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-00296546v1 2023-11-12T04:03:55+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) 2008-05-15 https://hal.science/hal-00296546 https://hal.science/hal-00296546/document https://hal.science/hal-00296546/file/acp-8-2537-2008.pdf en eng HAL CCSD European Geosciences Union hal-00296546 https://hal.science/hal-00296546 https://hal.science/hal-00296546/document https://hal.science/hal-00296546/file/acp-8-2537-2008.pdf info:eu-repo/semantics/OpenAccess ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.science/hal-00296546 Atmospheric Chemistry and Physics, 2008, 8 (9), pp.2537-2554 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2008 ftccsdartic 2023-10-21T23:16:36Z 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 particle nucleation around the globe. We show that predicted annual spatial patterns of particle formation 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 continents, 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 . The zonally-averaged vertical distribution of IMN rates indicates that IMN is significant in the tropical upper troposphere, the entire middle latitude troposphere, and over Antarctica. Comparing the relative strengths of particle sources due to IMN and due to primary particle emissions demonstrates that IMN is significant on a global scale. Further research is needed to reduce modeling uncertainties and to understand the ultimate contribution of freshly 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 particle nucleation around the globe. We show that predicted annual spatial patterns of particle formation 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 continents, 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 . The zonally-averaged vertical distribution of IMN rates indicates that IMN is significant in the tropical upper troposphere, the entire middle latitude troposphere, and over Antarctica. Comparing the relative strengths of particle sources due to IMN and due to primary particle emissions demonstrates that IMN is significant on a global scale. Further research is needed to reduce modeling uncertainties and to understand the ultimate contribution of freshly 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 |
2008 |
url |
https://hal.science/hal-00296546 https://hal.science/hal-00296546/document https://hal.science/hal-00296546/file/acp-8-2537-2008.pdf |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.science/hal-00296546 Atmospheric Chemistry and Physics, 2008, 8 (9), pp.2537-2554 |
op_relation |
hal-00296546 https://hal.science/hal-00296546 https://hal.science/hal-00296546/document https://hal.science/hal-00296546/file/acp-8-2537-2008.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782339621094424576 |