Manmade Global Warming - New Extremes, page-9377

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    Of the past 400 years, the six hottest years for sea surface temperatures on the Great Barrier Reef have occurred since 2016, according to an Australian study, Highest ocean heat in four centuries places Great Barrier Reef in danger, published this month.

    So who was measuring sea surface temperatures on the GBR 400 years ago?
 
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