ELSEVIER Marine Micropaleontology 27 ( 1996) 3 13-326 Mid-Pliocene warmth: stronger greenhouse and stronger conveyor
Three million years ago, prior to the onset of northern hemisphere glaciation, global mean temperatures may have been as much as 3.X warmer than at present. We present evidence, based on the carbon isotopic composition of marine organic matter, that atmospheric CO2 levels at this time were on averag...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.570.7758 2023-05-15T17:31:51+02:00 ELSEVIER Marine Micropaleontology 27 ( 1996) 3 13-326 Mid-Pliocene warmth: stronger greenhouse and stronger conveyor M. E. Raymo A B. Grant A M. Horowitz A G. H. Rau B*c The Pennsylvania State University CiteSeerX Archives 1994 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.570.7758 http://www.moraymo.us/1996_Raymoetal.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.570.7758 http://www.moraymo.us/1996_Raymoetal.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.moraymo.us/1996_Raymoetal.pdf text 1994 ftciteseerx 2016-01-08T12:31:11Z Three million years ago, prior to the onset of northern hemisphere glaciation, global mean temperatures may have been as much as 3.X warmer than at present. We present evidence, based on the carbon isotopic composition of marine organic matter, that atmospheric CO2 levels at this time were on average only about 35 % higher than the preindustrial value of 280 ppm. We also present carbon isotopic evidence for stronger thermohaline circulation in the Atlantic Ocean during the warmest intervals and propose that the North Atlantic “conveyor belt ” may act as a positive feedback to global warming by enhancing sea ice retreat and decreasing high latitude albedo. Based on our results, it seems unlikely that the mid Pliocene warm period was a doubled CO, world. 1. Text North Atlantic Sea ice Unknown |
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English |
description |
Three million years ago, prior to the onset of northern hemisphere glaciation, global mean temperatures may have been as much as 3.X warmer than at present. We present evidence, based on the carbon isotopic composition of marine organic matter, that atmospheric CO2 levels at this time were on average only about 35 % higher than the preindustrial value of 280 ppm. We also present carbon isotopic evidence for stronger thermohaline circulation in the Atlantic Ocean during the warmest intervals and propose that the North Atlantic “conveyor belt ” may act as a positive feedback to global warming by enhancing sea ice retreat and decreasing high latitude albedo. Based on our results, it seems unlikely that the mid Pliocene warm period was a doubled CO, world. 1. |
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The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
M. E. Raymo A B. Grant A M. Horowitz A G. H. Rau B*c |
spellingShingle |
M. E. Raymo A B. Grant A M. Horowitz A G. H. Rau B*c ELSEVIER Marine Micropaleontology 27 ( 1996) 3 13-326 Mid-Pliocene warmth: stronger greenhouse and stronger conveyor |
author_facet |
M. E. Raymo A B. Grant A M. Horowitz A G. H. Rau B*c |
author_sort |
M. E. Raymo A |
title |
ELSEVIER Marine Micropaleontology 27 ( 1996) 3 13-326 Mid-Pliocene warmth: stronger greenhouse and stronger conveyor |
title_short |
ELSEVIER Marine Micropaleontology 27 ( 1996) 3 13-326 Mid-Pliocene warmth: stronger greenhouse and stronger conveyor |
title_full |
ELSEVIER Marine Micropaleontology 27 ( 1996) 3 13-326 Mid-Pliocene warmth: stronger greenhouse and stronger conveyor |
title_fullStr |
ELSEVIER Marine Micropaleontology 27 ( 1996) 3 13-326 Mid-Pliocene warmth: stronger greenhouse and stronger conveyor |
title_full_unstemmed |
ELSEVIER Marine Micropaleontology 27 ( 1996) 3 13-326 Mid-Pliocene warmth: stronger greenhouse and stronger conveyor |
title_sort |
elsevier marine micropaleontology 27 ( 1996) 3 13-326 mid-pliocene warmth: stronger greenhouse and stronger conveyor |
publishDate |
1994 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.570.7758 http://www.moraymo.us/1996_Raymoetal.pdf |
genre |
North Atlantic Sea ice |
genre_facet |
North Atlantic Sea ice |
op_source |
http://www.moraymo.us/1996_Raymoetal.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.570.7758 http://www.moraymo.us/1996_Raymoetal.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766129659263582208 |