institute examines how changed living conditions as a result of climate change affect Arctic microalgae. Algal diet (Rheinpfalz

nutrients and carbonate chemistry parameters in the Fram Strait and the Central Arctic Ocean. To monitor such parameters in the ocean, it is common practice to analyze discrete water samples obtained e.g. by [...] productivity, strength of the biological carbon pump) are linked in the present-day and future Arctic ocean, as well as to which extent this relationship is driven by differences between functional groups [...] and where nutrients and CO 2 are distributed in the ocean, which has implications for primary and bacterial production and CO 2 uptake by the ocean. In order to understand how such biogeochemical cycles

biomass of three epibenthic invertebrates from the deep-sea observatory HAUSGARTEN (Fram Strait, Arctic Ocean). Marine Ecology Progress Series 602: 15-29. Taylor, J., Krumpen, T., Soltwedel, T., Gutt, J. [...] The vertically facing towed camera system OFOS (Ocean Floor Observation System) is used to assess large-scale distribution patterns of larger epi-benthic organisms and other objects (e.g. dropstones, garbage) [...] assessing temporal variations in benthic community structure, megafaunal composition and diversity at the Arctic deep-sea observatory HAUSGARTEN between 2004 and 2015. Deep-Sea Research I 122: 81-94. Taylor, J

FRAM (Frontiers in Arctic marine Monitoring) HGF infrastructur programme Duration: 01.08.2014 - 31.07.2021 Coordination: Antje Boetius, AWI, Bremerhaven The FRAM Ocean Observing System will be installed [...] installed in the gateway between the North Atlantic and the Central Arctic, representing a highly climate-sensitive and rapidly changing region of the Earth system. FRAM will implement existing and next-generation [...] next-generation sensors and observatory platforms, allowing synchronous observation of relevant ocean variables, as well as the study of physical, chemical and biological processes in the water column and at the

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

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

2020 On thin ice: The Arctic and earth's climate Find out more > DW | 05.05.2020 Polarstern sets records on Arctic climate mission Find out more > Above & Beyond, Canada's Arctic Journal | 31.12.2013 On [...] Institute for Environmental Physics at the University of Bremen. Sea Ice MOSAiC The sea ice in the Arctic and Antarctic is a major component of the global climate system, and changes in its thickness and [...] depends not only on thermodynamic factors like heat in the air and water, or radiation; winds and ocean currents also play an important role by constantly moving and deforming the ice, leading to the creation