Keep up with essential planning news and commentary, delivered to your inbox every Monday and Thursday.
Carbon Dioxide Levels Reach Record Level in March
"For the first time since we began tracking carbon dioxide in the global atmosphere, the monthly global average concentration of this greenhouse gas surpassed 400 parts per million in March 2015, according to [National Oceanic and Atmospheric Administration] NOAA’s latest results," writes Sandy Dechert for CleanTechnica.
Credit: NOAA Research
"The measure is the key indicator of the amount of planet-warming gases man is putting into the atmosphere at record rates, and the current concentrations are unprecedented in millions of years," writes Adam Vaughan for The Guardian.
"NOAA's latest results confirm that carbon dioxide is increasing 100 times faster in the age of humans than it has in natural rises in the past," adds Dechert.
CO2 levels rising even when CO2 emissions don't increase
Dechart points to data from the International Energy Agency (IEA) indicating "that global emissions from fossil fuel energy use had stayed at the same levels last year as in 2013" but NOAA reports "that carbon dioxide concentrations actually grew from 2012 to 2014 by 2.25 ppm per year, the greatest amount ever recorded over three consecutive years."
“Elimination of about 80% of fossil fuel emissions would essentially stop the rise in carbon dioxide in the atmosphere, but concentrations of carbon dioxide would not start decreasing until even further reductions are made, and then it would only do so slowly,” states Butler.
The Guardian's Karl Mathiesen writes on the effects of rising global greenhouse gas emissions in the form of increased extreme weather events.
Global warming over the last century means heat extremes that previously only occurred once every 1,000 days are happening four to five times more often, the study published in Nature Climate Change said.