气候变化领域集成服务门户(CCPortal): Investigation of coastal sea-fog formation using the WIBS (wideband integrated bioaerosol sensor) technique

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DOI	10.5194/acp-19-5737-2019
	Investigation of coastal sea-fog formation using the WIBS (wideband integrated bioaerosol sensor) technique
	Daly S.M.; O'Connor D.J.; Healy D.A.; Hellebust S.; Arndt J.; McGillicuddy E.; Feeney P.; Quirke M.; Wenger J.; Sodeau J.
发表日期	2019
ISSN	16807316
起始页码	5737
结束页码	5751
卷号	19 期号:8
英文摘要	A wideband integrated bioaerosol sensor (WIBS- 4) was deployed in Haulbowline Island, Cork Harbour, to detect fluorescence particles in real time during July and September 2011. A scanning mobility particle sizer (SMPS) was also installed providing sizing analysis of the particles over the 10-450 nm range. During the campaign, multiple fog formation events occurred; they coincided with dramatic increases in the recorded fluorescent particle counts. The WIBS sizing and fluorescence intensity profiles indicated that the origin of the signals was potentially non-biological in nature (i.e. PBAPs, primary biological aerosol particles). Furthermore, the data did not support the presence of known fluorescing chemical particles like SOA (secondary organic aerosol). Complementary laboratory studies showed that the field results could potentially be explained by the adsorption of molecular iodine onto water droplets to form I2.H2O/x complexes. The release of iodine into the coastal atmosphere from exposed kelp at low tides has been known for many years. This process leads to the production of small IxOy particles, which can act as cloud condensation nuclei (CCN). While the process of molecular iodine release from coastal kelp sources, subsequent particle formation, and the observations of sea mists and fogs have been studied in detail, this study provides a potential link between the three phenomena. Of mechanistic interest is the fact that molecular iodine included into (rather than on) water droplets does not appear to fluoresce as measured using WIBS instrumentation. The study indicates a previously unsuspected stabilizing transport mechanism for iodine in the marine environment. Hence the stabilization of the molecular form would allow its more extensive distribution throughout the troposphere before eventual photolysis. © Author(s) 2019.
语种	英语
scopus关键词	adsorption; aerosol; cloud condensation nucleus; fog; particle size; sensor
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/144448
作者单位	School of Chemistry and Environmental Research Institute, University College Cork, Cork, Ireland; School of Chemical and Pharmaceutical Sciences, Technological University Dublin, Dublin, Ireland
推荐引用方式 GB/T 7714	Daly S.M.,O'Connor D.J.,Healy D.A.,et al. Investigation of coastal sea-fog formation using the WIBS (wideband integrated bioaerosol sensor) technique[J],2019,19(8).
APA	Daly S.M..,O'Connor D.J..,Healy D.A..,Hellebust S..,Arndt J..,...&Sodeau J..(2019).Investigation of coastal sea-fog formation using the WIBS (wideband integrated bioaerosol sensor) technique.Atmospheric Chemistry and Physics,19(8).
MLA	Daly S.M.,et al."Investigation of coastal sea-fog formation using the WIBS (wideband integrated bioaerosol sensor) technique".Atmospheric Chemistry and Physics 19.8(2019).