20 kyr temperature, CO2, sea level, and the Great Barrier Reef


This graph is from the excellent short paper by Brisbane geoscientist Dr. Guy LeBlanc Smith, “Science Exposes Delusions: Great Barrier Reef, Kakadu and the Human-caused climate change and carbon “pollution” myths“. Dr. Smith points out that “It is fact that the vast bulk of the Great Barrier Reef area was exposed land and above sea level, prior to 10,000 years ago, when sea levels were over 70m lower than present (see graphs below with evidence). There was no great coral reef there until recently. … A continual current of coral spawn flows down our coasts and will repopulate any suitable growth substrate within a year. This is self evident to any diver who has looked at the thumb-nail sized corals growing on sea grass stems. This holds true also for with the Leeuwin Current on the west coast of Australia”. The graph also clearly shows the ~800-1000 year lag of CO2 after temperature.

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