The Paleocene–Eocene thermal maximum (PETM), alternatively ”Eocene thermal maximum 1 (ETM1)“ and formerly known as the "Initial Eocene" or “Late Paleocene thermal maximum", was a geologically brief time interval characterized by a 5–8 °C global average temperature rise and massive input of carbon into the ocean and atmosphere.

Paleocene-Eocene Thermal Maximum (PETM), a short interval of maximum temperature lasting approximately 100,000 years during the late Paleocene and early Eocene epochs (roughly 55 million years ago). The interval was characterized by the highest global temperatures of the Cenozoic Era (65 million

The Paleocene-Eocene Thermal Maximum (PETM) at 56 million years before present is arguably the best ancient analog of modern climate change.

Nov 22, 2023 · Another hothouse period was the Paleocene-Eocene Thermal Maximum (PETM) about 55-56 million years ago. Though not quite as hot as the Cretaceous hothouse, the PETM brought rapidly rising temperatures. During much of the Paleocene and early Eocene, the poles were free of ice caps, and palm trees and crocodiles lived above the Arctic Circle.

Nov 13, 2017 · Around 56 million years ago, Earth’s temperatures spiked. That period of time is known as the Paleocene-Eocene Thermal Maximum, or PETM for short. It was one of the warmest periods in Earth history. Global temperatures likely rose by 9 to 14°F (5 to 8°C) for thousands of years.

Sep 19, 2014 · The Paleocene-Eocene Thermal Maximum (PETM), ∼55.53 million years before present, was an abrupt warming event that involved profound changes in the carbon cycle and led to major perturbations of marine and terrestrial ecosystems.

The Paleocene-Eocene Thermal Maximum (PETM) that occurred then was an extreme warm period in Earth’s history. On geologic time scales, the onset of the event was extremely rapid (Figure 1).

During the Paleocene-Eocene Thermal Maximum (PETM), 56 Mya, thousands of petagrams of carbon were released into the ocean-atmosphere system with attendant changes in the carbon cycle, climate, ocean chem-istry, and marine and continental ecosystems.

Some authors have since referred to it as the Initial Eocene Thermal Maximum (IETM). The CIE is contemporaneous with the Clarkforkian/Wasatchian transition, long accepted as the Paleocene-Eocene boundary in the North American Land Mammal Series.

Dec 4, 2012 · What was the Paleocene like? \Subtropical and moist" throughout North America and Europe. Thick tropical and deciduous forests covering most of Earth Coniferous forests near the poles 3