Isotope and elemental data for: Dynamic storage of glacial CO2 in the Atlantic Ocean revealed by boron [CO32-] and pH records, supplement to: Chalk, Thomas B; Foster, Gavin L; Wilson, Paul A (2019): Dynamic storage of glacial CO2 in the Atlantic Ocean revealed by boron [CO32-] and pH records. Earth and Planetary Science Letters, 510, 1-11
The origin and carbon content of the deep water mass that fills the North Atlantic Basin, either Antarctic Bottom Water (AABW) or North Atlantic Deep Water (NADW) is suggested to influence the partitioning of CO2 between the ocean and atmosphere on glacial-interglacial timescales. Fluctuations in th...
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ftdatacite:10.1594/pangaea.898088 2023-05-15T13:59:32+02:00 Isotope and elemental data for: Dynamic storage of glacial CO2 in the Atlantic Ocean revealed by boron [CO32-] and pH records, supplement to: Chalk, Thomas B; Foster, Gavin L; Wilson, Paul A (2019): Dynamic storage of glacial CO2 in the Atlantic Ocean revealed by boron [CO32-] and pH records. Earth and Planetary Science Letters, 510, 1-11 Chalk, Thomas B Foster, Gavin L Wilson, Paul A 2019 application/zip https://dx.doi.org/10.1594/pangaea.898088 https://doi.pangaea.de/10.1594/PANGAEA.898088 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1016/j.epsl.2018.12.022 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY boron boron isotopes Carbonate carbonate ion LGM North Atlantic Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Ocean Drilling Program ODP article Supplementary Collection of Datasets Collection 2019 ftdatacite https://doi.org/10.1594/pangaea.898088 https://doi.org/10.1016/j.epsl.2018.12.022 2022-03-10T11:43:05Z The origin and carbon content of the deep water mass that fills the North Atlantic Basin, either Antarctic Bottom Water (AABW) or North Atlantic Deep Water (NADW) is suggested to influence the partitioning of CO2 between the ocean and atmosphere on glacial-interglacial timescales. Fluctuations in the strength of Atlantic meridional overturning circulation (AMOC) have also been shown to play a key role in global and regional climate change on timescales from annual to millennial. The North Atlantic is an important and well-studied ocean basin but many proxy records tracing ocean circulation in this region over the last glacial cycle are challenging to interpret. Here we present new B/Ca-[CO32-] and boron isotope-pH data from sites spanning the North Atlantic Ocean from 2200 to 3900 m and covering the last 130 kyr from both sides of the Mid-Atlantic Ridge. These data allow us to explore the potential of the boron-based proxies as tracers of ocean water masses to ultimately identify the changing nature of Atlantic circulation over the last 130 kyr. This possibility arises because the B/Ca and boron isotope proxies are directly and quantitatively linked to the ocean carbonate system acting as semi-conservative tracers in the modern ocean. Yet the utility of this approach has yet to be demonstrated on glacial-interglacial timescales when various processes may alter the state of the deep ocean carbonate system. We demonstrate that the deep (∼3400 m) North Atlantic Ocean exhibits considerable variability in terms of its carbonate chemistry through the entirety of the last glacial cycle. Our new data confirm that the last interglacial marine isotope stage (MIS) 5e has a similar deep-water geometry to the Holocene, in terms of the carbonate system. In combination with benthic foraminiferal δ13C and a consideration of the [CO32-] of contemporaneous southern sourced water, we infer that AABW influences the eastern abyssal North Atlantic throughout the whole of the last glacial (MIS2 through 4) whereas, only in the coldest stages (MIS2 and MIS4) of the last glacial cycle was AABW an important contributor to our deep sites in both North Atlantic basins. Taken together, our carbonate system depth profiles reveal a pattern of changing stratification within the North Atlantic that bears strong similarities to the atmospheric CO2 record, evidencing the important role played by ocean water mass geometry and the deep ocean carbonate system in driving changes in atmospheric CO2 on these timescales. Article in Journal/Newspaper Antarc* Antarctic NADW North Atlantic Deep Water North Atlantic DataCite Metadata Store (German National Library of Science and Technology) Antarctic Mid-Atlantic Ridge |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
boron boron isotopes Carbonate carbonate ion LGM North Atlantic Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Ocean Drilling Program ODP |
spellingShingle |
boron boron isotopes Carbonate carbonate ion LGM North Atlantic Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Ocean Drilling Program ODP Chalk, Thomas B Foster, Gavin L Wilson, Paul A Isotope and elemental data for: Dynamic storage of glacial CO2 in the Atlantic Ocean revealed by boron [CO32-] and pH records, supplement to: Chalk, Thomas B; Foster, Gavin L; Wilson, Paul A (2019): Dynamic storage of glacial CO2 in the Atlantic Ocean revealed by boron [CO32-] and pH records. Earth and Planetary Science Letters, 510, 1-11 |
topic_facet |
boron boron isotopes Carbonate carbonate ion LGM North Atlantic Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Ocean Drilling Program ODP |
description |
The origin and carbon content of the deep water mass that fills the North Atlantic Basin, either Antarctic Bottom Water (AABW) or North Atlantic Deep Water (NADW) is suggested to influence the partitioning of CO2 between the ocean and atmosphere on glacial-interglacial timescales. Fluctuations in the strength of Atlantic meridional overturning circulation (AMOC) have also been shown to play a key role in global and regional climate change on timescales from annual to millennial. The North Atlantic is an important and well-studied ocean basin but many proxy records tracing ocean circulation in this region over the last glacial cycle are challenging to interpret. Here we present new B/Ca-[CO32-] and boron isotope-pH data from sites spanning the North Atlantic Ocean from 2200 to 3900 m and covering the last 130 kyr from both sides of the Mid-Atlantic Ridge. These data allow us to explore the potential of the boron-based proxies as tracers of ocean water masses to ultimately identify the changing nature of Atlantic circulation over the last 130 kyr. This possibility arises because the B/Ca and boron isotope proxies are directly and quantitatively linked to the ocean carbonate system acting as semi-conservative tracers in the modern ocean. Yet the utility of this approach has yet to be demonstrated on glacial-interglacial timescales when various processes may alter the state of the deep ocean carbonate system. We demonstrate that the deep (∼3400 m) North Atlantic Ocean exhibits considerable variability in terms of its carbonate chemistry through the entirety of the last glacial cycle. Our new data confirm that the last interglacial marine isotope stage (MIS) 5e has a similar deep-water geometry to the Holocene, in terms of the carbonate system. In combination with benthic foraminiferal δ13C and a consideration of the [CO32-] of contemporaneous southern sourced water, we infer that AABW influences the eastern abyssal North Atlantic throughout the whole of the last glacial (MIS2 through 4) whereas, only in the coldest stages (MIS2 and MIS4) of the last glacial cycle was AABW an important contributor to our deep sites in both North Atlantic basins. Taken together, our carbonate system depth profiles reveal a pattern of changing stratification within the North Atlantic that bears strong similarities to the atmospheric CO2 record, evidencing the important role played by ocean water mass geometry and the deep ocean carbonate system in driving changes in atmospheric CO2 on these timescales. |
format |
Article in Journal/Newspaper |
author |
Chalk, Thomas B Foster, Gavin L Wilson, Paul A |
author_facet |
Chalk, Thomas B Foster, Gavin L Wilson, Paul A |
author_sort |
Chalk, Thomas B |
title |
Isotope and elemental data for: Dynamic storage of glacial CO2 in the Atlantic Ocean revealed by boron [CO32-] and pH records, supplement to: Chalk, Thomas B; Foster, Gavin L; Wilson, Paul A (2019): Dynamic storage of glacial CO2 in the Atlantic Ocean revealed by boron [CO32-] and pH records. Earth and Planetary Science Letters, 510, 1-11 |
title_short |
Isotope and elemental data for: Dynamic storage of glacial CO2 in the Atlantic Ocean revealed by boron [CO32-] and pH records, supplement to: Chalk, Thomas B; Foster, Gavin L; Wilson, Paul A (2019): Dynamic storage of glacial CO2 in the Atlantic Ocean revealed by boron [CO32-] and pH records. Earth and Planetary Science Letters, 510, 1-11 |
title_full |
Isotope and elemental data for: Dynamic storage of glacial CO2 in the Atlantic Ocean revealed by boron [CO32-] and pH records, supplement to: Chalk, Thomas B; Foster, Gavin L; Wilson, Paul A (2019): Dynamic storage of glacial CO2 in the Atlantic Ocean revealed by boron [CO32-] and pH records. Earth and Planetary Science Letters, 510, 1-11 |
title_fullStr |
Isotope and elemental data for: Dynamic storage of glacial CO2 in the Atlantic Ocean revealed by boron [CO32-] and pH records, supplement to: Chalk, Thomas B; Foster, Gavin L; Wilson, Paul A (2019): Dynamic storage of glacial CO2 in the Atlantic Ocean revealed by boron [CO32-] and pH records. Earth and Planetary Science Letters, 510, 1-11 |
title_full_unstemmed |
Isotope and elemental data for: Dynamic storage of glacial CO2 in the Atlantic Ocean revealed by boron [CO32-] and pH records, supplement to: Chalk, Thomas B; Foster, Gavin L; Wilson, Paul A (2019): Dynamic storage of glacial CO2 in the Atlantic Ocean revealed by boron [CO32-] and pH records. Earth and Planetary Science Letters, 510, 1-11 |
title_sort |
isotope and elemental data for: dynamic storage of glacial co2 in the atlantic ocean revealed by boron [co32-] and ph records, supplement to: chalk, thomas b; foster, gavin l; wilson, paul a (2019): dynamic storage of glacial co2 in the atlantic ocean revealed by boron [co32-] and ph records. earth and planetary science letters, 510, 1-11 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2019 |
url |
https://dx.doi.org/10.1594/pangaea.898088 https://doi.pangaea.de/10.1594/PANGAEA.898088 |
geographic |
Antarctic Mid-Atlantic Ridge |
geographic_facet |
Antarctic Mid-Atlantic Ridge |
genre |
Antarc* Antarctic NADW North Atlantic Deep Water North Atlantic |
genre_facet |
Antarc* Antarctic NADW North Atlantic Deep Water North Atlantic |
op_relation |
https://dx.doi.org/10.1016/j.epsl.2018.12.022 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.898088 https://doi.org/10.1016/j.epsl.2018.12.022 |
_version_ |
1766268124839018496 |