important the ocean is for us: “The global ocean is the life insurance of our planet. It has greatly slowed down global surface warming. However, this service comes at a high cost: The ocean is acidifying [...] and climate change are putting pressure on natural sinks on land and in the oceans. For example, in the past decade, the oceans have absorbed 10.5 metric gigatons per year on average, or 26 percent of overall [...] conditions have reduced the oceans’ capacity to absorb CO2 by roughly 6 percent,” says Prof Judith Hauck, an environmental researcher at the AWI, who coordinated the content on the ocean sinks. An important

we do about the ocean depths. Yet the deep sea is not a habitat fully separated from the surface; it is already undergoing dramatic changes in response to warmer water, ocean acidification and environmental [...] the so-called mid-oceanic ridges – volcanically active mountain chains that usually extend one to three kilometres above the seafloor and can be found in all (of) the world’s oceans. With a total length [...] standards. For another, food is harder to come by. The central Arctic Ocean is largely covered with ice and – unlike the Antarctic’s Southern Ocean – surrounded by landmasses. Exchanges with the Atlantic and Pacific

marine organisms in the fjords of Spitsbergen react to increased UV radiation and increasing ocean acidification. The geosciences, on the other hand, focus on changes in permafrost soils and glacier systems [...] Without Borders in the Arctic The Svalbard archipelago is located east of Greenland in the Arctic Ocean. The archipelago is home to Ny-Ålesund, one of the northernmost settlements in the world. Depending

life in the ocean, in particular carbon, nitrogen, phosphorus and silicon, as driven by physical, biological and chemical processes. Marine biogeochemical cycles play a relevant role in ocean productivity [...] system. The elements of the biogeochemical cycles are considered essential ocean variables (EOV) as defined by the Global Ocean Observing System. In order to study biogeochemical cycles, we need to measure [...] alkalinity, which provides information about the buffer capacity of seawater, relevant to study ocean acidification. The facility is divided in three modules based on scientific topics, as follows. Nutrients:

all latitudes. Cold-water corals (CWC) have long been considered particularly vulnerable to ocean acidification, but in the naturally acidified fjords of Patagonian Chile, we found large populations of CWC

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