Algal constraints on the Cenozoic history of atmospheric CO2?
An urgent question for future climate, in light of increased burning of fossil fuels, is the temperature sensitivity of the climate system to atmospheric carbon dioxide (pCO2). To date, no direct proxy for past levels of pCO2 exists beyond the reach of the polar ice core records. We propose a new me...
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2016
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ftuloxford:oai:ora.ox.ac.uk:uuid:e3cdb254-1b2e-4371-ac27-c844cedc3d75 2023-05-15T16:39:02+02:00 Algal constraints on the Cenozoic history of atmospheric CO2? Henderiks, J Rickaby, R Union, European Geosciences 2016-07-28 https://ora.ox.ac.uk/objects/uuid:e3cdb254-1b2e-4371-ac27-c844cedc3d75 eng eng Copernicus Publications https://ora.ox.ac.uk/objects/uuid:e3cdb254-1b2e-4371-ac27-c844cedc3d75 info:eu-repo/semantics/openAccess CC Attribution-NonCommercial-ShareAlike (CC BY-NC-SA) CC-BY-NC-SA Earth sciences Journal article 2016 ftuloxford 2022-06-28T20:26:22Z An urgent question for future climate, in light of increased burning of fossil fuels, is the temperature sensitivity of the climate system to atmospheric carbon dioxide (pCO2). To date, no direct proxy for past levels of pCO2 exists beyond the reach of the polar ice core records. We propose a new methodology for placing an upper constraint on pCO2 over the Cenozoic based on the living geological record. Specifically, our premise is that the contrasting calcification tolerance of various extant species of coccolithophore to raised pCO2 reflects an “evolutionary memory” of past atmospheric composition. The different times of first emergence of each morphospecies allows an upper constraint of past pCO2 to be placed on Cenozoic timeslices. Further, our hypothesis has implications for the response of marine calcifiers to ocean acidification. Geologically “ancient” species, which have survived large changes in ocean chemistry, are likely more resilient to predicted acidification. Article in Journal/Newspaper ice core Ocean acidification ORA - Oxford University Research Archive |
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Open Polar |
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ORA - Oxford University Research Archive |
op_collection_id |
ftuloxford |
language |
English |
topic |
Earth sciences |
spellingShingle |
Earth sciences Henderiks, J Rickaby, R Algal constraints on the Cenozoic history of atmospheric CO2? |
topic_facet |
Earth sciences |
description |
An urgent question for future climate, in light of increased burning of fossil fuels, is the temperature sensitivity of the climate system to atmospheric carbon dioxide (pCO2). To date, no direct proxy for past levels of pCO2 exists beyond the reach of the polar ice core records. We propose a new methodology for placing an upper constraint on pCO2 over the Cenozoic based on the living geological record. Specifically, our premise is that the contrasting calcification tolerance of various extant species of coccolithophore to raised pCO2 reflects an “evolutionary memory” of past atmospheric composition. The different times of first emergence of each morphospecies allows an upper constraint of past pCO2 to be placed on Cenozoic timeslices. Further, our hypothesis has implications for the response of marine calcifiers to ocean acidification. Geologically “ancient” species, which have survived large changes in ocean chemistry, are likely more resilient to predicted acidification. |
author2 |
Union, European Geosciences |
format |
Article in Journal/Newspaper |
author |
Henderiks, J Rickaby, R |
author_facet |
Henderiks, J Rickaby, R |
author_sort |
Henderiks, J |
title |
Algal constraints on the Cenozoic history of atmospheric CO2? |
title_short |
Algal constraints on the Cenozoic history of atmospheric CO2? |
title_full |
Algal constraints on the Cenozoic history of atmospheric CO2? |
title_fullStr |
Algal constraints on the Cenozoic history of atmospheric CO2? |
title_full_unstemmed |
Algal constraints on the Cenozoic history of atmospheric CO2? |
title_sort |
algal constraints on the cenozoic history of atmospheric co2? |
publisher |
Copernicus Publications |
publishDate |
2016 |
url |
https://ora.ox.ac.uk/objects/uuid:e3cdb254-1b2e-4371-ac27-c844cedc3d75 |
genre |
ice core Ocean acidification |
genre_facet |
ice core Ocean acidification |
op_relation |
https://ora.ox.ac.uk/objects/uuid:e3cdb254-1b2e-4371-ac27-c844cedc3d75 |
op_rights |
info:eu-repo/semantics/openAccess CC Attribution-NonCommercial-ShareAlike (CC BY-NC-SA) |
op_rightsnorm |
CC-BY-NC-SA |
_version_ |
1766029397109768192 |