Controls on open-coean North Atlantic ΔpCO2 at seasonal and interannual time scales are different
The North Atlantic is a substantial sink for anthropogenic CO2. Understanding the mechanisms driving the sink's variability is key to assessing its current state and predicting its potential response to global climate change. Here we apply a time series decomposition technique to satellite and...
Published in: | Geophysical Research Letters |
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Language: | English |
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2018
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Online Access: | https://ueaeprints.uea.ac.uk/id/eprint/68334/ https://ueaeprints.uea.ac.uk/id/eprint/68334/1/Published_manuscript.pdf https://doi.org/10.1029/2018GL078797 |
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ftuniveastangl:oai:ueaeprints.uea.ac.uk:68334 2023-05-15T17:26:19+02:00 Controls on open-coean North Atlantic ΔpCO2 at seasonal and interannual time scales are different Henson, Stephanie A. Humphreys, Matthew P. Land, Peter E. Shutler, Jamie D. Goddijn-Murphy, Lonneke Warren, Mark 2018-09-16 application/pdf https://ueaeprints.uea.ac.uk/id/eprint/68334/ https://ueaeprints.uea.ac.uk/id/eprint/68334/1/Published_manuscript.pdf https://doi.org/10.1029/2018GL078797 en eng https://ueaeprints.uea.ac.uk/id/eprint/68334/1/Published_manuscript.pdf Henson, Stephanie A., Humphreys, Matthew P., Land, Peter E., Shutler, Jamie D., Goddijn-Murphy, Lonneke and Warren, Mark (2018) Controls on open-coean North Atlantic ΔpCO2 at seasonal and interannual time scales are different. Geophysical Research Letters, 45 (17). pp. 9067-9076. ISSN 0094-8276 doi:10.1029/2018GL078797 cc_by CC-BY Article PeerReviewed 2018 ftuniveastangl https://doi.org/10.1029/2018GL078797 2023-01-30T21:49:00Z The North Atlantic is a substantial sink for anthropogenic CO2. Understanding the mechanisms driving the sink's variability is key to assessing its current state and predicting its potential response to global climate change. Here we apply a time series decomposition technique to satellite and in situ data to examine separately the factors (both biological and nonbiological) that affect the sea‐air CO2 difference (ΔpCO2) on seasonal and interannual time scales. We demonstrate that on seasonal time scales, the subpolar North Atlantic ΔpCO2 signal is predominantly correlated with biological processes, whereas seawater temperature dominates in the subtropics. However, the same factors do not necessarily control ΔpCO2 on interannual time scales. Our results imply that the mechanisms driving seasonal variability in ΔpCO2 cannot necessarily be extrapolated to predict how ΔpCO2, and thus the North Atlantic CO2 sink, may respond to increases in anthropogenic CO2 over longer time scales. Article in Journal/Newspaper North Atlantic University of East Anglia: UEA Digital Repository Geophysical Research Letters 45 17 9067 9076 |
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Open Polar |
collection |
University of East Anglia: UEA Digital Repository |
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ftuniveastangl |
language |
English |
description |
The North Atlantic is a substantial sink for anthropogenic CO2. Understanding the mechanisms driving the sink's variability is key to assessing its current state and predicting its potential response to global climate change. Here we apply a time series decomposition technique to satellite and in situ data to examine separately the factors (both biological and nonbiological) that affect the sea‐air CO2 difference (ΔpCO2) on seasonal and interannual time scales. We demonstrate that on seasonal time scales, the subpolar North Atlantic ΔpCO2 signal is predominantly correlated with biological processes, whereas seawater temperature dominates in the subtropics. However, the same factors do not necessarily control ΔpCO2 on interannual time scales. Our results imply that the mechanisms driving seasonal variability in ΔpCO2 cannot necessarily be extrapolated to predict how ΔpCO2, and thus the North Atlantic CO2 sink, may respond to increases in anthropogenic CO2 over longer time scales. |
format |
Article in Journal/Newspaper |
author |
Henson, Stephanie A. Humphreys, Matthew P. Land, Peter E. Shutler, Jamie D. Goddijn-Murphy, Lonneke Warren, Mark |
spellingShingle |
Henson, Stephanie A. Humphreys, Matthew P. Land, Peter E. Shutler, Jamie D. Goddijn-Murphy, Lonneke Warren, Mark Controls on open-coean North Atlantic ΔpCO2 at seasonal and interannual time scales are different |
author_facet |
Henson, Stephanie A. Humphreys, Matthew P. Land, Peter E. Shutler, Jamie D. Goddijn-Murphy, Lonneke Warren, Mark |
author_sort |
Henson, Stephanie A. |
title |
Controls on open-coean North Atlantic ΔpCO2 at seasonal and interannual time scales are different |
title_short |
Controls on open-coean North Atlantic ΔpCO2 at seasonal and interannual time scales are different |
title_full |
Controls on open-coean North Atlantic ΔpCO2 at seasonal and interannual time scales are different |
title_fullStr |
Controls on open-coean North Atlantic ΔpCO2 at seasonal and interannual time scales are different |
title_full_unstemmed |
Controls on open-coean North Atlantic ΔpCO2 at seasonal and interannual time scales are different |
title_sort |
controls on open-coean north atlantic δpco2 at seasonal and interannual time scales are different |
publishDate |
2018 |
url |
https://ueaeprints.uea.ac.uk/id/eprint/68334/ https://ueaeprints.uea.ac.uk/id/eprint/68334/1/Published_manuscript.pdf https://doi.org/10.1029/2018GL078797 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://ueaeprints.uea.ac.uk/id/eprint/68334/1/Published_manuscript.pdf Henson, Stephanie A., Humphreys, Matthew P., Land, Peter E., Shutler, Jamie D., Goddijn-Murphy, Lonneke and Warren, Mark (2018) Controls on open-coean North Atlantic ΔpCO2 at seasonal and interannual time scales are different. Geophysical Research Letters, 45 (17). pp. 9067-9076. ISSN 0094-8276 doi:10.1029/2018GL078797 |
op_rights |
cc_by |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1029/2018GL078797 |
container_title |
Geophysical Research Letters |
container_volume |
45 |
container_issue |
17 |
container_start_page |
9067 |
op_container_end_page |
9076 |
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1766117944399495168 |