A survey of carbon monoxide and non-methane hydrocarbons in the Arctic Ocean during summer 2010
International audience During the ARK XXV 1 + 2 expedition in the Arctic Ocean carried out in June-July 2010 aboard the R/V Polarstern, we measured carbon monoxide (CO), nonmethane hydrocarbons (NMHC) and phytoplankton pigments at the sea surface and down to a depth of 100 m. The CO and NMHC sea-sur...
Published in: | Biogeosciences |
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Main Authors: | , , , , , , |
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Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2013
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Online Access: | https://hal.science/hal-03117306 https://hal.science/hal-03117306/document https://hal.science/hal-03117306/file/bg-10-1909-2013.pdf https://doi.org/10.5194/bg-10-1909-2013 |
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HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) |
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language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Tran, Sophie Bonsang, Bernard Gros, Valérie Peeken, I. Sarda-Esteve, Roland Bernhardt, A. Belviso, Sauveur A survey of carbon monoxide and non-methane hydrocarbons in the Arctic Ocean during summer 2010 |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience During the ARK XXV 1 + 2 expedition in the Arctic Ocean carried out in June-July 2010 aboard the R/V Polarstern, we measured carbon monoxide (CO), nonmethane hydrocarbons (NMHC) and phytoplankton pigments at the sea surface and down to a depth of 100 m. The CO and NMHC sea-surface concentrations were highly variable; CO, propene and isoprene levels ranged from 0.6 to 17.5 nmol L −1 , 1 to 322 pmol L −1 and 1 to 541 pmol L −1 , respectively. The CO and alkene concentrations as well as their sea-air fluxes were enhanced in polar waters off of Greenland, which were more stratified because of ice melting and richer in chromophoric dissolved organic matter (CDOM) than typical North Atlantic waters. The spatial distribution of the surface concentrations of CO was consistent with our current understanding of CO-induced UV photoproduction in the sea. The vertical distributions of the CO and alkenes were comparable and followed the trend of light penetration, with the concentrations displaying a relatively regular exponential decrease down to non-measurable values below 50 m. However, no diurnal variations of CO or alkene concentrations were observed in the stratified and irradiated surface layers. On several occasions, we observed the existence of subsurface CO maxima at the level of the deep chlorophyll maximum. This finding suggests the existence of a nonphotochemical CO production pathway, most likely of phytoplanktonic origin. The corresponding production rates normalized to the chlorophyll content were in the range of those estimated from laboratory experiments. In general, the vertical distributions of isoprene followed that of the phytoplankton biomass. These data support the existence of a dominant photochemical source of CO and light alkenes enhanced in polar waters of the Arctic Ocean, with a minor contribution of a biological source of CO. The biological source of isoprene is observed in the different water masses but significantly increases in the warmer Atlantic waters. |
author2 |
Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Chimie Atmosphérique Expérimentale (CAE) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Alfred Wegener Institute for Polar and Marine Research (AWI) ICOS-RAMCES (ICOS-RAMCES) |
format |
Article in Journal/Newspaper |
author |
Tran, Sophie Bonsang, Bernard Gros, Valérie Peeken, I. Sarda-Esteve, Roland Bernhardt, A. Belviso, Sauveur |
author_facet |
Tran, Sophie Bonsang, Bernard Gros, Valérie Peeken, I. Sarda-Esteve, Roland Bernhardt, A. Belviso, Sauveur |
author_sort |
Tran, Sophie |
title |
A survey of carbon monoxide and non-methane hydrocarbons in the Arctic Ocean during summer 2010 |
title_short |
A survey of carbon monoxide and non-methane hydrocarbons in the Arctic Ocean during summer 2010 |
title_full |
A survey of carbon monoxide and non-methane hydrocarbons in the Arctic Ocean during summer 2010 |
title_fullStr |
A survey of carbon monoxide and non-methane hydrocarbons in the Arctic Ocean during summer 2010 |
title_full_unstemmed |
A survey of carbon monoxide and non-methane hydrocarbons in the Arctic Ocean during summer 2010 |
title_sort |
survey of carbon monoxide and non-methane hydrocarbons in the arctic ocean during summer 2010 |
publisher |
HAL CCSD |
publishDate |
2013 |
url |
https://hal.science/hal-03117306 https://hal.science/hal-03117306/document https://hal.science/hal-03117306/file/bg-10-1909-2013.pdf https://doi.org/10.5194/bg-10-1909-2013 |
genre |
Arctic Ocean Greenland North Atlantic Phytoplankton |
genre_facet |
Arctic Ocean Greenland North Atlantic Phytoplankton |
op_source |
ISSN: 1726-4170 EISSN: 1726-4189 Biogeosciences https://hal.science/hal-03117306 Biogeosciences, 2013, 10 (3), pp.1909-1935. ⟨10.5194/bg-10-1909-2013⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/bg-10-1909-2013 hal-03117306 https://hal.science/hal-03117306 https://hal.science/hal-03117306/document https://hal.science/hal-03117306/file/bg-10-1909-2013.pdf doi:10.5194/bg-10-1909-2013 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/bg-10-1909-2013 |
container_title |
Biogeosciences |
container_volume |
10 |
container_issue |
3 |
container_start_page |
1909 |
op_container_end_page |
1935 |
_version_ |
1810295559540441088 |
spelling |
ftceafr:oai:HAL:hal-03117306v1 2024-09-15T17:53:27+00:00 A survey of carbon monoxide and non-methane hydrocarbons in the Arctic Ocean during summer 2010 Tran, Sophie Bonsang, Bernard Gros, Valérie Peeken, I. Sarda-Esteve, Roland Bernhardt, A. Belviso, Sauveur Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Chimie Atmosphérique Expérimentale (CAE) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Alfred Wegener Institute for Polar and Marine Research (AWI) ICOS-RAMCES (ICOS-RAMCES) 2013 https://hal.science/hal-03117306 https://hal.science/hal-03117306/document https://hal.science/hal-03117306/file/bg-10-1909-2013.pdf https://doi.org/10.5194/bg-10-1909-2013 en eng HAL CCSD European Geosciences Union info:eu-repo/semantics/altIdentifier/doi/10.5194/bg-10-1909-2013 hal-03117306 https://hal.science/hal-03117306 https://hal.science/hal-03117306/document https://hal.science/hal-03117306/file/bg-10-1909-2013.pdf doi:10.5194/bg-10-1909-2013 info:eu-repo/semantics/OpenAccess ISSN: 1726-4170 EISSN: 1726-4189 Biogeosciences https://hal.science/hal-03117306 Biogeosciences, 2013, 10 (3), pp.1909-1935. ⟨10.5194/bg-10-1909-2013⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/article Journal articles 2013 ftceafr https://doi.org/10.5194/bg-10-1909-2013 2024-07-22T13:16:34Z International audience During the ARK XXV 1 + 2 expedition in the Arctic Ocean carried out in June-July 2010 aboard the R/V Polarstern, we measured carbon monoxide (CO), nonmethane hydrocarbons (NMHC) and phytoplankton pigments at the sea surface and down to a depth of 100 m. The CO and NMHC sea-surface concentrations were highly variable; CO, propene and isoprene levels ranged from 0.6 to 17.5 nmol L −1 , 1 to 322 pmol L −1 and 1 to 541 pmol L −1 , respectively. The CO and alkene concentrations as well as their sea-air fluxes were enhanced in polar waters off of Greenland, which were more stratified because of ice melting and richer in chromophoric dissolved organic matter (CDOM) than typical North Atlantic waters. The spatial distribution of the surface concentrations of CO was consistent with our current understanding of CO-induced UV photoproduction in the sea. The vertical distributions of the CO and alkenes were comparable and followed the trend of light penetration, with the concentrations displaying a relatively regular exponential decrease down to non-measurable values below 50 m. However, no diurnal variations of CO or alkene concentrations were observed in the stratified and irradiated surface layers. On several occasions, we observed the existence of subsurface CO maxima at the level of the deep chlorophyll maximum. This finding suggests the existence of a nonphotochemical CO production pathway, most likely of phytoplanktonic origin. The corresponding production rates normalized to the chlorophyll content were in the range of those estimated from laboratory experiments. In general, the vertical distributions of isoprene followed that of the phytoplankton biomass. These data support the existence of a dominant photochemical source of CO and light alkenes enhanced in polar waters of the Arctic Ocean, with a minor contribution of a biological source of CO. The biological source of isoprene is observed in the different water masses but significantly increases in the warmer Atlantic waters. Article in Journal/Newspaper Arctic Ocean Greenland North Atlantic Phytoplankton HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) Biogeosciences 10 3 1909 1935 |