Too much for me to summarize with a few quotes.
So I will present the conclusion, and many of the charts related to the Arctic temperatures, but not the Antarctica charts.
I recommend reading the whole 18 page pdf article:
https://wattsupwiththat.com/2021/01/28/global-ice-story/
"SUMMARY
Multidecadal Oscillations in the Pacific and the Atlantic are acknowledged to be the result of natural processes.
The warm mode of the Pacific results in warm water off Alaska that can enter the arctic through the Bering Strait and produce arctic ice melt.
The warm mode of the AMO also results in warming in the North Atlantic waters, which are carried by the North Atlantic current into the arctic reducing ice depth and extent.
When you combine the two (ocean) cycles, you can explain the temperature and ice cover variances of the past 110 years for the Arctic.
Greenland data suggests the recent warming falls far short of earlier warming periods during the current interglacial and short of the warming early in the 20th century.
The Antarctic has cooled and ice has increased in recent years although volcanism near the Antarctic peninsula leads to local water warmth and sea ice melting.
Prior to the recent melting, the ice cover reached a long-term record high."
