A question
Interesting chart.
How does on account for the variance in the years 1965-1985? That would seem to be the years when our worst polution would have occurred. Yet, only after some controls were adopted does the chart seem to shoot up. Does it tie into rising polution levels in places other than here?
Also could be lag time I suppose but that is why I am often befuddled by conflicting info on this climate thing.