State of Our Climate

​Recent Data
Preindustrial GHG
​concentrations (WMO)

CO2 278 ppm ​
Methane ​722 ppb
Nitrous oxide​ 270 ppb
Atmospheric CO2  at a 3.5 million year high, and increasing at an unprecedented rate (WMO 2017)
PDF (hi def) of big picture  April 2018
Low definition image of April 2018 poster presentation of atmospheric GHG pollution climate system data sets and direct effects 
PDF (hi def)  of big picture March 2019 
Low definition image of March 2019 big picture trending rapidly to biopshere collapse
Worst case scenario 18 May 2020 (typos fixed)