Don't rule out severe global climate change yet

A key metric of global warming is the Earth's "equilibrium climate sensitivity" (ECS), which represents the global surface warming that will accompany a doubling of atmospheric carbon dioxide. For nearly four decades, ECS ...

Global warming—worrying lessons from the past

Fifty-six million years ago, the Earth experienced an exceptional episode of global warming. In a very short time on a geological scale, within 10 to 20,000 years, the average temperature increased by five to eight degrees, ...

2018-2022 expected to be abnormally hot years

This summer's worldwide heatwave makes 2018 a particularly hot year. And the next few years will be similar, according to a study led by Florian Sévellec, a CNRS researcher at the Laboratory for Ocean Physics and Remote ...

Stronger evidence for a weaker Atlantic overturning

The Atlantic overturning—one of Earth's most important heat transport systems, pumping warm water northward and cold water southward—is weaker today than any time before in more than 1000 years. Sea surface temperature ...

Warm summers could weaken ocean circulation

Deep convection in the North Atlantic is one of the key components of large-scale ocean circulation. Based on long-term observations, scientists from the GEOMAR Helmholtz Centre for Ocean Research Kiel have now demonstrated ...

Record jump in 2014-2016 global temperatures largest since 1900

Global surface temperatures surged by a record amount from 2014 to 2016, boosting the total amount of warming since the start of the last century by more than 25 percent in just three years, according to new University of ...

Rising temperatures are curbing ocean's capacity to store carbon

If there is anywhere for carbon dioxide to disappear in large quantities from the atmosphere, it is into the Earth's oceans. There, huge populations of plankton can soak up carbon dioxide from surface waters and gobble it ...

Understanding multi-decadal global warming rate changes

Despite persistently increasing greenhouse gas emissions throughout the 20th and early 21st centuries, the globally averaged surface temperature has shown distinct multi-decadal fluctuations since 1900, including two weak ...

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