Blue skies hopefully not ahead.
Climate change could kill clouds, triggering a disastrous scenario for an already warming Earth, according to a new study.
If humans fail to curb carbon dioxide emissions, the gases could destroy stratocumulus clouds — the large, lumpy, blanket-like clouds that help keep the Earth cool.
Without them, global temperatures could rise as much as 8 degrees Celsius (14 degrees Fahrenheit), melting the polar ice caps and drowning coastal cities.
While this worst-case scenario is unlikely, it’s not impossible.
Currently, atmospheric CO2 levels measure around 410 parts per million. But if they rise above 1,200 ppm — which, if emissions continue at the current rate, would be reached within 100 to 150 years — stratocumulus clouds will begin to disappear.
The findings were published in Nature Geoscience.
“I think and hope that technological changes will slow carbon emissions so that we do not actually reach such high CO2 concentrations,” Tapio Schneider, lead author of the study, said in a statement.
“But our results show that there are dangerous climate change thresholds that we had been unaware of.”
Stratocumulus clouds are Earth’s most common cloud and cover about 20 percent tropical oceans — reflecting between 30 and 60 percent of shortwave radiation back into space.
“Schneider and co-authors have cracked open Pandora’s box of potential climate surprises,” Matt Huber, a paleoclimate modeler, told Qanta Magazine.
Schneider added that their findings point to a “blind spot in climate modeling,” since current climate simulations often don’t take factors like cloud coverage into account.
More research is needed into the team’s findings and they’ve called on fellow scientists to investigate areas of their model where they had to draw estimates.


