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Discussion papers
https://doi.org/10.5194/essd-2019-64
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-2019-64
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Data description paper 05 Jul 2019

Data description paper | 05 Jul 2019

Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Earth System Science Data (ESSD).

Reference crop evapotranspiration database in Spain (1961–2014)

Miquel Tomas-Burguera1, Sergio M. Vicente-Serrano2, Santiago Beguería1, Fergus Reig2, and Borja Latorre1 Miquel Tomas-Burguera et al.
  • 1Estación Experimental de Aula Dei, Consejo Superior de Investigaciones Científicas (EEAD-CSIC), Avda. Montañana 1005, Zaragoza, E-50059, Spain
  • 2Instituto Pirenáico de Ecología, Consejo Superior de Investigaciones Científicas (IPE-CSIC), Avda. Montañana 1005, Zaragoza, E-50059, Spain

Abstract. Obtaining climate grids for distinct variables is of high importance to develop better climate studies, but also to offer usable products for other researchers and to end users. As a measure of atmospheric evaporative demand (AED), reference evapotranspiration (ETo) is a key variable for understanding both water and energy terrestrial balances, being important for climatology, hydrology and agronomy. In spite of its importance, the calculation of ETo is not very common, mainly because data of a high number of climate variables are required, and some of them are not commonly available.

To solve this problem, a strategy based on the spatial interpolation of climate variables previous to calculation of ETo using FAO-56 Penman-Monteith was followed to obtain an ETo database for Continental Spain and Balearic Islands covering the 1961–2014 period at a spatial resolution of 1.1 km and at weekly temporal resolution. In this database, values for the radiative and aerodynamic components as well as the estimated uncertainty related with ETo are also provided.

This database is available to download in Network Common Data Form (netcdf) format at https://doi.org/10.20350/digitalCSIC/8615 (Tomas-Burguera et al., 2019), and a map visualization tool (http://speto.csic.es) is also available to help users to download data of one specific point in comma-separated values (csv) format.

A relevant number of research ares could take advantage of this database. Providing only some examples: i) the study of budyko curve, which relates rainfall data with evapotranspiration and AED at watershed scale; ii) the calculation of drought indices using AED data, such as SPEI or PDSI; iii) agroclimatic studies related with irrigation requirement; iv) validation of Climate Models water and energy balance; v) the study of the impacts of climate change in AED.

Miquel Tomas-Burguera et al.
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Status: open (until 30 Aug 2019)
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Miquel Tomas-Burguera et al.
Data sets

SPETo (Spanish reference evapotranspiration) M. Tomás-Burguera, S. Beguería, S. M. Vicente Serrano, F. Reig-Gracia, and B. Latorre Garcés https://doi.org/10.20350/digitalCSIC/8615

Miquel Tomas-Burguera et al.
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Latest update: 17 Jul 2019
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Short summary
A database of reference evapotranspiration (ETo) was obtained and made publicly available for Spain covering the 1961–2014 period at a spatial resolution of 1.1 km. Previous to ETo calculation, data of required climate variables were interpolated and validated, and the uncertainty was estimated. Obtained ETo values can be used to calculate irrigation requirements, to improve drought studies, which was our main motivation, and to study the impact of climate change, as a positive trend was detected.
A database of reference evapotranspiration (ETo) was obtained and made publicly available for...
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