Ocean–atmosphere exchange of organic carbon and CO 2 surrounding the Antarctic Peninsula
Exchangeable organic carbon (OC) dynamics and CO 2 fluxes in the Antarctic Peninsula during austral summer were highly variable, but the region appeared to be a net sink for OC and nearly in balance for CO 2 . Surface exchangeable dissolved organic carbon (EDOC) measurements had a 43 ± 3 (standard e...
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ftdoajarticles:oai:doaj.org/article:2bee0e9e7c3c45048a22e26fa6203973 2023-05-15T14:01:19+02:00 Ocean–atmosphere exchange of organic carbon and CO 2 surrounding the Antarctic Peninsula S. Ruiz-Halpern M. Ll. Calleja J. Dachs S. Del Vento M. Pastor M. Palmer S. Agustí C. M. Duarte 2014-05-01T00:00:00Z https://doi.org/10.5194/bg-11-2755-2014 https://doaj.org/article/2bee0e9e7c3c45048a22e26fa6203973 EN eng Copernicus Publications http://www.biogeosciences.net/11/2755/2014/bg-11-2755-2014.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 doi:10.5194/bg-11-2755-2014 https://doaj.org/article/2bee0e9e7c3c45048a22e26fa6203973 Biogeosciences, Vol 11, Iss 10, Pp 2755-2770 (2014) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2014 ftdoajarticles https://doi.org/10.5194/bg-11-2755-2014 2022-12-31T00:20:00Z Exchangeable organic carbon (OC) dynamics and CO 2 fluxes in the Antarctic Peninsula during austral summer were highly variable, but the region appeared to be a net sink for OC and nearly in balance for CO 2 . Surface exchangeable dissolved organic carbon (EDOC) measurements had a 43 ± 3 (standard error, hereafter SE) μmol C L −1 overall mean and represented around 66% of surface non-purgeable dissolved organic carbon (DOC) in Antarctic waters, while the mean concentration of the gaseous fraction of organic carbon (GOC H –1 ) was 46 ± 3 SE μmol C L −1 . There was a tendency towards low fugacity of dissolved CO 2 ( f CO 2-w ) in waters with high chlorophyll a (Chl a ) content and high f CO 2-w in areas with high krill densities. However, such relationships were not found for EDOC. The depth profiles of EDOC were also quite variable and occasionally followed Chl a profiles. The diel cycles of EDOC showed two distinct peaks, in the middle of the day and the middle of the short austral dark period, concurrent with solar radiation maxima and krill night migration patterns. However, no evident diel pattern for GOC H –1 or CO 2 was observed. The pool of exchangeable OC is an important and active compartment of the carbon budget surrounding the Antarctic Peninsula and adds to previous studies highlighting its importance in the redistribution of carbon in marine environments. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Directory of Open Access Journals: DOAJ Articles Antarctic Antarctic Peninsula Austral The Antarctic Biogeosciences 11 10 2755 2770 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
spellingShingle |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 S. Ruiz-Halpern M. Ll. Calleja J. Dachs S. Del Vento M. Pastor M. Palmer S. Agustí C. M. Duarte Ocean–atmosphere exchange of organic carbon and CO 2 surrounding the Antarctic Peninsula |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
Exchangeable organic carbon (OC) dynamics and CO 2 fluxes in the Antarctic Peninsula during austral summer were highly variable, but the region appeared to be a net sink for OC and nearly in balance for CO 2 . Surface exchangeable dissolved organic carbon (EDOC) measurements had a 43 ± 3 (standard error, hereafter SE) μmol C L −1 overall mean and represented around 66% of surface non-purgeable dissolved organic carbon (DOC) in Antarctic waters, while the mean concentration of the gaseous fraction of organic carbon (GOC H –1 ) was 46 ± 3 SE μmol C L −1 . There was a tendency towards low fugacity of dissolved CO 2 ( f CO 2-w ) in waters with high chlorophyll a (Chl a ) content and high f CO 2-w in areas with high krill densities. However, such relationships were not found for EDOC. The depth profiles of EDOC were also quite variable and occasionally followed Chl a profiles. The diel cycles of EDOC showed two distinct peaks, in the middle of the day and the middle of the short austral dark period, concurrent with solar radiation maxima and krill night migration patterns. However, no evident diel pattern for GOC H –1 or CO 2 was observed. The pool of exchangeable OC is an important and active compartment of the carbon budget surrounding the Antarctic Peninsula and adds to previous studies highlighting its importance in the redistribution of carbon in marine environments. |
format |
Article in Journal/Newspaper |
author |
S. Ruiz-Halpern M. Ll. Calleja J. Dachs S. Del Vento M. Pastor M. Palmer S. Agustí C. M. Duarte |
author_facet |
S. Ruiz-Halpern M. Ll. Calleja J. Dachs S. Del Vento M. Pastor M. Palmer S. Agustí C. M. Duarte |
author_sort |
S. Ruiz-Halpern |
title |
Ocean–atmosphere exchange of organic carbon and CO 2 surrounding the Antarctic Peninsula |
title_short |
Ocean–atmosphere exchange of organic carbon and CO 2 surrounding the Antarctic Peninsula |
title_full |
Ocean–atmosphere exchange of organic carbon and CO 2 surrounding the Antarctic Peninsula |
title_fullStr |
Ocean–atmosphere exchange of organic carbon and CO 2 surrounding the Antarctic Peninsula |
title_full_unstemmed |
Ocean–atmosphere exchange of organic carbon and CO 2 surrounding the Antarctic Peninsula |
title_sort |
ocean–atmosphere exchange of organic carbon and co 2 surrounding the antarctic peninsula |
publisher |
Copernicus Publications |
publishDate |
2014 |
url |
https://doi.org/10.5194/bg-11-2755-2014 https://doaj.org/article/2bee0e9e7c3c45048a22e26fa6203973 |
geographic |
Antarctic Antarctic Peninsula Austral The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Austral The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula |
genre_facet |
Antarc* Antarctic Antarctic Peninsula |
op_source |
Biogeosciences, Vol 11, Iss 10, Pp 2755-2770 (2014) |
op_relation |
http://www.biogeosciences.net/11/2755/2014/bg-11-2755-2014.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 doi:10.5194/bg-11-2755-2014 https://doaj.org/article/2bee0e9e7c3c45048a22e26fa6203973 |
op_doi |
https://doi.org/10.5194/bg-11-2755-2014 |
container_title |
Biogeosciences |
container_volume |
11 |
container_issue |
10 |
container_start_page |
2755 |
op_container_end_page |
2770 |
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1766271035178483712 |