The Paleocene–Eocene Thermal Maximum (PETM), alternatively "Eocene thermal maximum 1" (ETM1), and formerly known as the "InitialEocene" or "Late Paleocene Thermal Maximum", a climate event, began at the temporal boundary between the Paleocene and Eoceneepochs. The exact age and duration of the event remain uncertain, with an estimation on the age of about 55.5 ma (million years ago). According to McInerney and Wing 2011, a period of massive carbon injection has been estimated to have lasted <20 ka, with an entire duration of the event at ∼200 ka, with global temperatures increasing by 5–8°C. A study in 2015 isolated two distinct pulses of carbon release, the first lasting less than 2,000 years. Repeated catastrophic carbon release is also more in line with current global warming, involving more than one carbon reservoir. However, a main difference is that during the time of the PETM, the planet was essentially ice-free.
The onset of the PETM has been linked to an initial 5°C temperature rise and to extreme changes in Earth's carbon cycle. The PETM is marked by a prominent negative excursion in carbon stable isotope (δ13C) records from around the globe; more specifically, there was a large decrease in 13C/12C ratio of marine and terrestrial carbonates and organic carbon.
The team reconstructed the state of ocean acidification during the Paleocene-Eocene Thermal Maximum, a climate event marked by a significant rise in global temperatures and a major disruption to ecosystems ...Xinhua. .
Oaks, iconic trees in today's forests, evolved over millions of years, influenced by significant climatic events like the Paleocene-Eocene Thermal Maximum. Fossils found in Austria reveal the... .
BEIJING, Dec ... The team reconstructed the state of ocean acidification during the Paleocene-Eocene Thermal Maximum (PETM), a climate event marked by a significant rise in global temperatures and a major disruption to ecosystems ... Enditem. .
Wing’s research focuses on the Paleocene–Eocene Thermal Maximum, a period of dramatic global warming 55 million years ago ... During the Paleocene-Eocene Thermal Maximum (PETM), a massive amount of ...
(credit. Walter Myers/Stocktrek Images) ...There are a few exceptions, like the Paleocene-Eocene Thermal Maximum (PETM), a burst of sudden warming about 55 million years ago, but few events that old are nearly as well understood ... Comments .
... what we expect in 2100 or 2500," said Wing, the museum's curator of paleobotany whose research focuses on the Paleocene–Eocene Thermal Maximum, a period of rapid global warming 55 million years ago.
...CO2 levels over a 6-million-year period that covered two hyperthermals, the Paleocene-Eocene Thermal Maximum, or PETM, 56 million years ago and Eocene Thermal Maximum 2, ETM-2, 54 million years ago.
The period is now known to scientists as the Paleocene-Eocene Thermal Maximum, PETM for short. The period is considered the warmest time on Earth in the last 65 million years ....
ScottWing points at rocks deposited 56 million years ago during the Paleo-Eocene Thermal Maximum (PETM) episode ... In his presentation, Wing discusses the “Paleocene-Eocene Thermal Maximum” (or PETM) episode that occurred in the Bighorn Basin ... .
Because of its similarities to current warming, the Paleocene-Eocene Thermal Maximum is closely studied to understand how the Earth's environment reacts to a global rise in temperature.
Scientists, he says, regard this as “analogous” to what is happening today ... Packham draws conclusions from events in the PETM, or Paleocene-Eocene Thermal Maximum, a warming period that began sometime around 56.3 million to 55.9 million years ago ... 3.
... poles during one of the warmest periods of the last 66 million years, the Paleocene-Eocene Thermal Maximum, and an open West SiberianSeaway could have contributed to this heat transport at the time.
FuzzyForecast... According to Kaib, an example of this would be the Paleocene-Eocene Thermal Maximum that took place some 56 million years ago, when the Earth warmed by 9 to 14 degrees Fahrenheit during a period of transition between geological epochs.
... tropical ocean oxygenation during the Paleocene-Eocene Thermal Maximum (PETM) ... Simone Moretti et al, Oxygen rise in the tropical upper ocean during the Paleocene-Eocene Thermal Maximum, Science (2024).
Rapid City Journal
13 Jul 2024
Rapid City Journal
13 Jul 2024