Well the winter of 1962-3 was exceptionally cold in our timeline, of course.
Nitrogen oxides - as I recall these lead to more ozone, not less (see smog and tree damage in e.g. the Black Forest prior to catalytic converters becoming widespread), though I could be out of date, of course, as it isn't an area I've kept up with research in.
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timeasmymeasure
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Date: 2012-05-12 11:25 pm (UTC)Nitrogen oxides - as I recall these lead to more ozone, not less (see smog and tree damage in e.g. the Black Forest prior to catalytic converters becoming widespread), though I could be out of date, of course, as it isn't an area I've kept up with research in.