Related topics: climate change · earth · nasa · carbon dioxide · atmosphere

Switching on the Atlantic heat pump

34 million years ago, the warm greenhouse climate of the dinosaur age ended, and the colder icehouse climate of today commenced. Antarctica glaciated first, and geological data imply that the Atlantic meridional overturning ...

Origin of massive methane reservoir identified

New research from Woods Hole Oceanographic Institution (WHOI) published Aug. 19, 2019, in the Proceedings of the National Academy of Science provides evidence of the formation and abundance of abiotic methane—methane formed ...

Atacama Desert microbes may hold clues to life on Mars

Microbial life on Mars may potentially be transported across the planet on dust particles carried by wind, according to a study conducted in the Atacama Desert in North Chile, a well-known Mars analogue. The findings are ...

Experts discuss food security from oceans

The world will have an additional 2 billion people to feed over the next 30 years—and doing that without decimating the planet's resources will require exploring as many options as possible. Yet, a significant option—seafood—is ...

Study reveals profound patterns in globally important algae

A globally important ocean algae is mysteriously scarce in one of the most productive regions of the Atlantic Ocean, according to a new paper in Deep Sea Research I. A massive dataset has revealed patterns in the regions ...

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Ocean

An ocean (from Greek Ωκεανός, Okeanos (Oceanus)) is a major body of saline water, and a principal component of the hydrosphere. Approximately 71% of the Earth's surface (an area of some 361 million square kilometers) is covered by ocean, a continuous body of water that is customarily divided into several principal oceans and smaller seas. More than half of this area is over 3,000 meters (9,800 ft) deep. Average oceanic salinity is around 35 parts per thousand (ppt) (3.5%), and nearly all seawater has a salinity in the range of 30 to 38 ppt.

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