Community Research and Development Information Service - CORDIS


A reference formula was identified for calculating potential evapotranspiration (PET) on a ten-year time scale throughout the European Community. For calculating this ten-year PET solely from thermometric data, a simplified formula was chosen, which can be used in systems to forecast European crop yields or to give early warning of climatic anomalies affecting agriculture - such as drought. The work was carried out in three stages: - identification of the best available reference formula, by means of tests comparing results to several series of measurements of maximum PET from turf; - analysis of long series of data on estimated ten-year PET from 33 stations throughout the EC; - selection of a simplified formula with results most closely mirroring the above long data series, and thus least at variance with estimates obtained using the reference formula.

Additional information

Authors: CHOISNEL E, Meteo France, Subdivision d'Agrométéorologie, Service Central, Paris (FR);DE VILLELE O, Institut National de la Recherche Agronomique, Station de Bioclimatologie, Avignon (FR);LACROZE F, SGS Qualitest, Division Agrotechnologie Services (FR)
Bibliographic Reference: EUR 14223 FR (1992) 178 pp., FS, free of charge
Availability: Available from Joint Research Centre, Public Relations Office, I-21020 Ispra (Va.) (IT)
Record Number: 199210765 / Last updated on: 1994-12-02
Original language: fr
Available languages: fr