Medieval Climate Anomaly Now Confirmed In Southern Hemisphere On All Four Continents"...For a long time it has been said that the Medieval Warm Period was a purely North Atlantic phenomenon.
This has proved to be wrong...
On 29 June 2019, a paper by Lü--The Medieval Climate Anomaly in Antarctica:
...A generally warm MCA compared to the subsequent Little Ice Age (LIA) was found for the Subantarctic Islands south of the Antarctic Convergence, the Antarctic Peninsula, Victoria Land and central West Antarctica.
A somewhat less clear MCA warm signal was detected for the majority of East Antarctica. MCA cooling occurred in the Ross Ice Shelf region, and probably in the Weddell Sea and on Filchner-Ronne Ice Shelf.
...Main drivers of the multi-centennial scale climate variability appear to be the Southern Annular Mode (SAM) and El Niño-Southern Oscillation (ENSO) which are linked to solar activity changes by nonlinear dynamics..."
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