Archives par mot-clé : ppm

climate-debate

Daily carbon dioxide crosses 430 ppm

by Arctic News, Mar 8, 2025

The above image illustrates the threat of a huge temperature rise. The red trendline warns that the temperature could increase at a terrifying speed soon.

The global surface air temperature was 13.87°C on March 8, 2025, the highest temperature on record for this day. This is the more remarkable since this record high temperature was reached during a La Niña.

The shading in the image highlights the difference between El Niño conditions (pink shading) and La Niña conditions (blue shading). An El Niño pushes up temperatures, whereas La Niña suppresses temperatures. We’re currently in a La Niña, so temperatures are suppressed, but this is predicted to end soon. NOAA predicts a transition away from La Niña to occur next month.

The transition from La Niña to El Niño is only one out of ten mechanisms that could jointly cause the temperature rise to accelerate dramatically in a matter of months, as described in a previous post. Another one of these mechanisms is the increase in greenhouse gas concentrations.
…