Formation and characteristics of ions and charged aerosol particles in a native Australian Eucalypt forest

Simple item page
dc.contributor.authorSuni, Ten_AU
dc.contributor.authorKulmala, Men_AU
dc.contributor.authorHirsikko, Aen_AU
dc.contributor.authorBergman, Ten_AU
dc.contributor.authorLaakso, Len_AU
dc.contributor.authorAalto, PPen_AU
dc.contributor.authorLeuning, Ren_AU
dc.contributor.authorCleugh, Hen_AU
dc.contributor.authorZegelin, Sen_AU
dc.contributor.authorHughes, Den_AU
dc.contributor.authorvan Gorsel, Een_AU
dc.contributor.authorKitchen, Men_AU
dc.contributor.authorVana, Men_AU
dc.contributor.authorHõrrak, Uen_AU
dc.contributor.authorMirme, Sen_AU
dc.contributor.authorMirme, Aen_AU
dc.contributor.authorSevanto, Sen_AU
dc.contributor.authorTwining, JRen_AU
dc.contributor.authorTadros, CVen_AU
dc.date.accessioned2024-10-04T05:44:13Zen_AU
dc.date.available2024-10-04T05:44:13Zen_AU
dc.date.issued2008-01-14en_AU
dc.date.statistics2024-10-04en_AU
dc.description.abstractAbstract. Biogenic aerosol formation is likely to contribute significantly to the global aerosol load. In recent years, new-particle formation has been observed in various ecosystems around the world but hardly any measurements have taken place in the terrestrial Southern Hemisphere. Here, we report the first results of atmospheric ion and charged particle concentrations as well as of new-particle formation in a Eucalypt forest in Tumbarumba, South-East Australia, from July 2005 to October 2006. The measurements were carried out with an Air Ion Spectrometer (AIS) with a size range from 0.34 to 40 nm. The Eucalypt forest was a very strong source of new aerosol particles. Daytime aerosol formation took place on 52% of days with acceptable data, which is 2–3 times as often as in the Nordic boreal zone. Average growth rates for negative/positive 1.5–3 nm particles during these formation events were 2.89/2.68 nmh−1, respectively; for 3-7 nm particles 4.26/4.03, and for 7–20 nm particles 8.90/7.58 nmh−1, respectively. The growth rates for large ions were highest when the air was coming from the native forest which suggests that the Eucalypts were a strong source of condensable vapours. Average concentrations of cluster ions (0.34–1.8 nm) were 2400/1700 cm−3 for negative/positive ions, very high compared to most other measurements around the world. One reason behind these high concentrations could be the strong radon efflux from the soils around the Tumbarumba field site. Furthermore, comparison between night-time and daytime concentrations supported the view that cluster ions are produced close to the surface within the boundary layer also at night but that large ions are mostly produced in daytime. Finally, a previously unreported phenomenon, nocturnal aerosol formation, appeared in 32% of the analysed nights but was clustered almost entirely within six months from summer to autumn in 2006. From January to May, nocturnal formation was 2.5 times as frequent as daytime formation. Therefore, it appears that in summer and autumn, nocturnal production was the major mechanism for aerosol formation in Tumbarumba. © Author(s) 2008. This work is licensed under the Creative Commons Attribution-NonCommercial-Share Alike 2.5 Licence.en_AU
dc.identifier.citationSuni, T., Kulmala, M., Hirsikko, A., Bergman, T., Laakso, L., Aalto, P. P., Leuning, R., Cleugh, H., Zegelin, S., Hughes, D., van Gorsel, E., Kitchen, M., Vana, M., Hõrrak, U., Mirme, S., Mirme, A., Sevanto, S., Twining, J., & Tadros, C. (2008). Formation and characteristics of ions and charged aerosol particles in a native Australian Eucalypt forest. Atmospheric Chemistry and Physics, 8(1), 129-139. doi:10.5194/acp-8-129-2008en_AU
dc.identifier.issn1680-7316en_AU
dc.identifier.issn1680-7324en_AU
dc.identifier.issue1en_AU
dc.identifier.journaltitleAtmospheric Chemistry and Physicsen_AU
dc.identifier.pagination129-139en_AU
dc.identifier.urihttp://dx.doi.org/10.5194/acp-8-129-2008en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15740en_AU
dc.identifier.volume8en_AU
dc.languageEnglishen_AU
dc.language.isoenen_AU
dc.publisherCopernicus Publicationsen_AU
dc.subjectIonsen_AU
dc.subjectAerosolsen_AU
dc.subjectParticlesen_AU
dc.subjectAustraliaen_AU
dc.subjectForestsen_AU
dc.subjectEucalyptusesen_AU
dc.subjectTreesen_AU
dc.subjectConcentration ratioen_AU
dc.titleFormation and characteristics of ions and charged aerosol particles in a native Australian Eucalypt foresten_AU
dc.typeJournal Articleen_AU
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
acp-8-129-2008.pdf
Size:
548.29 KB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.66 KB
Format:
Plain Text
Description:
Download
Collections
Journal Articles