Stable oxygen isotope record and Mg/Ca ratios of the Pliocene warm period

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Main Authors: Wara, Michael W, Ravelo, Ana Christina, Delaney, Margaret Lois
Format: Dataset Open Access
Language:en
Published: PANGAEA 2005
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author Wara, Michael W
Ravelo, Ana Christina
Delaney, Margaret Lois
author_facet Wara, Michael W
Ravelo, Ana Christina
Delaney, Margaret Lois
collection Datos científicos de ciencias marinas y ambientales
contents During the warm early Pliocene (~4.5 to 3.0 million years ago), the most recent interval with a climate warmer than today, the eastern Pacific thermocline was deep and the average west-to-east sea surface temperature difference across the equatorial Pacific was only 1.5 ± 0.9°C, much like it is during a modern El Niño event. Thus, the modern strong sea surface temperature gradient across the equatorial Pacific is not a stable and permanent feature. Sustained El Niño-like conditions, including relatively weak zonal atmospheric (Walker) circulation, could be a consequence of, and play an important role in determining, global warmth.
format Dataset Open Access
id pangaea_https___doi_org_10_1594_PANGAEA_772021
institution PANGAEA
language en
publishDate 2005
publisher PANGAEA
record_format pangaea
spellingShingle Stable oxygen isotope record and Mg/Ca ratios of the Pliocene warm period
Wara, Michael W
Ravelo, Ana Christina
Delaney, Margaret Lois
130-806; 138-847; 138-847B; 138-847C; COMPCORE; Composite Core; DRILL; Drilling/drill rig; Joides Resolution; Leg130; Leg138; North Pacific Ocean; Ocean Drilling Program; ODP
During the warm early Pliocene (~4.5 to 3.0 million years ago), the most recent interval with a climate warmer than today, the eastern Pacific thermocline was deep and the average west-to-east sea surface temperature difference across the equatorial Pacific was only 1.5 ± 0.9°C, much like it is during a modern El Niño event. Thus, the modern strong sea surface temperature gradient across the equatorial Pacific is not a stable and permanent feature. Sustained El Niño-like conditions, including relatively weak zonal atmospheric (Walker) circulation, could be a consequence of, and play an important role in determining, global warmth.
title Stable oxygen isotope record and Mg/Ca ratios of the Pliocene warm period
topic 130-806; 138-847; 138-847B; 138-847C; COMPCORE; Composite Core; DRILL; Drilling/drill rig; Joides Resolution; Leg130; Leg138; North Pacific Ocean; Ocean Drilling Program; ODP
url https://doi.org/10.1594/PANGAEA.772021