Globally significant oceanic source of organic carbon aerosol
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 -67% and -58%). During periods of high bi...
Published in: | Geophysical Research Letters |
---|---|
Main Authors: | , , , , |
Format: | Text |
Language: | English |
Published: |
Amer Geophysical Union
2008
|
Subjects: | |
Online Access: | https://doi.org/10.1029/2008GL033359 https://archimer.ifremer.fr/doc/00237/34831/33290.pdf https://archimer.ifremer.fr/doc/00237/34831/ |
id |
fttriple:oai:gotriple.eu:10670/1.o1t4ub |
---|---|
record_format |
openpolar |
spelling |
fttriple:oai:gotriple.eu:10670/1.o1t4ub 2023-05-15T13:22:24+02:00 Globally significant oceanic source of organic carbon aerosol Spracklen, Dominick V. Arnold, Steve R. Sciare, Jean Carslaw, Kenneth S. Pio, Casimiro 2008-01-01 https://doi.org/10.1029/2008GL033359 https://archimer.ifremer.fr/doc/00237/34831/33290.pdf https://archimer.ifremer.fr/doc/00237/34831/ en eng Amer Geophysical Union doi:10.1029/2008GL033359 10670/1.o1t4ub https://archimer.ifremer.fr/doc/00237/34831/33290.pdf https://archimer.ifremer.fr/doc/00237/34831/ other Archimer, archive institutionnelle de l'Ifremer Geophysical Research Letters (0094-8276) (Amer Geophysical Union), 2008-06 , Vol. 35 , N. 12 / L1281 , P. 1-5 envir geo Text https://vocabularies.coar-repositories.org/resource_types/c_18cf/ 2008 fttriple https://doi.org/10.1029/2008GL033359 2023-01-22T16:43:28Z 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 -67% and -58%). 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 back-trajectory 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 similar to 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%. Text Amsterdam Island Unknown Mace ENVELOPE(155.883,155.883,-81.417,-81.417) Geophysical Research Letters 35 12 n/a n/a |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
envir geo |
spellingShingle |
envir geo Spracklen, Dominick V. Arnold, Steve R. Sciare, Jean Carslaw, Kenneth S. Pio, Casimiro Globally significant oceanic source of organic carbon aerosol |
topic_facet |
envir geo |
description |
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 -67% and -58%). 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 back-trajectory 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 similar to 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%. |
format |
Text |
author |
Spracklen, Dominick V. Arnold, Steve R. Sciare, Jean Carslaw, Kenneth S. Pio, Casimiro |
author_facet |
Spracklen, Dominick V. Arnold, Steve R. Sciare, Jean Carslaw, Kenneth S. Pio, Casimiro |
author_sort |
Spracklen, Dominick V. |
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 |
Amer Geophysical Union |
publishDate |
2008 |
url |
https://doi.org/10.1029/2008GL033359 https://archimer.ifremer.fr/doc/00237/34831/33290.pdf https://archimer.ifremer.fr/doc/00237/34831/ |
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 |
Archimer, archive institutionnelle de l'Ifremer Geophysical Research Letters (0094-8276) (Amer Geophysical Union), 2008-06 , Vol. 35 , N. 12 / L1281 , P. 1-5 |
op_relation |
doi:10.1029/2008GL033359 10670/1.o1t4ub https://archimer.ifremer.fr/doc/00237/34831/33290.pdf https://archimer.ifremer.fr/doc/00237/34831/ |
op_rights |
other |
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_ |
1766364737197572096 |