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Abstract:

The main goal of this work was to conduct an intraseasonal climate variability analysis using wavelet and principal component analysis over a southeastern South American daily maximum and minimum temperature series from the end of the nineteenth until the beginning of the twenty-first century. The analysis showed that there is a definite and coherent signal in the intraseasonal maximum and minimum temperatures. The most noticeable signal was observed during the winter months. The frequency of the intraseasonal signal was more complex for the maximum temperature, and in some stations, it displayed a bimodal distribution. A defined pattern that described a coherent variability between 30 and 60 days throughout the entire region was observed. This pattern potentially allows classification of the regional variability and adjustments to the temperature forecasting models on a daily basis. © 2012 American Meteorological Society.

Registro:

Documento: Artículo
Título:A study of intraseasonal temperature variability in southeastern South America
Autor:Naumann, G.; Vargas, W.M.
Filiación:National Scientific and Technological Research Council (CONICET), Department of Atmospheric and Oceanic Sciences, University of Buenos Aires, Buenos Aires, Argentina
Climate Risk Management Unit, Joint Research Centre, European Commission, Ispra, Italy
Palabras clave:Anomalies; Intraseasonal variability; Spectral analysis/models/distribution; Anomalies; Bimodal distribution; Climate variability; Coherent signals; Forecasting models; Intraseasonal variability; Maximum temperature; Regional variability; Southeastern South America; Temperature series; Temperature variability; Winter months; Climatology; Principal component analysis; air temperature; climate change; climate variation; principal component analysis; seasonal variation; spectral analysis; wavelet analysis; South America
Año:2012
Volumen:25
Número:17
Página de inicio:5892
Página de fin:5903
DOI: http://dx.doi.org/10.1175/JCLI-D-11-00482.1
Título revista:Journal of Climate
Título revista abreviado:J. Clim.
ISSN:08948755
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08948755_v25_n17_p5892_Naumann

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Citas:

---------- APA ----------
Naumann, G. & Vargas, W.M. (2012) . A study of intraseasonal temperature variability in southeastern South America. Journal of Climate, 25(17), 5892-5903.
http://dx.doi.org/10.1175/JCLI-D-11-00482.1
---------- CHICAGO ----------
Naumann, G., Vargas, W.M. "A study of intraseasonal temperature variability in southeastern South America" . Journal of Climate 25, no. 17 (2012) : 5892-5903.
http://dx.doi.org/10.1175/JCLI-D-11-00482.1
---------- MLA ----------
Naumann, G., Vargas, W.M. "A study of intraseasonal temperature variability in southeastern South America" . Journal of Climate, vol. 25, no. 17, 2012, pp. 5892-5903.
http://dx.doi.org/10.1175/JCLI-D-11-00482.1
---------- VANCOUVER ----------
Naumann, G., Vargas, W.M. A study of intraseasonal temperature variability in southeastern South America. J. Clim. 2012;25(17):5892-5903.
http://dx.doi.org/10.1175/JCLI-D-11-00482.1