Mapping the fugacity of CO2 in the Nordic Seas and the northern North Atlantic Ocean
Self organizing maps (SOMs) have been used to estimate seawater fugacity of CO2 (fCO2) distribution in the Nordic Seas and the northern North Atlantic Ocean for 2005-2007. Four maps were produced for each region using various combinations of the parameters MLD, SST, CHL and SSS to train the SOM. The...
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The University of Bergen
2013
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ftunivbergen:oai:bora.uib.no:1956/7690 2023-05-15T16:29:46+02:00 Mapping the fugacity of CO2 in the Nordic Seas and the northern North Atlantic Ocean Kvæstad, Elise 2013-12-20 13326149 bytes application/pdf https://hdl.handle.net/1956/7690 nob nob The University of Bergen https://hdl.handle.net/1956/7690 Copyright the author. All rights reserved Self organizing map 756213 Master thesis 2013 ftunivbergen 2023-03-14T17:40:53Z Self organizing maps (SOMs) have been used to estimate seawater fugacity of CO2 (fCO2) distribution in the Nordic Seas and the northern North Atlantic Ocean for 2005-2007. Four maps were produced for each region using various combinations of the parameters MLD, SST, CHL and SSS to train the SOM. The combination of MLD+SST gave the most realistic fCO2 map for all the basins, which was surprising as one would expect that more input parameters would generate more realistic maps. SOMs were estimated in the northern North Atlantic Ocean and the Nordic Seas, the northern North Atlantic Ocean, and the Nordic Seas. The SOMs for the Nordic Seas were also merged with the SOMs for the northern North Atlantic Ocean, which generated better results than the SOM for the whole study area. The merged SOMs had minimal issues with discontinuity. All the SOMs generated incorrect fCO2 values for the deepest mixed layer depths in the Greenland Sea. A theory is that this may be the result of an artifact in the training dataset. This illustrate the importance of having a broad data coverage when using the SOM technique. The most optimal SOM for the Nordic Seas provided realistic estimates of fCO2 distribution. This SOM had an uncertainty of 12.5 uatm, which is close to the LSCOP target of 10.8 uatm for estimation of net fCO2 flux for the Northern North Atlantic. Master i Meteorologi og oseanografi MAMN-GEOF GEOF399 Master Thesis Greenland Greenland Sea Nordic Seas North Atlantic University of Bergen: Bergen Open Research Archive (BORA-UiB) Greenland |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
Norwegian Bokmål |
topic |
Self organizing map 756213 |
spellingShingle |
Self organizing map 756213 Kvæstad, Elise Mapping the fugacity of CO2 in the Nordic Seas and the northern North Atlantic Ocean |
topic_facet |
Self organizing map 756213 |
description |
Self organizing maps (SOMs) have been used to estimate seawater fugacity of CO2 (fCO2) distribution in the Nordic Seas and the northern North Atlantic Ocean for 2005-2007. Four maps were produced for each region using various combinations of the parameters MLD, SST, CHL and SSS to train the SOM. The combination of MLD+SST gave the most realistic fCO2 map for all the basins, which was surprising as one would expect that more input parameters would generate more realistic maps. SOMs were estimated in the northern North Atlantic Ocean and the Nordic Seas, the northern North Atlantic Ocean, and the Nordic Seas. The SOMs for the Nordic Seas were also merged with the SOMs for the northern North Atlantic Ocean, which generated better results than the SOM for the whole study area. The merged SOMs had minimal issues with discontinuity. All the SOMs generated incorrect fCO2 values for the deepest mixed layer depths in the Greenland Sea. A theory is that this may be the result of an artifact in the training dataset. This illustrate the importance of having a broad data coverage when using the SOM technique. The most optimal SOM for the Nordic Seas provided realistic estimates of fCO2 distribution. This SOM had an uncertainty of 12.5 uatm, which is close to the LSCOP target of 10.8 uatm for estimation of net fCO2 flux for the Northern North Atlantic. Master i Meteorologi og oseanografi MAMN-GEOF GEOF399 |
format |
Master Thesis |
author |
Kvæstad, Elise |
author_facet |
Kvæstad, Elise |
author_sort |
Kvæstad, Elise |
title |
Mapping the fugacity of CO2 in the Nordic Seas and the northern North Atlantic Ocean |
title_short |
Mapping the fugacity of CO2 in the Nordic Seas and the northern North Atlantic Ocean |
title_full |
Mapping the fugacity of CO2 in the Nordic Seas and the northern North Atlantic Ocean |
title_fullStr |
Mapping the fugacity of CO2 in the Nordic Seas and the northern North Atlantic Ocean |
title_full_unstemmed |
Mapping the fugacity of CO2 in the Nordic Seas and the northern North Atlantic Ocean |
title_sort |
mapping the fugacity of co2 in the nordic seas and the northern north atlantic ocean |
publisher |
The University of Bergen |
publishDate |
2013 |
url |
https://hdl.handle.net/1956/7690 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland Sea Nordic Seas North Atlantic |
genre_facet |
Greenland Greenland Sea Nordic Seas North Atlantic |
op_relation |
https://hdl.handle.net/1956/7690 |
op_rights |
Copyright the author. All rights reserved |
_version_ |
1766019471397355520 |