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Abstract:

In this note, changes in temperature extremes over a 40-yr period are analyzed, based on daily minimum and maximum temperatures over Argentina. Trend analysis was performed on seasonal means, standard deviations, and extremes (5th and 95th percentiles) over the 1959-98 period. The strongest (positive) changes over time occurred in mean summer minimum temperature, whereas the standard deviation decreased. Mean maximum temperatures mostly decrease over time in summer over northern Argentina, but they increase in Patagonia (southern Argentina). Generally, negative trends were obtained in the number of cold nights and warm days per summer, while the number of warm nights and cold days has increased at certain locations. Patagonia shows many stations with an increasing number of warm days and nights in winter and a decreasing number of cold days and nights in summer. The summer mean temperature is more sensitive to extremes than the winter one. In summer, the increase in mean temperature is more strongly related to the increase in the number of warm days and nights than to a decrease in the number of cold days and nights. In winter, the region with the highest correlation was found in Patagonia, while in the most productive area (La Pampa, Argentina), very little or nonsignificant association exists between mean temperature and the occurrence of warm or cold days. © 2004 American Meteorological Society.

Registro:

Documento: Artículo
Título:Observed trends and changes in temperature extremes over Argentina
Autor:Rusticucci, M.; Barrucand, M.
Filiación:Depto. Ciencias la Atmosfera/Oceanos, FCEN, Universidad de Buenos Aires, Ciudad Universitaria Pab II, 1428 Buenos Aires, Argentina
CONICET, Buenos Aires, Argentina
Palabras clave:Correlation methods; Earth atmosphere; Sensitivity analysis; Temperature control; Temperature measurement; Standard deviations; Trend analysis; Climate change; extreme event; regional climate; statistical analysis; temperature anomaly; trend analysis; Argentina; South America; Western Hemisphere; World
Año:2004
Volumen:17
Número:20
Página de inicio:4099
Página de fin:4107
DOI: http://dx.doi.org/10.1175/1520-0442(2004)017<4099:OTACIT>2.0.CO;2
Título revista:Journal of Climate
Título revista abreviado:J. Clim.
ISSN:08948755
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08948755_v17_n20_p4099_Rusticucci

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Citas:

---------- APA ----------
Rusticucci, M. & Barrucand, M. (2004) . Observed trends and changes in temperature extremes over Argentina. Journal of Climate, 17(20), 4099-4107.
http://dx.doi.org/10.1175/1520-0442(2004)017<4099:OTACIT>2.0.CO;2
---------- CHICAGO ----------
Rusticucci, M., Barrucand, M. "Observed trends and changes in temperature extremes over Argentina" . Journal of Climate 17, no. 20 (2004) : 4099-4107.
http://dx.doi.org/10.1175/1520-0442(2004)017<4099:OTACIT>2.0.CO;2
---------- MLA ----------
Rusticucci, M., Barrucand, M. "Observed trends and changes in temperature extremes over Argentina" . Journal of Climate, vol. 17, no. 20, 2004, pp. 4099-4107.
http://dx.doi.org/10.1175/1520-0442(2004)017<4099:OTACIT>2.0.CO;2
---------- VANCOUVER ----------
Rusticucci, M., Barrucand, M. Observed trends and changes in temperature extremes over Argentina. J. Clim. 2004;17(20):4099-4107.
http://dx.doi.org/10.1175/1520-0442(2004)017<4099:OTACIT>2.0.CO;2