Global climate has been quite variable for thousands of years! Thus, the current warming should be viewed largely as a natural phenomena!
Like there were several recorded significant warming periods in the last 2,000 years or so, there were apparently also at least two little ice ages!
So several dramatic lasting changes in climate were recorded in the pre-industrial age!
Notice again that major volcanic activity and its consequences have been linked to significantly colder climate periods. Vice versa, the absence of major volcanic activity is linked to warmer periods like the one we are enjoying now!
"The Late Antique Little Ice Age (LALIA) was a long-lasting Northern Hemispheric cooling period in the 6th and 7th centuries AD, during the period known as Late Antiquity. The period coincides with three large volcanic eruptions in 535/536, 539/540 and 547. The volcanic winter of 536 was the early phenomenon of the century-long global temperature decline. One study suggested a global cooling of 2 °C (3.6 °F)."
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