Consistency and Challenges in the Ocean Carbon Sink Estimate for the Global Carbon Budget. Front. Mar. Sci. 7, 571720. doi.org/10.3389/fmars.2020.571720 •[Arctic high-resolution] Schourup-Kristensen [...] nsen, V., Wekerle, C., Wolf-Gladrow, D., Völker, C. (2018): Arctic Ocean biogeochemistry in the high resolution FESOM 1.4-REcoM2 model, Progress in Oceanography, 168, 65-81, doi:10.1016/j.pocean.2018.09 [...] macrozooplankton, Karakuş et al., 2022 ), and to include the sensitivity of phytoplankton growth to ocean acidification ( Seifert et al., 2022 ). Main REcoM references (chronological order): •[3 phytoplankton

The role of clouds and warm air masses from the open ocean for the rapid warming of the Arctic is at the heart of a recent Alfred Wegener Institute project on Svalbard. The researchers are applying a new

and Risks BMBF nuArctic: Towards a better understanding of the nutrient cycles in the ‘new’ Arctic Ocean and implications for future primary productivity and carbon export OceanICU : OceanICU is a Horizon [...] produce new data, information and understanding on the role of the Ocean in the global carbon cycle. ERC OceanPeak: The global ocean carbon cycle after peak emissions: Dynamics and process attribution [...] future ocean in the Earth system – quantifying coupled cycles of carbon, oxygen, and nutrients for determining and achieving safe operating spaces with respect to tipping points Horizon 2020: OceanNETs :

under pressure. However, jellyfish in the world’s oceans could actually benefit from the rising water temperatures – also and especially in the Arctic Ocean, as researchers from the Alfred Wegener Institute [...] Institute have now successfully shown. In computer models, they exposed eight widespread Arctic jellyfish species to rising temperatures, sea ice retreat and other changing environmental conditions. The result: [...] triple the size of its habitat – with potentially dramatic consequences for the marine food web and Arctic fish populations. The study was just released in the journal Limnology and Oceanography.

Nippon Foundation (NF) Ocean Affairs Department, Prof. Dr Antje Boetius, as AWI Director, Dr Sophie Seeyave, representative and CEO of the Partnership for Observation of the Global Ocean (POGO), and State Secretary [...] Centre of Excellence, around half returned to their home countries, while the others moved on to the Arctic, the Antarctic, Canada, Australia, the Netherlands or Ireland, and some stayed in Germany at the [...] we will all remain connected in the future - as researchers and as people who are committed to our oceans in times of climate change. Pedro Montoro (alumni) I am Pedro Montoro, originally from Cuba and attended

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

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

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

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