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.
It is well documented that the Gulf Stream plays a pivotal role in the climate system through its transfer of heat, which ultimately supplies warmth to northern latitudes in the North Atlantic. What remains less well understood ...
Earth Sciences
Feb 12, 2026
0
53
Since the beginning of January, an unusually long period of easterly winds has caused the average water level in the Baltic Sea to fall to a historic low. Measurements at the Swedish Landsort-Norra gauge show values that ...
Earth Sciences
Feb 9, 2026
0
178
The climate fiction movie The Day After Tomorrow, released in 2004, popularized the devastating effects of sudden climate change on Earth. The plot dramatizes the consequences of a shut-down in an ocean current, and features ...
Environment
Feb 9, 2026
0
16
Large blooms of seaweed are increasingly being reported along coastlines globally, from Europe and Asia to the tropics and beyond.
Ecology
Feb 9, 2026
0
22
A new report has revealed that a dramatic population bloom of the common octopus (Octopus vulgaris) off the South West coast is having significant effects on fisheries and marine ecosystems.
Plants & Animals
Jan 27, 2026
0
49
Narrow bands of ocean covering just over one-third of the world's seas are responsible for absorbing nearly three-quarters of the carbon dioxide that oceans pull from the atmosphere, new research shows. The study, published ...
Earth Sciences
Jan 27, 2026
2
43
Accurate measurements of surface currents are crucial for coastal monitoring, rip current detection, and predicting the path of pollutants. Several methods exist to measure surface currents, some of which are costly and time-consuming. ...
Earth Sciences
Jan 26, 2026
0
23
Stronger El Niño events are more likely when springtime surface waters in the western Pacific Ocean become unusually salty, a new study in Geophysical Research Letters suggests. Traditionally, scientists have focused on temperature ...
In the same week that New South Wales experienced four shark attacks, Victorian beachgoers were warned about stinging jellyfish.
Plants & Animals
Jan 24, 2026
0
67
During the last ice age, the Atlantic Ocean's powerful current system remained active and continued to transport warm, salty water from the tropics to the North Atlantic despite extensive ice cover across much of the Northern ...
Earth Sciences
Jan 21, 2026
0
23
