Ocean currents are large-scale, persistent movements of seawater driven primarily by wind stress, density gradients (thermohaline circulation), Earth’s rotation, and basin geometry. They form interconnected surface and deep circulatory systems that redistribute heat, salt, nutrients, and dissolved gases across ocean basins. Major surface currents, organized into gyres, are largely wind-driven and Coriolis-deflected, while deep currents follow density-controlled pathways linked to water mass formation at high latitudes. Ocean currents modulate regional and global climate, influence marine biogeochemical cycles, and are central to coupled ocean–atmosphere dynamics represented in numerical circulation and climate models.
According to the EU climate service Copernicus, 2024 was the warmest year since weather records began, and the summer season was especially noteworthy. The changing climate associated with global warming is manifesting itself ...
Environment
Jul 21, 2025
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Currents can affect marine animals' locomotion, energy expenditure and ability to navigate; the force of currents may cause them to drift off-course of their intended trajectory.
Plants & Animals
Jul 17, 2025
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How is ventilation at various depth layers of the Atlantic connected and what role do changes in ocean circulation play? Researchers from Bremen, Kiel and Edinburgh have pursued this question and their findings have now been ...
Earth Sciences
Jul 17, 2025
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Monitoring changes in water temperature and pressure at the seafloor can improve understanding of ocean circulation, climate, and natural hazards such as tsunamis. In recent years, scientists have begun gathering submarine ...
Earth Sciences
Jul 16, 2025
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Amphidromous fish—which migrate between freshwater streams and the sea—can move between habitats thanks to ocean currents. Since island streams are generally small and vulnerable to human impact, understanding how exactly ...
Plants & Animals
Jul 16, 2025
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From more frequent wildfires to rising sea levels, climate change is disrupting ecosystems and upending once-stable weather patterns. One particularly alarming consequence of rising global temperatures is the potential collapse ...
A groundbreaking study in the journal Science, has unveiled how deep ocean currents—known as global overturning circulation—play a pivotal role in shaping the diversity and function of microbial life across the South ...
Ecology
Jul 14, 2025
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While well-documented in the Northern Hemisphere and Antarctica, much less is known about killer whales (Orcinus orca) in Australia. However, orcas are actually sighted year-round in all coastal states and territories. A ...
Plants & Animals
Jul 8, 2025
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Biogeographical regions of marine organisms, i.e., their distribution across different habitats, often overlap well with the major global ocean currents. The geological age of the currents plays a major role in this. The ...
Ecology
Jul 2, 2025
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A patch of the Atlantic Ocean just south of Greenland is cooling while much of the world warms. The origin of this "cold blob" has been linked to weakening ocean currents that help regulate global climate—called the Atlantic ...
Earth Sciences
Jul 1, 2025
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