CMEMS-LSCE: a global, 0.25°, monthly reconstruction of the surface ocean carbonate system
Observation-based data reconstructions of global surface ocean carbonate system variables play an essential role in monitoring the recent status of ocean carbon uptake and ocean acidification, as well as their impacts on marine organisms and ecosystems. So far, ongoing efforts are directed towards e...
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ftdoajarticles:oai:doaj.org/article:0f1727e2584842e5bb1c90080fb9b8a5 2024-02-11T10:07:36+01:00 CMEMS-LSCE: a global, 0.25°, monthly reconstruction of the surface ocean carbonate system T.-T.-T. Chau M. Gehlen N. Metzl F. Chevallier 2024-01-01T00:00:00Z https://doi.org/10.5194/essd-16-121-2024 https://doaj.org/article/0f1727e2584842e5bb1c90080fb9b8a5 EN eng Copernicus Publications https://essd.copernicus.org/articles/16/121/2024/essd-16-121-2024.pdf https://doaj.org/toc/1866-3508 https://doaj.org/toc/1866-3516 doi:10.5194/essd-16-121-2024 1866-3508 1866-3516 https://doaj.org/article/0f1727e2584842e5bb1c90080fb9b8a5 Earth System Science Data, Vol 16, Pp 121-160 (2024) Environmental sciences GE1-350 Geology QE1-996.5 article 2024 ftdoajarticles https://doi.org/10.5194/essd-16-121-2024 2024-01-14T01:40:30Z Observation-based data reconstructions of global surface ocean carbonate system variables play an essential role in monitoring the recent status of ocean carbon uptake and ocean acidification, as well as their impacts on marine organisms and ecosystems. So far, ongoing efforts are directed towards exploring new approaches to describe the complete marine carbonate system and to better recover its fine-scale features. In this respect, our research activities within the Copernicus Marine Environment Monitoring Service (CMEMS) aim to develop a sustainable production chain of observation-derived global ocean carbonate system datasets at high space–time resolutions. As the start of the long-term objective, this study introduces a new global 0.25 ∘ monthly reconstruction, namely CMEMS-LSCE (Laboratoire des Sciences du Climat et de l'Environnement) for the period 1985–2021. The CMEMS-LSCE reconstruction derives datasets of six carbonate system variables, including surface ocean partial pressure of CO 2 ( p CO 2 ), total alkalinity ( A T ), total dissolved inorganic carbon ( C T ), surface ocean pH, and saturation states with respect to aragonite ( Ω ar ) and calcite ( Ω ca ). Reconstructing p CO 2 relies on an ensemble of neural network models mapping gridded observation-based data provided by the Surface Ocean CO 2 ATlas (SOCAT). Surface ocean A T is estimated with a multiple-linear-regression approach, and the remaining carbonate variables are resolved by CO 2 system speciation given the reconstructed p CO 2 and A T 1 σ uncertainty associated with these estimates is also provided. Here, σ stands for either the ensemble standard deviation of p CO 2 estimates or the total uncertainty for each of the five other variables propagated through the processing chain with input data uncertainty. We demonstrate that the 0.25 ∘ resolution p CO 2 product outperforms a coarser spatial resolution (1 ∘ ) thanks to higher data coverage nearshore and a better description of horizontal and temporal variations in p CO 2 across diverse ... Article in Journal/Newspaper Ocean acidification Directory of Open Access Journals: DOAJ Articles Earth System Science Data 16 1 121 160 |
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topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
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Environmental sciences GE1-350 Geology QE1-996.5 T.-T.-T. Chau M. Gehlen N. Metzl F. Chevallier CMEMS-LSCE: a global, 0.25°, monthly reconstruction of the surface ocean carbonate system |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
description |
Observation-based data reconstructions of global surface ocean carbonate system variables play an essential role in monitoring the recent status of ocean carbon uptake and ocean acidification, as well as their impacts on marine organisms and ecosystems. So far, ongoing efforts are directed towards exploring new approaches to describe the complete marine carbonate system and to better recover its fine-scale features. In this respect, our research activities within the Copernicus Marine Environment Monitoring Service (CMEMS) aim to develop a sustainable production chain of observation-derived global ocean carbonate system datasets at high space–time resolutions. As the start of the long-term objective, this study introduces a new global 0.25 ∘ monthly reconstruction, namely CMEMS-LSCE (Laboratoire des Sciences du Climat et de l'Environnement) for the period 1985–2021. The CMEMS-LSCE reconstruction derives datasets of six carbonate system variables, including surface ocean partial pressure of CO 2 ( p CO 2 ), total alkalinity ( A T ), total dissolved inorganic carbon ( C T ), surface ocean pH, and saturation states with respect to aragonite ( Ω ar ) and calcite ( Ω ca ). Reconstructing p CO 2 relies on an ensemble of neural network models mapping gridded observation-based data provided by the Surface Ocean CO 2 ATlas (SOCAT). Surface ocean A T is estimated with a multiple-linear-regression approach, and the remaining carbonate variables are resolved by CO 2 system speciation given the reconstructed p CO 2 and A T 1 σ uncertainty associated with these estimates is also provided. Here, σ stands for either the ensemble standard deviation of p CO 2 estimates or the total uncertainty for each of the five other variables propagated through the processing chain with input data uncertainty. We demonstrate that the 0.25 ∘ resolution p CO 2 product outperforms a coarser spatial resolution (1 ∘ ) thanks to higher data coverage nearshore and a better description of horizontal and temporal variations in p CO 2 across diverse ... |
format |
Article in Journal/Newspaper |
author |
T.-T.-T. Chau M. Gehlen N. Metzl F. Chevallier |
author_facet |
T.-T.-T. Chau M. Gehlen N. Metzl F. Chevallier |
author_sort |
T.-T.-T. Chau |
title |
CMEMS-LSCE: a global, 0.25°, monthly reconstruction of the surface ocean carbonate system |
title_short |
CMEMS-LSCE: a global, 0.25°, monthly reconstruction of the surface ocean carbonate system |
title_full |
CMEMS-LSCE: a global, 0.25°, monthly reconstruction of the surface ocean carbonate system |
title_fullStr |
CMEMS-LSCE: a global, 0.25°, monthly reconstruction of the surface ocean carbonate system |
title_full_unstemmed |
CMEMS-LSCE: a global, 0.25°, monthly reconstruction of the surface ocean carbonate system |
title_sort |
cmems-lsce: a global, 0.25°, monthly reconstruction of the surface ocean carbonate system |
publisher |
Copernicus Publications |
publishDate |
2024 |
url |
https://doi.org/10.5194/essd-16-121-2024 https://doaj.org/article/0f1727e2584842e5bb1c90080fb9b8a5 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Earth System Science Data, Vol 16, Pp 121-160 (2024) |
op_relation |
https://essd.copernicus.org/articles/16/121/2024/essd-16-121-2024.pdf https://doaj.org/toc/1866-3508 https://doaj.org/toc/1866-3516 doi:10.5194/essd-16-121-2024 1866-3508 1866-3516 https://doaj.org/article/0f1727e2584842e5bb1c90080fb9b8a5 |
op_doi |
https://doi.org/10.5194/essd-16-121-2024 |
container_title |
Earth System Science Data |
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16 |
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121 |
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160 |
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1790606227864027136 |