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

Arctic sea ice loss leads to more frequent strong El Niño events

Over the last 40 years, a rapid shrinking of Arctic sea ice has been one of the most significant indicators of climate change. The amount of sea ice that survives the Arctic summer has declined 13% per decade since the late ...

Powerful hurricanes get second wind in Europe

Stronger hurricanes that are re-energized by jet stream winds are twice as likely to cross the Atlantic and wreak havoc in Europe than weaker ones, new research has found.

2022 Arctic summer sea ice tied for 10th-lowest on record

According to satellite observations, Arctic sea ice reached its annual minimum extent on Sept. 18, 2022. The ice cover shrank to an area of 4.67 million square kilometers (1.80 million square miles) this year, roughly 1.55 ...

Capturing ocean turbulence at the underbelly of sea ice

Turbulence in the sea plays a key role in mixing ocean waters and transporting nutrients, heat, and dissolved gases. Sources of ocean turbulence are highly varied and include wind, currents, heating and cooling cycles, and ...

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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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