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<article language="en">
	<journal>
		<journal_title>Climate of the Past Discussions</journal_title>
		<journal_url>www.clim-past-discuss.net</journal_url>
		<issn>1814-9340</issn>
		<eissn>1814-9359</eissn>
		<volume_number>3</volume_number>
		<issue_number>4</issue_number>
		<publication_year>2007</publication_year>
	</journal>
	<doi>10.5194/cpd-3-977-2007</doi>
	<article_url>http://www.clim-past-discuss.net/3/977/2007/</article_url>
	<abstract_html>http://www.clim-past-discuss.net/3/977/2007/cpd-3-977-2007.html</abstract_html>
	<fulltext_pdf>http://www.clim-past-discuss.net/3/977/2007/cpd-3-977-2007.pdf</fulltext_pdf>
	<start_page>977</start_page>
	<end_page>997</end_page>
	<publication_date>2007-08-13</publication_date>
	<article_title content_type="html">On the quality of climate proxies derived from newspaper reports &amp;ndash; a case study</article_title>
	<authors>
		<author numeration="1" affiliations="1">
			<name>D. Gallego</name>
			<email>dgalpuy@upo.es</email>
		</author>
		<author numeration="2" affiliations="2">
			<name>R. García-Herrera</name>
		</author>
		<author numeration="3" affiliations="3">
			<name>R. Prieto</name>
		</author>
		<author numeration="4" affiliations="1">
			<name>C. Peña-Ortiz</name>
		</author>
	</authors>
	<affiliations>
		<affiliation numeration="1" content_type="html">Dpto. de Sistemas Físicos, Químicos y Naturales, Universidad Pablo de Olavide, Ctra. de Utrera Km 1, 41013 Sevilla, Spain</affiliation>
		<affiliation numeration="2" content_type="html">Departamento de Física de la Tierra, Astronomía y Astrofísica II, Facultad de Ciencias Físicas, Universidad Complutense de Madrid, Ciudad Universitaria, 28040 Madrid, Spain</affiliation>
		<affiliation numeration="3" content_type="html">CRICYT Instituto de Nivología, Glaciología y Ciencias Ambientales (IANIGLA), Calle Bajada del Cerro s/n, Parque Gral. San Martín, Mendoza, Argentina</affiliation>
	</affiliations>
	<abstract content_type="html">In this paper, the quality of a reconstruction of daily snow frequency in
the central Andes is evaluated by studying the atmospheric patterns related
to anomalies in the reconstructed series. The origin of precipitation
anomalies in this part of the world is relatively well known and is has been
related to the El Ni&amp;ntilde;o/Southern Oscillation cycle through the Pacific
South American pattern, which implies changes in the subtropical jet across
the Pacific, the blocking activity in the Southeastern Pacific and the ice
formation around the Antarctic Peninsula. We found that the reconstructed
series of snow frequency reproduces every expected anomaly pattern related
to precipitation in the central Andes during the period 1958&amp;ndash;1996. The
methodology developed can help to validate reconstructed series in absence
of instrumental data to perform a direct calibration. In addition, it
provides a physical link between the variability of a climate proxy and the
underlying atmospheric dynamics.</abstract>
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</article>

