Science HAS shown...
That both the warming AND cooling "spells" you cite were geographically LOCAL phenomena (to be clear: NOT global in scope) that did NOT affect the AVERAGE TEMPERATURE at all over time. This has been the challenge set to Climatology by you and yours, and the climatologists have gone to great lengths to now ANSWER that question for you.
But we see now, that the question itself was a blind, as you are now demonstrating that you will not accept the answers in any case.
And, the "peaks" you cite were nowhere near the highs of today. We are well into a new era of steadily growing temperatures. How hot will it have to get, before you accept the clear implications of it? And just how far PAST the critical-change threshhold will your denial timeline take us?
Or, to put it another, perhaps more SANE way: just how F*cked ARE we, thanks to YOU?