Exploring the coupled ocean and atmosphere system with a data science approach applied to observations from the Antarctic Circumnavigation Expedition
The Southern Ocean is a critical component of Earth's climate system, but its remoteness makes it challenging to develop a holistic understanding of its processes from the small scale to the large scale. As a result, our knowledge of this vast region remains largely incomplete. The Antarctic Ci...
Published in: | Earth System Dynamics |
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EGU: European Geophysical Union
2021
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Online Access: | https://doi.org/10.5194/esd-12-1295-2021 http://dspace.lib.cranfield.ac.uk/handle/1826/17322 |
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ftcranfield:oai:dspace.lib.cranfield.ac.uk:1826/17322 2024-05-19T07:30:06+00:00 Exploring the coupled ocean and atmosphere system with a data science approach applied to observations from the Antarctic Circumnavigation Expedition Landwehr, Sebastian Volpi, Michele Haumann, F. Alexander Robinson, Charlotte M. Thurnherr, Iris Ferracci, Valerio Baccarini, Andrea Thomas, Jenny Gorodetskaya, Irina Tatzelt, Christian Henning, Silvia Modini, Rob L. Forrer, Heather J. Lin, Yajuan Cassar, Nicolas Simó, Rafel Hassler, Christel Moallemi, Alireza Fawcett, Sarah E. Harris, Neil R. P. Airs, Ruth Derkani, Marzieh H. Alberello, Alberto Toffoli, Alessandro Chen, Gang Rodríguez-Ros, Pablo Zamanillo, Marina Cortés-Greus, Pau Xue, Lei Bolas, Conor G. Leonard, Katherine C. Perez-Cruz, Fernando Walton, David Schmale, Julia 2021-11-30 https://doi.org/10.5194/esd-12-1295-2021 http://dspace.lib.cranfield.ac.uk/handle/1826/17322 en eng EGU: European Geophysical Union Landwehr S, Volpi M, Haumann FA, et al., (2021) Exploring the coupled ocean and atmosphere system with a data science approach applied to observations from the Antarctic Circumnavigation Expedition. Earth System Dynamics, Volume 12, Issue 4, November 2021, pp. 1295-1369 0360-1269 https://doi.org/10.5194/esd-12-1295-2021 http://dspace.lib.cranfield.ac.uk/handle/1826/17322 Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ Article 2021 ftcranfield https://doi.org/10.5194/esd-12-1295-2021 2024-04-23T23:31:00Z The Southern Ocean is a critical component of Earth's climate system, but its remoteness makes it challenging to develop a holistic understanding of its processes from the small scale to the large scale. As a result, our knowledge of this vast region remains largely incomplete. The Antarctic Circumnavigation Expedition (ACE, austral summer 2016/2017) surveyed a large number of variables describing the state of the ocean and the atmosphere, the freshwater cycle, atmospheric chemistry, and ocean biogeochemistry and microbiology. This circumpolar cruise included visits to 12 remote islands, the marginal ice zone, and the Antarctic coast. Here, we use 111 of the observed variables to study the latitudinal gradients, seasonality, shorter-term variations, geographic setting of environmental processes, and interactions between them over the duration of 90 d. To reduce the dimensionality and complexity of the dataset and make the relations between variables interpretable we applied an unsupervised machine learning method, the sparse principal component analysis (sPCA), which describes environmental processes through 14 latent variables. To derive a robust statistical perspective on these processes and to estimate the uncertainty in the sPCA decomposition, we have developed a bootstrap approach. Our results provide a proof of concept that sPCA with uncertainty analysis is able to identify temporal patterns from diurnal to seasonal cycles, as well as geographical gradients and “hotspots” of interaction between environmental compartments. While confirming many well known processes, our analysis provides novel insights into the Southern Ocean water cycle (freshwater fluxes), trace gases (interplay between seasonality, sources, and sinks), and microbial communities (nutrient limitation and island mass effects at the largest scale ever reported). More specifically, we identify the important role of the oceanic circulations, frontal zones, and islands in shaping the nutrient availability that controls biological community ... Article in Journal/Newspaper Antarc* Antarctic Southern Ocean Cranfield University: Collection of E-Research - CERES Earth System Dynamics 12 4 1295 1369 |
institution |
Open Polar |
collection |
Cranfield University: Collection of E-Research - CERES |
op_collection_id |
ftcranfield |
language |
English |
description |
The Southern Ocean is a critical component of Earth's climate system, but its remoteness makes it challenging to develop a holistic understanding of its processes from the small scale to the large scale. As a result, our knowledge of this vast region remains largely incomplete. The Antarctic Circumnavigation Expedition (ACE, austral summer 2016/2017) surveyed a large number of variables describing the state of the ocean and the atmosphere, the freshwater cycle, atmospheric chemistry, and ocean biogeochemistry and microbiology. This circumpolar cruise included visits to 12 remote islands, the marginal ice zone, and the Antarctic coast. Here, we use 111 of the observed variables to study the latitudinal gradients, seasonality, shorter-term variations, geographic setting of environmental processes, and interactions between them over the duration of 90 d. To reduce the dimensionality and complexity of the dataset and make the relations between variables interpretable we applied an unsupervised machine learning method, the sparse principal component analysis (sPCA), which describes environmental processes through 14 latent variables. To derive a robust statistical perspective on these processes and to estimate the uncertainty in the sPCA decomposition, we have developed a bootstrap approach. Our results provide a proof of concept that sPCA with uncertainty analysis is able to identify temporal patterns from diurnal to seasonal cycles, as well as geographical gradients and “hotspots” of interaction between environmental compartments. While confirming many well known processes, our analysis provides novel insights into the Southern Ocean water cycle (freshwater fluxes), trace gases (interplay between seasonality, sources, and sinks), and microbial communities (nutrient limitation and island mass effects at the largest scale ever reported). More specifically, we identify the important role of the oceanic circulations, frontal zones, and islands in shaping the nutrient availability that controls biological community ... |
format |
Article in Journal/Newspaper |
author |
Landwehr, Sebastian Volpi, Michele Haumann, F. Alexander Robinson, Charlotte M. Thurnherr, Iris Ferracci, Valerio Baccarini, Andrea Thomas, Jenny Gorodetskaya, Irina Tatzelt, Christian Henning, Silvia Modini, Rob L. Forrer, Heather J. Lin, Yajuan Cassar, Nicolas Simó, Rafel Hassler, Christel Moallemi, Alireza Fawcett, Sarah E. Harris, Neil R. P. Airs, Ruth Derkani, Marzieh H. Alberello, Alberto Toffoli, Alessandro Chen, Gang Rodríguez-Ros, Pablo Zamanillo, Marina Cortés-Greus, Pau Xue, Lei Bolas, Conor G. Leonard, Katherine C. Perez-Cruz, Fernando Walton, David Schmale, Julia |
spellingShingle |
Landwehr, Sebastian Volpi, Michele Haumann, F. Alexander Robinson, Charlotte M. Thurnherr, Iris Ferracci, Valerio Baccarini, Andrea Thomas, Jenny Gorodetskaya, Irina Tatzelt, Christian Henning, Silvia Modini, Rob L. Forrer, Heather J. Lin, Yajuan Cassar, Nicolas Simó, Rafel Hassler, Christel Moallemi, Alireza Fawcett, Sarah E. Harris, Neil R. P. Airs, Ruth Derkani, Marzieh H. Alberello, Alberto Toffoli, Alessandro Chen, Gang Rodríguez-Ros, Pablo Zamanillo, Marina Cortés-Greus, Pau Xue, Lei Bolas, Conor G. Leonard, Katherine C. Perez-Cruz, Fernando Walton, David Schmale, Julia Exploring the coupled ocean and atmosphere system with a data science approach applied to observations from the Antarctic Circumnavigation Expedition |
author_facet |
Landwehr, Sebastian Volpi, Michele Haumann, F. Alexander Robinson, Charlotte M. Thurnherr, Iris Ferracci, Valerio Baccarini, Andrea Thomas, Jenny Gorodetskaya, Irina Tatzelt, Christian Henning, Silvia Modini, Rob L. Forrer, Heather J. Lin, Yajuan Cassar, Nicolas Simó, Rafel Hassler, Christel Moallemi, Alireza Fawcett, Sarah E. Harris, Neil R. P. Airs, Ruth Derkani, Marzieh H. Alberello, Alberto Toffoli, Alessandro Chen, Gang Rodríguez-Ros, Pablo Zamanillo, Marina Cortés-Greus, Pau Xue, Lei Bolas, Conor G. Leonard, Katherine C. Perez-Cruz, Fernando Walton, David Schmale, Julia |
author_sort |
Landwehr, Sebastian |
title |
Exploring the coupled ocean and atmosphere system with a data science approach applied to observations from the Antarctic Circumnavigation Expedition |
title_short |
Exploring the coupled ocean and atmosphere system with a data science approach applied to observations from the Antarctic Circumnavigation Expedition |
title_full |
Exploring the coupled ocean and atmosphere system with a data science approach applied to observations from the Antarctic Circumnavigation Expedition |
title_fullStr |
Exploring the coupled ocean and atmosphere system with a data science approach applied to observations from the Antarctic Circumnavigation Expedition |
title_full_unstemmed |
Exploring the coupled ocean and atmosphere system with a data science approach applied to observations from the Antarctic Circumnavigation Expedition |
title_sort |
exploring the coupled ocean and atmosphere system with a data science approach applied to observations from the antarctic circumnavigation expedition |
publisher |
EGU: European Geophysical Union |
publishDate |
2021 |
url |
https://doi.org/10.5194/esd-12-1295-2021 http://dspace.lib.cranfield.ac.uk/handle/1826/17322 |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_relation |
Landwehr S, Volpi M, Haumann FA, et al., (2021) Exploring the coupled ocean and atmosphere system with a data science approach applied to observations from the Antarctic Circumnavigation Expedition. Earth System Dynamics, Volume 12, Issue 4, November 2021, pp. 1295-1369 0360-1269 https://doi.org/10.5194/esd-12-1295-2021 http://dspace.lib.cranfield.ac.uk/handle/1826/17322 |
op_rights |
Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.5194/esd-12-1295-2021 |
container_title |
Earth System Dynamics |
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12 |
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4 |
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1295 |
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1799483717023956992 |