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Climate Dynamics

, Volume 52, Issue 5–6, pp 3435–3453 | Cite as

High resolution climate precipitation analysis for north-central Italy, 1961–2015

  • Valentina PavanEmail author
  • Gabriele Antolini
  • Roberto Barbiero
  • Nicola Berni
  • Fabio Brunier
  • Carlo Cacciamani
  • Anselmo Cagnati
  • Orietta Cazzuli
  • Andrea Cicogna
  • Chiara De Luigi
  • Enzo Di Carlo
  • Marco Francioni
  • Luca Maraldo
  • Gianni Marigo
  • Stefano Micheletti
  • Luca Onorato
  • Elvio Panettieri
  • Umberto Pellegrini
  • Renata Pelosini
  • David Piccinini
  • Sara Ratto
  • Christian Ronchi
  • Luca Rusca
  • Stefano Sofia
  • Marco Stelluti
  • Rodica Tomozeiu
  • Tommaso Torrigiani Malaspina
Article
  • 116 Downloads

Abstract

Observational daily precipitation data from a group of 1762 stations over north-central Italy and adjacent areas are used to produce a high resolution daily gridded precipitation analysis covering the period from 1961 to 2015. Input data are checked for quality, time consistency, synchronicity and statistical homogeneity and the final result has been used to describe the spatial and temporal variability of precipitation over the area. Data are interpolated using a modified Shepard scheme and the interpolation errors are compatible with those presented in Isotta et al. (Int J Climatol 34(5):1657–1675, 2014). The analysis is compared with other similar products available over the area considered, and differences and similarities are described, taking into account the impacts of different spatial resolution and time coverage. The data set is used to describe local climate with respect to precipitation, including mean values and seasonality, by using a group of climate annual and seasonal indices: cumulated precipitation, maximum number of consecutive dry days, frequency of wet days, mean precipitation intensity and 50th and 90th percentile of daily precipitation over a season. The linear trends over the full period of these indices are described and compared. It is shown that although the time series of area average total annual precipitation over north-central Italy does not show significant linear trends, these are present locally. In particular, significant negative trends of annual total precipitation are found in central Italy and in the inner part of northern plains, while significant positive linear trends are present in several areas over the Alps and over the Liguria coast. The seasons most affected by changes in precipitation are summer and autumn, which, in most areas, are the driest and wettest seasons. In summer, significant positive trends in total precipitation have been found in areas close to the northern national borders, while significant negative trends are located elsewhere. The number of wet days is significantly decreasing over most of the domain, but the 90th percentile of precipitation is significantly increasing over most of the Alpine area and northern Po Valley. Over the southern part of the Po Valley and central Italy summer precipitation is significantly becoming less frequent and, generally, less intense. In autumn, total precipitation is characterised by significant positive trends over large areas in Northern Italy and by significant negative trends in inner areas of the Central Apennines. The trend patterns present great similarities with those of the 90th percentile of daily precipitation for the same season. The maximum length of dry spell is significantly decreasing in autumn over most areas, including central Italy, while the number of wet days presents negative but mostly non significant trends over the whole domain.

Notes

Acknowledgements

We thank Météo-France, MeteoSwiss, the Zentralanstalt für Meteorologie und Geodynamik (ZAMG) and the Meteorological Service of Slovenia for making available to the ARCIS consortium daily precipitation data for the period 1960–2015 at several stations close to the Italian border. We acknowledge the use of E-OBS dataset from the EU-FP6 project ENSEMBLES (http://ensembles-eu.metoffice.com) and the data providers in the ECAD project (http://www.ecad.eu). We thank Regione Friuli Venezia Giulia - Servizio Gestione Risorse Idriche, Agenzia Regionale per la Protezione dell’Ambiente della Valle d’Aosta and Agenzia Regionale per lo Sviluppo e l’Innovazione del settore Agricolo forestale della Toscana for providing part of the daily observational data used within this work. Finally, we thank three anonymous reviewers for helping us to improve the quality of this paper.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Valentina Pavan
    • 1
    Email author
  • Gabriele Antolini
    • 1
  • Roberto Barbiero
    • 2
  • Nicola Berni
    • 3
  • Fabio Brunier
    • 5
  • Carlo Cacciamani
    • 1
    • 6
  • Anselmo Cagnati
    • 7
  • Orietta Cazzuli
    • 8
  • Andrea Cicogna
    • 9
  • Chiara De Luigi
    • 14
  • Enzo Di Carlo
    • 10
  • Marco Francioni
    • 3
  • Luca Maraldo
    • 13
  • Gianni Marigo
    • 7
  • Stefano Micheletti
    • 9
  • Luca Onorato
    • 4
  • Elvio Panettieri
    • 2
  • Umberto Pellegrini
    • 5
    • 8
  • Renata Pelosini
    • 14
  • David Piccinini
    • 15
  • Sara Ratto
    • 5
  • Christian Ronchi
    • 14
  • Luca Rusca
    • 4
  • Stefano Sofia
    • 15
  • Marco Stelluti
    • 16
  • Rodica Tomozeiu
    • 1
  • Tommaso Torrigiani Malaspina
    • 11
    • 12
  1. 1.ARPAE-SIMCBolognaItaly
  2. 2.Centro Funzionale Provincia Autonoma di TrentoTrentoItaly
  3. 3.Centro Funzionale Regione UmbriaFolignoItaly
  4. 4.ARPA LiguriaGenovaItaly
  5. 5.Centro Funzionale Regionale, Regione Autonoma Valle d’AostaAostaItaly
  6. 6.Dipartimento di Protezione Civile NazionaleRomaItaly
  7. 7.ARPA VenetoArabbaItaly
  8. 8.ARPA LombardiaMilanoItaly
  9. 9.ARPA Friuli Venezia GiuliaPalmanovaItaly
  10. 10.Centro Funzionale Regione Toscana-Settore IdrologicoPisaItaly
  11. 11.Consorzio LaMMASesto FiorentinoItaly
  12. 12.IBIMET-CNRSesto FiorentinoItaly
  13. 13.Ufficio idrografico-Agenzia per la Protezione civile della Provincia Autonoma di BolzanoBozanoItaly
  14. 14.ARPA PiemonteTorinoItaly
  15. 15.Centro Funzionale Regione MarcheAnconaItaly
  16. 16.Servizio Idrografico Regione UmbriaPerugiaItaly

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