Asociación española de fitosociología

Comparative Analysis of Mean Temperature Trends in Continental Spain over the Period 1961-2010

Autores:David Ríos Cornejo, Angel Penas Merino, Sara del Rio González
Fecha de envío: 2012-10-17 10:35:16

DOI: 10.5616/ijgr120005


Palabras clave: Climatic change, Mann-Kendall test, Spain, temperature, trends
Número: 2. Issue: 1. Páginas: 41-85.

Abstract:

Monthly, seasonal and annual temperature trends between 1961 and 2010, as well as in the periods 1961-1978, 1979-1993 and 1994-2010 over continental Spain have been calculated in this work, according to the 144 thermopluviometric stations data widespread throughout the territory. The magnitude and sign of the trends have been evaluated with the Sen’s slope estimator and their statistical significances have been determined with the non parametric test of Mann-Kendall. As the main result, it has been confirmed what many other authors have already pointed out: a general increase in temperature (monthly, seasonal and annual) in Spain over the last 50 years, especially in March and summer months and, therefore, spring and summer. By and large, a substantial decrease in some monthly, seasonal and annual mean temperature as well as in continentality has been found in the cycle 1961-1978. In addition, the period 1979-1993 is characterized by statistically non significant increases in temperature trends (except July, August and spring with significant increases) and the lack of pattern in annual mean temperature, meanwhile a decrease in temperature only significant in March and winter over the period 1994-2010 has been observed in some Spanish areas.

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