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

Menacing Florida, Hurricane Ian nears catastrophic Category 5

Hurricane Ian intensified to just shy of catastrophic Category 5 strength Wednesday as its heavy winds began pummelling the US state of Florida, with forecasters warning of life-threatening storm surges after leaving millions ...

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.

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 ...

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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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