CO2-FORCED CLIMATE THRESHOLDS DURING THE PHANEROZOIC
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dc.contributor.author | Royer D.L. | |
dc.date.accessioned | 2024-11-24T05:02:14Z | |
dc.date.available | 2024-11-24T05:02:14Z | |
dc.date.issued | 2006 | |
dc.identifier | https://www.elibrary.ru/item.asp?id=14096583 | |
dc.identifier.citation | Geochimica et Cosmochimica Acta, 2006, 70, 23 SPEC. ISS., 5665-5675 | |
dc.identifier.issn | 0016-7037 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/46574 | |
dc.description.abstract | The correspondence between atmospheric CO2 concentrations and globally averaged surface temperatures in the recent past suggests that this coupling may be of great antiquity. Here, I compare 490 published proxy records of CO2 spanning the Ordovician to Neogene with records of global cool events to evaluate the strength of CO2-temperature coupling over the Phanerozoic (last 542 my). For periods with sufficient CO2 coverage, all cool events are associated with CO2 levels below 1000 ppm. A CO2 threshold of below ~500 ppm is suggested for the initiation of widespread, continental glaciations, although this threshold was likely higher during the Paleozoic due to a lower solar luminosity at that time. Also, based on data from the Jurassic and Cretaceous, a CO2 threshold of below ~1000 ppm is proposed for the initiation of cool non-glacial conditions. A pervasive, tight correlation between CO2 and temperature is found both at coarse (10 my timescales) and fine resolutions up to the temporal limits of the data set (million-year timescales), indicating that CO2, operating in combination with many other factors such as solar luminosity and paleogeography, has imparted strong control over global temperatures for much of the Phanerozoic. © 2006 Elsevier Inc. All rights reserved. | |
dc.subject | Neogene | |
dc.subject | Cretaceous | |
dc.subject | Jurassic | |
dc.subject | Ordovician | |
dc.title | CO2-FORCED CLIMATE THRESHOLDS DURING THE PHANEROZOIC | |
dc.type | Статья | |
dc.identifier.doi | 10.1016/j.gca.2005.11.031 | |
dc.subject.age | Cenozoic::Neogene | |
dc.subject.age | Кайнозой::Неоген | |
dc.subject.age | Mesozoic::Cretaceous | |
dc.subject.age | Мезозой::Меловая | |
dc.subject.age | Mesozoic::Jurassic | |
dc.subject.age | Мезозой::Юрская | |
dc.subject.age | Paleozoic::Ordovician | |
dc.subject.age | Палеозой::Ордовикская |
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