Temporal and spatial temperature variability and change over Spain during 1850-2005

Brunet, M., Jones, P. D. ORCID: https://orcid.org/0000-0001-5032-5493, Sigro, J., Saladie, O., Aguilar, E., Moberg, A., Della-Marta, P. M., Lister, D., Walther, A. and Lopez, D. (2007) Temporal and spatial temperature variability and change over Spain during 1850-2005. Journal of Geophysical Research, 112 (D12117). ISSN 2156-2202

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We analyze temporal and spatial patterns of temperature change over Spain during the period 1850–2005, using daily maximum (Tmax), minimum (Tmin), and mean (Tmean) temperatures from the 22 longest and most reliable Spanish records. Over mainland Spain, a significant (at 0.01 level) warming of 0.10°C/decade is found for the annual average of Tmean. Autumn and winter contributed slightly more than spring and summer to the annual warming over the 1850–2005 period. The overall warming is also associated with higher rates of change for Tmax than Tmin (0.11° versus 0.08°C/decade for 1850–2005). This asymmetric diurnal warming increased in the twentieth century (0.17° versus 0.09°C/decade during 1901–2005). Nevertheless, at many (few) individual stations, the difference between Tmax and Tmin is not statistically significant over 1850–2005 (1901–2005). Principal Component Analysis has been carried out to identify spatial modes of Spanish long-term temperature variability (1901–2005). Three principal spatial patterns are found, Northern Spain, Southeastern and Eastern Spain, and Southwestern Spain. All three patterns show similar significant warming trends. The overall warming has been more associated with reductions in cold extremes, as opposed to increases in warm extremes. Estimated trends in the number of moderately extreme cold days (Tmax < 10th percentile) and moderately extreme cold nights (Tmin < 10th percentile) show significant reductions of 0.74 and 0.54 days/decade, respectively, over 1850–2005. Moderately extreme warm days and nights (Tmax and Tmin > 90th percentile) increased significantly but at lower rates of 0.53 and 0.49 days/decade.

Item Type: Article
Faculty \ School: Faculty of Science > School of Environmental Sciences
UEA Research Groups: Faculty of Science > Research Groups > Climatic Research Unit
Faculty of Science > Research Groups > Centre for Ocean and Atmospheric Sciences
Faculty of Science > Research Groups > Marine and Atmospheric Sciences (former - to 2017)
Faculty of Science > Research Groups > Climate, Ocean and Atmospheric Sciences (former - to 2017)
Depositing User: Rosie Cullington
Date Deposited: 28 Feb 2011 10:55
Last Modified: 05 Mar 2024 14:30
URI: https://ueaeprints.uea.ac.uk/id/eprint/25239
DOI: 10.1029/2006JD008249

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