![]() ![]() These all pose significant risks to coastal communities, vulnerable ecosystems and economies, and the global climate. The global ocean is facing several challenges, including rising sea levels, changes in ocean currents, warming, acidification and deoxygenation, and loss of polar ice. ![]() This anomaly may be linked to a decrease in biological production observed in 2021. The analysis highlights the critical role of deep ocean ventilation, which is controlled by several ocean processes including circulation patterns and heat flux. The OSR 7 reports a record low oxygen level in the southern Adriatic Sea, deep below the subsurface ocean up to almost 600m below the surface. Monitoring trends in biogeochemical indicators such as oxygen can reveal the effecs of climate change on the ocean and marine ecosystems. ![]() Oxygen is critical for the survival of aquatic plants and animals, and its dynamics in the ocean involve interconnected physical and biological processes. The tool will be an effective addition to the management of marine resources, the protection of marine ecosystems, and the development of the “blue economy”.Īnother new tool in the OSR 7 measures the interannual variation of dissolved oxygen in seawater between 19 through a joint analysis of Copernicus reanalysis data from the Mediterranean Sea and in situ data from the southern Adriatic Sea. The new tool has been tested as a proof of concept in the Iberian Sea and the Bay of Biscay, demonstrating its ability to categorise both upwelling and downwelling events and to produce high-resolution 2D maps. New tools and approachesĪmong several new tools, the OSR 7 presents an innovative method for monitoring coastal upwelling using high-frequency radar. These findings provide a scientific basis for long-term observations that may reveal climate-induced changes in the composition of these organisms in the future. The study revealed important global trends in plankton levels and highlighted regional variations. The OSR 7 presents a detailed two-decade satellite analysis of four major types of phytoplankton in the Atlantic Ocean. ![]() Long term shifts in biological life can also reveal changes in underlying ocean patterns. For a two-year period around 2018, this heat exchange decreased by 4–9 % compared to the 1993-2020 average. The OSR7 examined inter-basin transports around the Southern Ocean, which can trigger changes in global ocean circulation, and found a surprising discrepancy between observations and model results – one that will inform future strategies, improvements, and developments in ocean and climate monitoring.Įlsewhere, ocean reanalysis data revealed record low heat exchange across the Greenland-Scotland Ridge, a critical oceanic system that plays a key role in shaping the Arctic climate and is also linked to the AMOC. Marine scientists continue to sharpen their focus on the Atlantic Meridional Overturning Circulation (AMOC), part of a critical global network of currents that transfer heat and nutrients around the planet. The ocean is a dynamic system that shapes the Earth’s climate, supports biodiversity and sustains ecosystems around the world. Such trends are important because the vitality of the ocean is deeply linked with that of the planet, and all life on it. Two subsurface water masses explained more than half of the variability in deep ocean heat content in the Iberian-Biscay-Irish regional seas, highlighting the complex interplay between long-term changes and natural variability in the ocean. While the upper surface of the ocean in this region showed no significant trends a long-term warming trend emerged in the deep ocean waters below 150m. For example, the OSR 7 shows a significant increase in subsurface water ocean heat content – the amount of heat stored in the ocean – in the Iberian-Biscay-Irish regional seas between 19. While the global picture is important, there are many complex and interacting ocean systems at play below the surface and at regional scales. According to Copernicus Marine data, global ocean heat content reached its highest level on record in 2022, with a sustained temperature increases in the upper 2000m of the ocean.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |