The Early Eocene Climatic Optimum (EECO), also referred to as the Early Eocene Thermal Maximum (EETM), [1] was a period of extremely warm greenhouse climatic conditions during the Eocene epoch. The EECO represented the hottest sustained interval of the Cenozoic era and one of the hottest periods in all of Earth's history.

2015年11月1日 · The early Eocene climatic optimum, which constituted the peak of the long-term early Cenozoic global warming, had a significant impact on the environmental evolution of terrestrial and oceanic areas. Surprisingly, however, its …

2017年1月1日 · Here, we present a new high-resolution multiproxy record of terrestrial climatic and environmental conditions during the early Eocene climatic optimum from the Southern Hemisphere and compare this reconstruction to other marine and terrestrial records.

2024年8月8日 · The Early Eocene Climatic Optimum (EECO; ∼53 and 49 Ma) records the warmest long-term global average temperature and highest CO 2 levels of the Cenozoic. Multiple transient global warming events occur within the EECO, offering an opportunity to investigate the impact of extreme heat on planktic foraminifera.

2023年8月4日 · The Early Eocene Climatic Optimum [EECO; approximately 53.3 to 49.1 million years (Ma)] , Earth’s last greenhouse climate interval, is associated with the warmest sustained conditions of the Cenozoic, with global mean surface temperatures of ∼27°C .

2022年7月1日 · The Early Eocene, covering ∼56–48 million years before present (Ma), constitutes the warmest period in the Cenozoic, with the Early Eocene Climatic Optimum (EECO) ∼53–49 Ma representing a global long-term temperature maximum in the Cenozoic (Zachos et al., 2001, 2008; Westerhold et al., 2018).

2015年10月7日 · Recent studies have shown that the Early Eocene Climatic Optimum (EECO) was preceded by a series of short-lived global warming events, known as hyperthermals.

The Early Eocene was characterized by high carbon dioxide levels, inferred to be between 1,000 and 2,000 parts per million. Scientists think that increased volcanic activity was an important cause of these high levels of carbon dioxide. Temperatures during the Eocene can be reconstructed from geochemical measurements of ocean sediments and from ...

2025年2月4日 · The Early Eocene Climatic Optimum (EECO) represents a pinnacle of long-term global warming and is considered an analog for potential ecological impacts in a future high-CO2 world (atmospheric pCO2 >500 ppmv). Recent work from mid- to high-latitude lake‒marsh systems in the Northern Hemisphere suggests that the EECO was characterized by a ...

2015年5月25日 · The age of the Early Eocene Climatic Optimum. The term EECO first came to widespread attention when Zachos et al. (Citation 2001) showed that a composite benthic foraminifera stable isotope record displayed a broad 2–3 Myr long minimum in δ 18 O within the middle–latest early Eocene.