{"id":335660,"date":"2024-07-06T08:14:49","date_gmt":"2024-07-06T06:14:49","guid":{"rendered":"https:\/\/climatescience.press\/?p=335660"},"modified":"2024-07-06T08:14:51","modified_gmt":"2024-07-06T06:14:51","slug":"an-giant-oyster-shell-discovery-suggests-early-holocene-seas-were-4c-up-to-8c-warmer-than-today","status":"publish","type":"post","link":"https:\/\/climatescience.press\/?p=335660","title":{"rendered":"An Giant Oyster Shell Discovery Suggests Early Holocene Seas Were 4\u00b0C (Up To 8\u00b0C) Warmer Than Today"},"content":{"rendered":"\n
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From NoTricksZone<\/a><\/p>\n\n\n\n

By\u00a0Kenneth Richard<\/a><\/em><\/p>\n\n\n\n

Scientists continue to uncover evidence of a much warmer Early Holocene, when CO2 hovered near 260 ppm.<\/strong><\/p>\n\n\n\n

According to a new study<\/a><\/strong>, an ancient 42-centimeter long oyster shell has been found ~20 km inland from today\u2019s Taipei Basin (Taiwan) coast.<\/p>\n\n\n\n

Extensive isotope analyses (69 of them) of a 5 cm section of the shell reveal that the last time this area was regularly under sea level was about 8000 years ago, or during the Early Holocene.<\/p>\n\n\n\n

Given that oysters reside in water depths of about 2 meters, sea levels can be calculated to have been about 1-3 meters higher than present at that time.<\/p>\n\n\n\n

Also, while modern winter temperatures range from 14-16\u00b0C at this location, the analyses further revealed that the Early Holocene winter sea surface temperatures likely ranged from 15 to 23\u00b0C, which is ~4\u00b0C warmer than today on average, and up to 8\u00b0C warmer if winter temperatures reached 23\u00b0C.<\/p>\n\n\n\n

\u201cwinter temperature in Taipei Basin ~7660 cal BP was estimated as 15-23\u00b0C, warmer than today [14-16\u00b0C]\u201d<\/em><\/p>\n\n\n

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Image Source:\u00a0Li et al., 2024<\/a><\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n
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