Mauna Loa is the observatory in the mid-Pacific where the first readings of CO2 concentrations were established by Keeling. The latest recorded reading of 410 ppm was the highest ever and 10 points above last year’s level. The UN goal is to keep CO2 concentratins wo rldwide to a limit of 400 ppm and the environmentalist organisation led by Bill Kibben is 350.org. The latter movement’s ambition for a 350 ppm limit is now far surpassed.
This article from Common Dreams reports and links the climatic measurement to the Marches for Scientists and for Climate that follow in quick succession and the Trump administration withdraws support for action to ameliorate climate disruption due to human activity.
If you enter CO2 in the search option of this blog, you will find links to several recent articles that reinforce the news of rapid progression in the unpreceented rise of GHGs (green house gases)