CO2 now comparable to levels seen 4 million years ago - NOAA | Daily News

CO2 now comparable to levels seen 4 million years ago - NOAA

US: The Carbon dioxide (CO2) levels peaked more than 50 per cent higher than pre-industrial levels in May, comparable to levels seen about 4 million years ago, according to scientists.

The team from National Oceanic and Atmospheric Administration (NOAA) said that CO2 measured at NOAA’s Mauna Loa Atmospheric Baseline Observatory peaked for 2022 at 421 parts per million in May, an increase of 1.8 ppm over 2021.

Scientists at Scripps Institution of Oceanography at the University of California San Diego, which maintains an independent record, calculated a monthly average of 420.78 ppm.

Prior to the Industrial Revolution, CO2 levels were consistently around 280 ppm for almost 6,000 years of human civilisation. Since then, humans have generated an estimated 1.5 trillion tonnes of CO2 pollution, much of which will continue to warm the atmosphere for thousands of years. Temperatures then averaged 7 degrees Fahrenheit higher than in pre-industrial times, and studies indicate that large forests occupied today’s Arctic Tundra. - THE STATESMAN

Add new comment