New data released Monday showed atmospheric carbon dioxide reached a monthly average of 419 parts per million in May [a 33% increase in 63 years, in January 1958, when scientist Charles David Keeling first started measuring atmospheric CO2 consistently (I was born January 8, 1958), at the pristine Mauna Loa mountaintop observatory in Hawaii, the CO2 level stood at 316 ppm, and a 50% increase from the pre-industrial level of 280 ppm, read my https://earthnewspaper.com/climatechangedenial], the maximum reading ever recorded since measurements began 63 years ago and the highest level the planet has experienced in more than 4 million years. New data released Monday showed atmospheric carbon dioxide reached a monthly average level of 419 parts per million in May, which is not only the maximum reading ever recorded since accurate measurements began 63 years ago but also the highest level the planet has experienced in over 4 million years. Scientists from the National Oceanic and Atmospheric Administration (NOAA) and Scripps Institute of Oceanography at the University of California, San Diego working at NOAA’s Mauna Loa Atmospheric Baseline Observatory in Hawaii said the May measurements – an increase from 417 parts per million (ppm) in May 2020 – mean that “the atmospheric burden of CO2 is now comparable to where it was during the Pliocene Climatic Optimum, between 4.1 and 4.5 million years ago, when CO2 was close to, or above 400 ppm.” https://childrenshealthdefense.org/defender/earth-atmospheric-co2-highest-level-4-million-years
