by Malcolm Light Below is Malcolm Light's Arctic methane growth diagram, updated in line with recent mean atmospheric methane concentrations and temperature data. [ click on images to enlarge ] NOAA mean globally-averaged marine surface data show high increases in methane levels recently, which were used to generate the trends and curves to the year 2030 in above image. [ from earlier post ] NASA temperature data as adjusted by Sam Carana on the right show the potential for a mean temperature anomaly from pre-industrial of 3°C anomaly to occur late in 2022 (blue trend). By extension, a 4°C anomaly could occur in late 2023 and a 5°C anomaly in late 2024. Above data was used to determine a trend line for exponentially increasing atmospheric methane increase, as well as where along the trend lines the surface atmospheric temperature anomalies would occur. A surface atmospheric temperature anomaly of 10°C was recorded in France in the summer of 202...