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  • Geographical Extension of the E.U. Global Radiation Study (EUR 15745 EN) so as to include also Eastern Europe, the Middle East and Northern Africa

Abstract

Precize and up-to-date information on agriculture production is a vital componant in running market economies. To obtain rapid information, the Europeen Union has set up a Pilot Project to introduce information drived from remote sensing data in the agriculture statistics system of the Europeen Union. This system is used for regional and national monitoring of crop state and quantitive yield predictions. It depends on remote sensing and on the interpretation of the results of agrometeorological models, amongst others, are driven by the quantity of incoming solar radiation. Unfortunately, this meteorological parameter is not always readily available. This report provides an up-dated assessment of the sources of information on radiation available in Europe, Northen Africa and the Middle East. It includes an inventory of the observed radiation componants services and of the instrumentation used. Plots on the spatial variation of the constants of the Angstrom-Prescott, the Supit and the Hargreaves equation are given. Based on these equations daily estimates of global radiation can be made using meteorological parameters which readily available on the Global Telecommunication System. The following algorithm is proposed to estimate global radiation and subsequently introduce this value in the Crop Growth Monitoring System of the Joint Research Centre of the Europeen Union: if observed global radiation ia available it will be used, if not, but sunshine duration method (e.g. Angstrom-Prescott) will be applied, if no sunshine duration is available, then the methos proposed in this paper may be applied.

Additional information

Authors: R.R. VAN KAPPEL, COMMISSION OF THE EUROPEAN COMMUNITIES JOINT RESEARCH CENTRE;I. SUPIT, COMMISSION OF THE EUROPEAN COMMUNITIES JOINT RESEARCH CENTRE
Bibliographic Reference: EUR 18104 EN (1998) 98pp
Availability: Available from OOPEC Sales agents
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