Apparent temperatures at Bourke, New South Wales, during the January 1896 heatwave suggest extreme warmth in that period. (bom.gov.au)
Drops in pH signal more acidic waters, which can hinder a coral's ability to build its skeleton, while extreme warmth can make it expel the photosynthetic algae that provide much of its food energy. (sciencedaily.com)
relative extreme warmth up in the Arctic Ocean for December. (realclimate.org)