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Detection of trends and break points in temperature: the case of Umbria (Italy) and Guadalquivir Valley (Spain)

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A Correction to this article was published on 13 April 2018

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Abstract

The increase of air surface temperature at global scale is a fact with values around 0.85 °C since the late nineteen century. Nevertheless, the increase is not equally distributed all over the world, varying from one region to others. Thus, it becomes interesting to study the evolution of temperature indices for a certain area in order to analyse the existence of climatic trend in it. In this work, monthly temperature time series from two Mediterranean areas are used: the Umbria region in Italy, and the Guadalquivir Valley in southern Spain. For the available stations, six temperature indices (three annual and three monthly) of mean, average maximum and average minimum temperature have been obtained, and the existence of trends has been studied by applying the non-parametric Mann–Kendall test. Both regions show a general increase in all temperature indices, being the pattern of the trends clearer in Spain than in Italy. The Italian area is the only one at which some negative trends are detected. The presence of break points in the temperature series has been also studied by using the non-parametric Pettit test and the parametric standard normal homogeneity test (SNHT), most of which may be due to natural phenomena.

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Change history

  • 13 April 2018

    In the original authors list there was a mistake with the surname of Professor Alessia Flammini. The corrected authors list is:

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Acknowledgements

The authors want to acknowledge the kindness and help of Jose Carlos González-Hidalgo with providing the temperature data of the Guadalquivir Valley stations from the database MOTEDAS.

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Authors and Affiliations

  1. Área de Proyectos de Ingeniería, Departmento de Ingeniería Rural, Universidad de Córdoba, Edificio Leonardo Da Vinci, Campus de Rabanales, Carretera Nacional IV Km 396, Córdoba, Spain

    Pascual Herrera-Grimaldi, Amanda García-Marín, José Luís Ayuso-Muñoz & José Luís Ayuso-Ruíz

  2. Department of Civil and Environmental Engineering, University of Perugia, Via G. Duranti, 93, Perugia, Italy

    Alessia Flamini & Renato Morbidelli

Authors
  1. Pascual Herrera-Grimaldi
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  2. Amanda García-Marín
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  3. José Luís Ayuso-Muñoz
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  4. Alessia Flamini
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  5. Renato Morbidelli
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  6. José Luís Ayuso-Ruíz
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Corresponding author

Correspondence to Amanda García-Marín.

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Herrera-Grimaldi, P., García-Marín, A., Ayuso-Muñoz, J.L. et al. Detection of trends and break points in temperature: the case of Umbria (Italy) and Guadalquivir Valley (Spain). Acta Geophys. 66, 329–343 (2018). https://doi.org/10.1007/s11600-018-0118-1

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  • DOI: https://doi.org/10.1007/s11600-018-0118-1

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