Earth Syst. Sci. Data, 9, 721–738, 2017 https://doi.org/10.5194/essd-9-721-2017 © Author(s) 2017. This work is distributed under the Creative Commons Attribution 3.0 License. SPREAD: a high-resolution daily gridded precipitation dataset for Spain – an extreme events frequency and intensity overview Roberto Serrano-Notivoli1,2,3, Santiago Beguería3, Miguel Ángel Saz1,2, Luis Alberto Longares1,2, and Martín de Luis1,2 1Department of Geography and Regional Planning, University of Zaragoza, Zaragoza, 50009, Spain 2Environmental Sciences Institute (IUCA), University of Zaragoza, Zaragoza, 50009, Spain 3Estación Experimental de Aula Dei, Consejo Superior de Investigaciones Científicas (EEAD-CSIC), Zaragoza, 50059, Spain Correspondence to: Roberto Serrano-Notivoli (
[email protected]) Received: 5 May 2017 – Discussion started: 7 June 2017 Revised: 17 August 2017 – Accepted: 18 August 2017 – Published: 14 September 2017 Abstract. A high-resolution daily gridded precipitation dataset was built from raw data of 12 858 observato- ries covering a period from 1950 to 2012 in peninsular Spain and 1971 to 2012 in Balearic and Canary islands. The original data were quality-controlled and gaps were filled on each day and location independently. Using the serially complete dataset, a grid with a 5 × 5 km spatial resolution was constructed by estimating daily pre- cipitation amounts and their corresponding uncertainty at each grid node. Daily precipitation estimations were compared to original observations to assess the quality of the gridded dataset. Four daily precipitation indices were computed to characterise the spatial distribution of daily precipitation and nine extreme precipitation in- dices were used to describe the frequency and intensity of extreme precipitation events.