Observed trends and changes in temperature extremes over Argentina

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 (positiv...

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Autores principales: Rusticucci, M., Barrucand, M.
Formato: JOUR
Materias:
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
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_08948755_v17_n20_p4099_Rusticucci
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_08948755_v17_n20_p4099_Rusticucci2023-10-03T15:42:08Z Observed trends and changes in temperature extremes over Argentina Rusticucci, M. Barrucand, M. 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 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. Fil:Rusticucci, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Barrucand, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_08948755_v17_n20_p4099_Rusticucci
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic 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
spellingShingle 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
Rusticucci, M.
Barrucand, M.
Observed trends and changes in temperature extremes over Argentina
topic_facet 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
description 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.
format JOUR
author Rusticucci, M.
Barrucand, M.
author_facet Rusticucci, M.
Barrucand, M.
author_sort Rusticucci, M.
title Observed trends and changes in temperature extremes over Argentina
title_short Observed trends and changes in temperature extremes over Argentina
title_full Observed trends and changes in temperature extremes over Argentina
title_fullStr Observed trends and changes in temperature extremes over Argentina
title_full_unstemmed Observed trends and changes in temperature extremes over Argentina
title_sort observed trends and changes in temperature extremes over argentina
url http://hdl.handle.net/20.500.12110/paper_08948755_v17_n20_p4099_Rusticucci
work_keys_str_mv AT rusticuccim observedtrendsandchangesintemperatureextremesoverargentina
AT barrucandm observedtrendsandchangesintemperatureextremesoverargentina
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