New Study: Coral Bleaching ‘Repeatedly Occurred’ Throughout The Warmer-Than-Today Mid-Holocene

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New Study: Coral Bleaching ‘Repeatedly Occurred’ Throughout The Warmer-Than-Today Mid-Holocene

By Kenneth Richard on 18. January 2021
 
Mid-Holocene South China Sea maximum temperatures were ~3.5°C warmer (33.5°C vs. today’s 29.9°C) about 5000 yrs ago, when corals experienced an “optimum coral growth period”. There were “numerous coral bleaching episodes” even when temperatures weren’t as high, as coral bleaching is naturally occurring.

Key points from a  new study (Wang et al., 2021) that throws cold water on the claims that modern coral bleaching is unprecedented, unusual, or unnatural.

• “Compared with the average Sr/Ca-SST of the 1990s, the Sr/Ca-SST between 6800 and 5000 B.P. was 0.9°C–0.5°C higher.”

• “A warmer climate makes the mid-Holocene an optimum coral growth period when corals grew abundantly (Clark et al., 2018; Yan et al., 2019).”
 
https://notrickszone.com/2021/01/18/new-study-coral-bleaching-repeatedly-occurred-throughout-the-warmer-than-today-mid-holocene/