Sentences with phrase «pliocene warm intervals»

This FLIP «fingerprint» was found to be restricted to the Pliocene warm intervals and was absent from the overlying younger sediments.

Not exact matches

DeConto and Pollard's study was motivated by reconstructions of sea level rise during past warm periods including the previous inter-glacial (around 125,000 years ago) and earlier warm intervals like the Pliocene (around 3 million years ago).

The new results, published in Nature Geoscience, contradict those previous studies and indicate that tropical sea surface temperatures were warmer during the early - to - mid Pliocene, an interval spanning about 5 to 3 million years ago.

Its key finding is that during the Pliocene there occurred a series of long, warm intervals during which parts of the East Antarctic Ice - Sheet margin retreated hundreds of kilometres inland.

The most recent interval in which sustained global temperatures exceeded those of today was during the Pliocene epoch (2.6 — 5.3 Ma), when global surface temperatures were between 2 and 3 °C warmer than present (Dowsett, 2007).

The Pliocene is a paradox when compared to other Cenozoic warm intervals because global mean temperatures were 2 — 3 °C warmer than present (Dowsett, 2007), despite levels of atmospheric CO2 that were only slightly higher than preindustrial levels (Fedorov et al., 2006).

During the warm intervals of the middle Pliocene (3.3 to 3.0 million years ago), when there is medium confidence that global mean surface temperatures were 2 °C to 3.5 °C warmer than for pre-industrial climate and CO2 levels were between 250 and 450 ppm, sedimentary records suggest periodic deglaciation of West Antarctica and parts of East Antarctica.