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	<journal>
		<journal_title>Atmospheric Chemistry and Physics</journal_title>
		<journal_url>www.atmos-chem-phys.net</journal_url>
		<issn>1680-7316</issn>
		<eissn>1680-7324</eissn>
		<volume_number>7</volume_number>
		<issue_number>9</issue_number>
		<publication_year>2007</publication_year>
	</journal>
	<doi>10.5194/acp-7-2271-2007</doi>
	<article_url>http://www.atmos-chem-phys.net/7/2271/2007/</article_url>
	<abstract_html>http://www.atmos-chem-phys.net/7/2271/2007/acp-7-2271-2007.html</abstract_html>
	<fulltext_pdf>http://www.atmos-chem-phys.net/7/2271/2007/acp-7-2271-2007.pdf</fulltext_pdf>
	<start_page>2271</start_page>
	<end_page>2275</end_page>
	<publication_date>2007-05-04</publication_date>
	<article_title content_type="html">Waterfalls as sources of small charged aerosol particles</article_title>
	<authors>
		<author numeration="1" affiliations="1">
			<name>L. Laakso</name>
			<email>lauri.laakso@iki.fi</email>
		</author>
		<author numeration="2" affiliations="1">
			<name>A. Hirsikko</name>
		</author>
		<author numeration="3" affiliations="1">
			<name>T. Grönholm</name>
		</author>
		<author numeration="4" affiliations="1">
			<name>M. Kulmala</name>
		</author>
		<author numeration="5" affiliations="2">
			<name>A. Luts</name>
		</author>
		<author numeration="6" affiliations="2">
			<name>T.-E. Parts</name>
		</author>
	</authors>
	<affiliations>
		<affiliation numeration="1" content_type="html">Department of Physical Sciences, P.O. Box 64, 00014 University of Helsinki, Finland</affiliation>
		<affiliation numeration="2" content_type="html">Institute of Environmental Physics, University of Tartu, Ülikooli 18, 50090 Tartu, Estonia</affiliation>
	</affiliations>
	<abstract content_type="html">In this study, we measured the mobility distributions of cluster
and intermediate ions with an ion spectrometer near a waterfall.
We observed that the concentration of negative 1.5&amp;ndash;10 nm ions was
one-hundred fold higher than a reference point 100 m away from the
waterfall. Also, the concentration of positive intermediate ions
was found to be higher than that at the reference point by a
factor of ten. This difference was observed only at the smallest
sizes; above 10 nm the difference was insignificant.</abstract>
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</article>

