Ion-mediated nucleation as an important global source of tropospheric aerosols
International audience Aerosol nucleation events have been observed at a variety of locations worldwide, and may have significant climatic and health implications. While ions have long been suggested as favorable nucleation embryos, their significance as a global source of particles has remained unc...
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ftccsdartic:oai:HAL:hal-00303102v1 2023-11-12T04:07:06+01:00 Ion-mediated nucleation as an important global source of tropospheric aerosols Yu, F. Wang, Z. Luo, G. Turco, R. Atmospheric Sciences Research Center (ASRC) University at Albany SUNY State University of New York (SUNY)-State University of New York (SUNY) Institute of Atmospheric Physics Beijing (IAP) Chinese Academy of Sciences Beijing (CAS) Department of Atmospheric and Oceanic Sciences Los Angeles (AOS) University of California Los Angeles (UCLA) University of California (UC)-University of California (UC) 2007-09-17 https://hal.science/hal-00303102 https://hal.science/hal-00303102/document https://hal.science/hal-00303102/file/acpd-7-13597-2007.pdf en eng HAL CCSD European Geosciences Union hal-00303102 https://hal.science/hal-00303102 https://hal.science/hal-00303102/document https://hal.science/hal-00303102/file/acpd-7-13597-2007.pdf info:eu-repo/semantics/OpenAccess ISSN: 1680-7367 EISSN: 1680-7375 Atmospheric Chemistry and Physics Discussions https://hal.science/hal-00303102 Atmospheric Chemistry and Physics Discussions, 2007, 7 (5), pp.13597-13626 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2007 ftccsdartic 2023-10-21T23:11:46Z International audience Aerosol nucleation events have been observed at a variety of locations worldwide, and may have significant climatic and health implications. While ions have long been suggested as favorable nucleation embryos, their significance as a global source of particles has remained uncertain. Here, an ion-mediated nucleation (IMN) mechanism, which incorporates new thermodynamic data and physical algorithms, has been integrated into a global chemical transport model (GEOS-Chem) to study ion mediated particle formation in the global troposphere. The simulated annual mean results have been compared to a comprehensive set of data relevant to new particle formation around the globe. We show that predicted annual spatial patterns of particle nucleation rates agree reasonably well with land-, ship-, and aircraft-based observations. Our simulations show that, globally, IMN in the boundary layer is largely confined to two broad latitude belts: one in the northern hemisphere (~20° N?70° N), and one in the southern hemisphere (~30° S?90° S). In the middle latitude boundary layer over continentals, the annual mean IMN rates are generally above 10 4 cm ?3 day ?1 , with some hot spots reaching 10 5 cm ?3 day ?1 . Zonally-averaged vertical distribution of IMN rates indicates that IMN is significant in the tropical upper troposphere, whole middle latitude troposphere, and over Antarctica. The ratio of particle number annual source strength due to IMN to those associated with primary particle emission suggests that IMN contribution is important. Further research is needed to reduce modeling uncertainties and understand the contribution of nucleated particles to the abundance of cloud condensation nuclei. Article in Journal/Newspaper Antarc* Antarctica Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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ftccsdartic |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Yu, F. Wang, Z. Luo, G. Turco, R. Ion-mediated nucleation as an important global source of tropospheric aerosols |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience Aerosol nucleation events have been observed at a variety of locations worldwide, and may have significant climatic and health implications. While ions have long been suggested as favorable nucleation embryos, their significance as a global source of particles has remained uncertain. Here, an ion-mediated nucleation (IMN) mechanism, which incorporates new thermodynamic data and physical algorithms, has been integrated into a global chemical transport model (GEOS-Chem) to study ion mediated particle formation in the global troposphere. The simulated annual mean results have been compared to a comprehensive set of data relevant to new particle formation around the globe. We show that predicted annual spatial patterns of particle nucleation rates agree reasonably well with land-, ship-, and aircraft-based observations. Our simulations show that, globally, IMN in the boundary layer is largely confined to two broad latitude belts: one in the northern hemisphere (~20° N?70° N), and one in the southern hemisphere (~30° S?90° S). In the middle latitude boundary layer over continentals, the annual mean IMN rates are generally above 10 4 cm ?3 day ?1 , with some hot spots reaching 10 5 cm ?3 day ?1 . Zonally-averaged vertical distribution of IMN rates indicates that IMN is significant in the tropical upper troposphere, whole middle latitude troposphere, and over Antarctica. The ratio of particle number annual source strength due to IMN to those associated with primary particle emission suggests that IMN contribution is important. Further research is needed to reduce modeling uncertainties and understand the contribution of nucleated particles to the abundance of cloud condensation nuclei. |
author2 |
Atmospheric Sciences Research Center (ASRC) University at Albany SUNY State University of New York (SUNY)-State University of New York (SUNY) Institute of Atmospheric Physics Beijing (IAP) Chinese Academy of Sciences Beijing (CAS) Department of Atmospheric and Oceanic Sciences Los Angeles (AOS) University of California Los Angeles (UCLA) University of California (UC)-University of California (UC) |
format |
Article in Journal/Newspaper |
author |
Yu, F. Wang, Z. Luo, G. Turco, R. |
author_facet |
Yu, F. Wang, Z. Luo, G. Turco, R. |
author_sort |
Yu, F. |
title |
Ion-mediated nucleation as an important global source of tropospheric aerosols |
title_short |
Ion-mediated nucleation as an important global source of tropospheric aerosols |
title_full |
Ion-mediated nucleation as an important global source of tropospheric aerosols |
title_fullStr |
Ion-mediated nucleation as an important global source of tropospheric aerosols |
title_full_unstemmed |
Ion-mediated nucleation as an important global source of tropospheric aerosols |
title_sort |
ion-mediated nucleation as an important global source of tropospheric aerosols |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.science/hal-00303102 https://hal.science/hal-00303102/document https://hal.science/hal-00303102/file/acpd-7-13597-2007.pdf |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
ISSN: 1680-7367 EISSN: 1680-7375 Atmospheric Chemistry and Physics Discussions https://hal.science/hal-00303102 Atmospheric Chemistry and Physics Discussions, 2007, 7 (5), pp.13597-13626 |
op_relation |
hal-00303102 https://hal.science/hal-00303102 https://hal.science/hal-00303102/document https://hal.science/hal-00303102/file/acpd-7-13597-2007.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782327921581490176 |