According to Mauna Loa, CO2 was 417 ppm in May, 2.4ppm higher than peak of 2019. The rise has occurred irrespective of the global economy shutdown. Air travel

According to Mauna Loa, CO2 was 417 ppm in May, 2.4ppm higher than peak of 2019. The rise has occurred irrespective of the global economy shutdown. Air travel grounded. Factories closed and huge numbers of cars off the road. Keeling at the Scripps Institute has said “People may be surprised to hear that the response to the coronavirus outbreak hasn’t done more to influence CO2 levels,”. Seems that any reduction in CO2 levels is pretty much impossible to distinguish from natural variability. So what's next? A permanent shutdown?