Controls on open ocean North Atlantic ΔpCO2 at seasonal and interannual timescales 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 in si...
Published in: | Geophysical Research Letters |
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2018
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Online Access: | https://pure.uhi.ac.uk/en/publications/9cc6fafa-f30b-404b-ad9f-510ddac95677 https://doi.org/10.1029/2018GL078797 https://pureadmin.uhi.ac.uk/ws/files/3259504/831855_1_merged_1531833829.pdf https://pureadmin.uhi.ac.uk/ws/files/3328275/2018_Henson_et_al_GRL.pdf https://pureadmin.uhi.ac.uk/ws/files/3299323/2018_Henson_et_al_GRL_EOL.pdf |
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ftuhipublicatio:oai:pure.atira.dk:publications/9cc6fafa-f30b-404b-ad9f-510ddac95677 2024-04-28T08:29:24+00:00 Controls on open ocean North Atlantic ΔpCO2 at seasonal and interannual timescales are different Henson, Stephanie Humphreys, Matt Land, Peter E. Shutler, Jamie D. Goddijn-Murphy, Lonneke Warren, Mark 2018-09-06 application/pdf https://pure.uhi.ac.uk/en/publications/9cc6fafa-f30b-404b-ad9f-510ddac95677 https://doi.org/10.1029/2018GL078797 https://pureadmin.uhi.ac.uk/ws/files/3259504/831855_1_merged_1531833829.pdf https://pureadmin.uhi.ac.uk/ws/files/3328275/2018_Henson_et_al_GRL.pdf https://pureadmin.uhi.ac.uk/ws/files/3299323/2018_Henson_et_al_GRL_EOL.pdf eng eng info:eu-repo/semantics/openAccess Henson , S , Humphreys , M , Land , P E , Shutler , J D , Goddijn-Murphy , L & Warren , M 2018 , ' Controls on open ocean North Atlantic ΔpCO2 at seasonal and interannual timescales are different ' , Geophysical Research Letters , vol. 45 , no. 17 , pp. 9067–9076 . https://doi.org/10.1029/2018GL078797 article 2018 ftuhipublicatio https://doi.org/10.1029/2018GL078797 2024-04-04T17:16:02Z 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 non-biological) that affect the sea-air CO2 difference (ΔpCO2) on seasonal and interannual timescales. We demonstrate that, on seasonal timescales, 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 timescales. 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 timescales. Article in Journal/Newspaper North Atlantic University of the Highlands and Islands: Research Database of UHI Geophysical Research Letters 45 17 9067 9076 |
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Open Polar |
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University of the Highlands and Islands: Research Database of UHI |
op_collection_id |
ftuhipublicatio |
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 non-biological) that affect the sea-air CO2 difference (ΔpCO2) on seasonal and interannual timescales. We demonstrate that, on seasonal timescales, 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 timescales. 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 timescales. |
format |
Article in Journal/Newspaper |
author |
Henson, Stephanie Humphreys, Matt Land, Peter E. Shutler, Jamie D. Goddijn-Murphy, Lonneke Warren, Mark |
spellingShingle |
Henson, Stephanie Humphreys, Matt Land, Peter E. Shutler, Jamie D. Goddijn-Murphy, Lonneke Warren, Mark Controls on open ocean North Atlantic ΔpCO2 at seasonal and interannual timescales are different |
author_facet |
Henson, Stephanie Humphreys, Matt Land, Peter E. Shutler, Jamie D. Goddijn-Murphy, Lonneke Warren, Mark |
author_sort |
Henson, Stephanie |
title |
Controls on open ocean North Atlantic ΔpCO2 at seasonal and interannual timescales are different |
title_short |
Controls on open ocean North Atlantic ΔpCO2 at seasonal and interannual timescales are different |
title_full |
Controls on open ocean North Atlantic ΔpCO2 at seasonal and interannual timescales are different |
title_fullStr |
Controls on open ocean North Atlantic ΔpCO2 at seasonal and interannual timescales are different |
title_full_unstemmed |
Controls on open ocean North Atlantic ΔpCO2 at seasonal and interannual timescales are different |
title_sort |
controls on open ocean north atlantic δpco2 at seasonal and interannual timescales are different |
publishDate |
2018 |
url |
https://pure.uhi.ac.uk/en/publications/9cc6fafa-f30b-404b-ad9f-510ddac95677 https://doi.org/10.1029/2018GL078797 https://pureadmin.uhi.ac.uk/ws/files/3259504/831855_1_merged_1531833829.pdf https://pureadmin.uhi.ac.uk/ws/files/3328275/2018_Henson_et_al_GRL.pdf https://pureadmin.uhi.ac.uk/ws/files/3299323/2018_Henson_et_al_GRL_EOL.pdf |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Henson , S , Humphreys , M , Land , P E , Shutler , J D , Goddijn-Murphy , L & Warren , M 2018 , ' Controls on open ocean North Atlantic ΔpCO2 at seasonal and interannual timescales are different ' , Geophysical Research Letters , vol. 45 , no. 17 , pp. 9067–9076 . https://doi.org/10.1029/2018GL078797 |
op_rights |
info:eu-repo/semantics/openAccess |
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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1797587627172429824 |