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| Titel |
On the quality of climate proxies derived from newspaper reports – a case study |
| VerfasserIn |
D. Gallego, R. Garcia-Herrera, R. Prieto, C. Pena-Ortiz |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1814-9324
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| Digitales Dokument |
URL |
| Erschienen |
In: Climate of the Past ; 4, no. 1 ; Nr. 4, no. 1 (2008-02-06), S.11-18 |
| Datensatznummer |
250001507
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| Publikation (Nr.) |
 copernicus.org/cp-4-11-2008.pdf |
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| Zusammenfassung |
| One of the main problems in climate reconstruction from documentary sources
is the evaluation of the quality of non instrumental meteorological records
in absence of instrumental observations to perform a calibration. In these
cases it is mandatory to envision different approaches to assess the
climatic signal in a reconstruction. This work is aimed to test the
consistency of a snow frequency reconstruction in the central Argentinean
Andes by studying the synoptic patterns related to the occurrence of
precipitation in this area. While the original reconstruction covers the
period between 1885 and 1996, the insufficiency of overlapping instrumental
data limited the calibration to a short 15-year interval. In this paper we
evaluate the performance of the reconstructed series for the entire 45-year
period between 1958 and 1996 by analyzing the displacement in the jet stream
and the patterns of geopotential height related to anomalies in the
reconstructed snow frequency series. Previous works have linked the
precipitation in the central Andes to the ENSO through the Pacific South
American mode. We also have found this connection between ENSO and the
reconstructed precipitation. Finally, it is shown that the ENSO relationship
is the cause of a significant link between the precipitation anomalies in
the central Argentinean Andes and the ice extent around the Antarctic
Peninsula. |
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