Rising greenhouse gases have cooling effect on Antarctica’s atmosphere

A “negative greenhouse effect” means rising concentrations of CO2 and methane have slightly cooled parts of Antarctica’s upper atmosphere, but that could change as the air becomes more humid

​A “negative greenhouse effect” means rising concentrations of CO2 and methane have slightly cooled parts of Antarctica’s upper atmosphere, but that could change as the air becomes more humid A “negative greenhouse effect” means rising concentrations of CO2 and methane have slightly cooled parts of Antarctica’s upper atmosphere, but that could change as the air becomes more humid