Global mean surface temperature and climate sensitivity of the early Eocene Climatic Optimum (EECO), Paleocene–Eocene Thermal Maximum (PETM), and latest Paleocene
نویسندگان
چکیده
منابع مشابه
Productivity feedback did not terminate the Paleocene-Eocene Thermal Maximum (PETM)
The Paleocene-Eocene Thermal Maximum (PETM) occurred approximately 55 million years ago, and is one of the most dramatic abrupt global warming events in the geological record. This warming was triggered by the sudden release of thousands of gigatons of carbon into the atmosphere and is widely perceived to be the best analogue for current anthropogenic climate change. Yet, the mechanism of recov...
متن کاملA statistical interpretation of surface ocean temperature trends during the Paleocene-Eocene Thermal Maximum
often considered a geologic analog to the modern, rapid addition of carbon dioxide to the atmosphere. The ability to assess the sensitivity of many rate-dependent climate change impacts, based on the PETM analogy, hinges critically on the PETM warming rate. Current estimates of the PETM warming rate face considerable problems, for example, due to the nontrivial statistical challenges in account...
متن کاملA continental shelf perspective of ocean acidification and temperature evolution during the Paleocene-Eocene Thermal Maximum
A rapid and large injection of isotopically light carbon into the ocean-atmosphere reservoirs is signaled by a negative carbon isotope excursion (CIE) at the Paleocene-Eocene boundary ~56 m.y. ago. To better understand the extent of ocean warming and acidification associated with the carbon injection we generated elemental and isotopic records of surface and thermocline planktonic foraminifera ...
متن کاملTropical Atlantic climate and ecosystem regime shifts during the Paleocene–Eocene Thermal Maximum
The Paleocene–Eocene Thermal Maximum (PETM, 56 Ma) was a phase of rapid global warming associated with massive carbon input into the ocean–atmosphere system from a 13C-depleted reservoir. Many midlatitude and high-latitude sections have been studied and document changes in salinity, hydrology and sedimentation, deoxygenation, biotic overturning, and migrations, but detailed records from tropica...
متن کاملDeep-sea temperature and circulation changes at the Paleocene-Eocene Thermal Maximum.
A rapid increase in greenhouse gas levels is thought to have fueled global warming at the Paleocene-Eocene Thermal Maximum (PETM). Foraminiferal magnesium/calcium ratios indicate that bottom waters warmed by 4 degrees to 5 degrees C, similar to tropical and subtropical surface ocean waters, implying no amplification of warming in high-latitude regions of deep-water formation under ice-free cond...
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ژورنال
عنوان ژورنال: Climate of the Past
سال: 2020
ISSN: 1814-9332
DOI: 10.5194/cp-16-1953-2020