CO₂ averaged about 410 parts per million in the atmosphere during the last week of March. Ten years ago, it averaged ~387 ppm in that week.

I spotted the animation above on Twitter the other day. It illustrates the growth of planet-warming carbon dioxide in the atmosphere in a novel and particularly compelling way, so I thought I’d share it here.

The animation shows how the concentration of CO2 in the atmosphere has changed week-by-week and year-by-year starting at the beginning of Janua