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CR 82:177-189 (2021)  -  DOI:

Mean temperature evolution on the Spanish mainland 1916-2015

Leire Sandonis1,2, José Carlos González-Hidalgo1,2,*, Dhais Peña-Angulo3, Santiago Beguería4

1Departamento de Geografía, Universidad Zaragoza, 50009 Zaragoza, Spain
2IUCA, Universidad Zaragoza, 50009 Zaragoza, Spain
3Instituto Pirenaico de Ecología, Consejo Superior de Investigaciones Científicas (IPE-CSIC), 50059 Zaragoza, Spain
4Estación Experimental Aula Dei, Consejo Superior de Investigaciones Científicas (EEAD-CSIC), 50059 Zaragoza, Spain
*Corresponding author:

ABSTRACT: An analysis of the evolution of annual and seasonal mean temperatures on the Spanish mainland (western Mediterranean basin) was carried out, using the new MOnthly TEmperature Dataset of Spain century (MOTEDAS_century) data set. This data set was developed by combining archives from the National Meteorological Agency and newly digitised legacy data from the Annual Books published between 1916 and 1949. Both the annual and seasonal regional mean temperature series experienced increasing trends during the study period. However, the increment was neither constant in time (monotonic) nor homogeneous between seasons. Four main periods were identified in the annual mean regional series. The first 3 corresponded to those previously confirmed in global temperature series (rise-pause-rise); a second pause or hiatus was also detected at the end of the period of analysis. The seasonal regional series followed specific patterns: winter mean temperature only increased in the second rising period, autumn in the first and spring and summer during the 2 rising periods. Also, negative trends were found in extended areas in the first pause in spring, and to a lesser extent in summer. From the middle of the 1980s, the trends in annual and seasonal mean values were not significant up until 2015. Furthermore, spatial variations were found in the significance of the trends, revealing regional differences in the intensity of warming through the seasons. In comparison with other versions of secular mean temperature series developed for the Spanish mainland, MOTEDAS_century seems to better capture the spatial variability.

KEY WORDS: Temperature · Trend · Spain · Western Mediterranean basin · MOTEDAS data set

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Cite this article as: Sandonis L, González-Hidalgo JC, Peña-Angulo D, Beguería S (2021) Mean temperature evolution on the Spanish mainland 1916-2015. Clim Res 82:177-189.

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