Globally significant oceanic source of organic carbon aerosol

International audience Significant concentrations of organic carbon (OC) aerosol are observed at three oceanic surface sites (Amsterdam Island, Azores and Mace Head). Two global chemical transport models (CTMs) underpredict OC concentrations at these sites (normalised mean bias of À67% and À58%). Du...

Full description

Bibliographic Details
Published in:Geophysical Research Letters
Main Authors: Spracklen, Dominick, Arnold, Steve, Sciare, Jean, Carslaw, Kenneth, Pio, Casimiro
Other Authors: Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), Chimie Atmosphérique Expérimentale (CAE), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-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)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)
Format: Article in Journal/Newspaper
Language:English
Published: HAL CCSD 2008
Subjects:
Online Access:https://hal.archives-ouvertes.fr/hal-03194066
https://hal.archives-ouvertes.fr/hal-03194066/document
https://hal.archives-ouvertes.fr/hal-03194066/file/2008GL033359.pdf
https://doi.org/10.1029/2008GL033359
id ftccsdartic:oai:HAL:hal-03194066v1
record_format openpolar
spelling ftccsdartic:oai:HAL:hal-03194066v1 2023-05-15T13:22:25+02:00 Globally significant oceanic source of organic carbon aerosol Spracklen, Dominick Arnold, Steve Sciare, Jean Carslaw, Kenneth Pio, Casimiro Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) Chimie Atmosphérique Expérimentale (CAE) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-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)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) 2008-06-28 https://hal.archives-ouvertes.fr/hal-03194066 https://hal.archives-ouvertes.fr/hal-03194066/document https://hal.archives-ouvertes.fr/hal-03194066/file/2008GL033359.pdf https://doi.org/10.1029/2008GL033359 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2008GL033359 hal-03194066 https://hal.archives-ouvertes.fr/hal-03194066 https://hal.archives-ouvertes.fr/hal-03194066/document https://hal.archives-ouvertes.fr/hal-03194066/file/2008GL033359.pdf doi:10.1029/2008GL033359 info:eu-repo/semantics/OpenAccess ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.archives-ouvertes.fr/hal-03194066 Geophysical Research Letters, American Geophysical Union, 2008, 35 (12), pp.n/a-n/a. ⟨10.1029/2008GL033359⟩ [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 2008 ftccsdartic https://doi.org/10.1029/2008GL033359 2021-12-19T00:18:11Z International audience Significant concentrations of organic carbon (OC) aerosol are observed at three oceanic surface sites (Amsterdam Island, Azores and Mace Head). Two global chemical transport models (CTMs) underpredict OC concentrations at these sites (normalised mean bias of À67% and À58%). During periods of high biological activity monthly mean concentrations are underpredicted by a factor of 5-20. At Amsterdam Island and Mace Head, observed OC correlates well (R 2 = 0.61-0.77) with backtrajectory weighted chlorophyll-a, suggesting an oceanic OC source driven by biological activity. We use a combination of remote sensed chlorophyll-a, back trajectories and observed OC to derive an empirical relation between chlorophyll-a and the total oceanic OC emission flux. Using the GEOS-chem CTM we show a global oceanic OC emission, from primary and secondary sources, of $8 Tg/year matches observations. This emission is comparable in magnitude to the fossil fuel OC source and increases the simulated global OC burden by 20%. Article in Journal/Newspaper Amsterdam Island Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Mace ENVELOPE(155.883,155.883,-81.417,-81.417) Geophysical Research Letters 35 12 n/a n/a
institution Open Polar
collection Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
op_collection_id ftccsdartic
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
Spracklen, Dominick
Arnold, Steve
Sciare, Jean
Carslaw, Kenneth
Pio, Casimiro
Globally significant oceanic source of organic carbon aerosol
topic_facet [SDU.OCEAN]Sciences of the Universe [physics]/Ocean
Atmosphere
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces
environment
description International audience Significant concentrations of organic carbon (OC) aerosol are observed at three oceanic surface sites (Amsterdam Island, Azores and Mace Head). Two global chemical transport models (CTMs) underpredict OC concentrations at these sites (normalised mean bias of À67% and À58%). During periods of high biological activity monthly mean concentrations are underpredicted by a factor of 5-20. At Amsterdam Island and Mace Head, observed OC correlates well (R 2 = 0.61-0.77) with backtrajectory weighted chlorophyll-a, suggesting an oceanic OC source driven by biological activity. We use a combination of remote sensed chlorophyll-a, back trajectories and observed OC to derive an empirical relation between chlorophyll-a and the total oceanic OC emission flux. Using the GEOS-chem CTM we show a global oceanic OC emission, from primary and secondary sources, of $8 Tg/year matches observations. This emission is comparable in magnitude to the fossil fuel OC source and increases the simulated global OC burden by 20%.
author2 Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE)
Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)
Chimie Atmosphérique Expérimentale (CAE)
Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-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)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)
format Article in Journal/Newspaper
author Spracklen, Dominick
Arnold, Steve
Sciare, Jean
Carslaw, Kenneth
Pio, Casimiro
author_facet Spracklen, Dominick
Arnold, Steve
Sciare, Jean
Carslaw, Kenneth
Pio, Casimiro
author_sort Spracklen, Dominick
title Globally significant oceanic source of organic carbon aerosol
title_short Globally significant oceanic source of organic carbon aerosol
title_full Globally significant oceanic source of organic carbon aerosol
title_fullStr Globally significant oceanic source of organic carbon aerosol
title_full_unstemmed Globally significant oceanic source of organic carbon aerosol
title_sort globally significant oceanic source of organic carbon aerosol
publisher HAL CCSD
publishDate 2008
url https://hal.archives-ouvertes.fr/hal-03194066
https://hal.archives-ouvertes.fr/hal-03194066/document
https://hal.archives-ouvertes.fr/hal-03194066/file/2008GL033359.pdf
https://doi.org/10.1029/2008GL033359
long_lat ENVELOPE(155.883,155.883,-81.417,-81.417)
geographic Mace
geographic_facet Mace
genre Amsterdam Island
genre_facet Amsterdam Island
op_source ISSN: 0094-8276
EISSN: 1944-8007
Geophysical Research Letters
https://hal.archives-ouvertes.fr/hal-03194066
Geophysical Research Letters, American Geophysical Union, 2008, 35 (12), pp.n/a-n/a. ⟨10.1029/2008GL033359⟩
op_relation info:eu-repo/semantics/altIdentifier/doi/10.1029/2008GL033359
hal-03194066
https://hal.archives-ouvertes.fr/hal-03194066
https://hal.archives-ouvertes.fr/hal-03194066/document
https://hal.archives-ouvertes.fr/hal-03194066/file/2008GL033359.pdf
doi:10.1029/2008GL033359
op_rights info:eu-repo/semantics/OpenAccess
op_doi https://doi.org/10.1029/2008GL033359
container_title Geophysical Research Letters
container_volume 35
container_issue 12
container_start_page n/a
op_container_end_page n/a
_version_ 1766364772471668736