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...
Published in: | Geophysical Research Letters |
---|---|
Main Authors: | , , , , |
Other Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2008
|
Subjects: | |
Online Access: | https://hal.science/hal-03194066 https://hal.science/hal-03194066/document https://hal.science/hal-03194066/file/2008GL033359.pdf https://doi.org/10.1029/2008GL033359 |
id |
ftinsu:oai:HAL:hal-03194066v1 |
---|---|
record_format |
openpolar |
spelling |
ftinsu:oai:HAL:hal-03194066v1 2024-04-28T07:54:30+00:00 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) 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)) 2008-06-28 https://hal.science/hal-03194066 https://hal.science/hal-03194066/document https://hal.science/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.science/hal-03194066 https://hal.science/hal-03194066/document https://hal.science/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.science/hal-03194066 Geophysical Research Letters, 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 ftinsu https://doi.org/10.1029/2008GL033359 2024-04-05T00:37:31Z 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 Institut national des sciences de l'Univers: HAL-INSU Geophysical Research Letters 35 12 n/a n/a |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
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) 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)) |
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.science/hal-03194066 https://hal.science/hal-03194066/document https://hal.science/hal-03194066/file/2008GL033359.pdf https://doi.org/10.1029/2008GL033359 |
genre |
Amsterdam Island |
genre_facet |
Amsterdam Island |
op_source |
ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-03194066 Geophysical Research Letters, 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.science/hal-03194066 https://hal.science/hal-03194066/document https://hal.science/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_ |
1797575992996265984 |