Stratocumulus clouds became unstable as CO2 concentrations increased, simulations reveal.
On 2/25/19 at 11:00 AMIncreasing concentrations of atmospheric carbon dioxide could lead to the disappearance of stratocumulus cloud decks. This could result in global temperatures increasing by 8 degrees Celsius—on top of warming from greenhouse gas emissions., researchers have modeled the impact atmospheric CO2 has on stratocumulus clouds. These clouds are characterized as being large, rounded masses that form in groups—or decks.
Stratocumulus clouds are different to other clouds, as instead of being sustained by heating from the surface of the Earth they are maintained by cooling at the top. This makes them more vulnerable to increasing levels of greenhouse gasses in the atmosphere. Once the clouds had disappeared, the models showed a huge spike in surface warming, with global temperatures increasing by 8 C.
"I think and hope that technological changes will slow carbon emissions so that we do not actually reach such high CO2 concentrations,” study author Tapio Schneider, from the California Institute of Technology, said in a statement. “But our results show that there are dangerous climate change thresholds that we had been unaware of.”
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