Long-term monitoring at a site in the subantarctic region south of Australia combined with ship-based observations reveals three distinct phases between cycles of phytoplankton productivity and dissolved iron.
Oceans
Posted inResearch Spotlights
How Greenland’s Glacial Troughs Influence Ocean Circulation
Glacial troughs in Antarctica promote mixing of warm and cold water, affecting global climate. A new study explores whether the same is true in troughs along Greenland’s coastline.
Posted inResearch Spotlights
Water Density Shifts Can Drive Rapid Changes in AMOC Strength
High-latitude variations in density, which appear to be driven by changes in atmospheric pressure, can propagate to midlatitudes and affect the current’s strength within just a year.
Posted inResearch Spotlights
Robotic Floats Quantify Sinking Carbon in the Southern Ocean
An estimated 2.69 billion tons of carbon are exported to the deep sea every year from the Southern Ocean.
Posted inAGU News
Submerged in Science
New generations of submersibles and retired stalwarts of the seas are helping scientists put the depths of the ocean at the tips of our fingers.
Posted inScience Updates
Ocean Current Affairs in the Gulf of Mexico
Multinational and multidisciplinary studies of the past and present of the Gulf’s Loop Current are helping to reveal what might be in store for coastal communities.
Posted inResearch Spotlights
Seaweed Surges May Alter Arctic Fjord Carbon Dynamics
Climate change–accelerated seaweed growth could cause seaweed-dependent microbes to proliferate and consume more oxygen, leading to a rise in oxygen-starved zones.
Posted inNews
Have We Finally Found the Source of the “Sargassum Surge”?
The complexity of modeling the tropical Atlantic makes identifying the source of the ongoing seaweed blooms difficult.
Posted inResearch Spotlights
The Uncertain Fate of the Beaufort Gyre
Climate models produce widely varying predictions for what will happen to this influential ocean current, but most models predict it will weaken or stop.