In message ,
Alastair writes
The 1962 cold weather seems to have coincided with the Russians testing
a hydrogen bomb in the Arctic. Could this have also produced a Scandi
High?

I believe there were stories around in the 1950s and early 1960sthat
atomic and subsequently hydrogen bomb tests might be affecting the
weather, but I'm not aware of any convincing evidence being produced.
--
John Hall
"Hegel was right when he said that we learn from history
that man can never learn anything from history."
George Bernard Shaw (1856-1950)