Reference crop evapotranspiration determined with a modified Makkink equation

A modified version of the Makkink equation is shown to be a suitable alternative for Penman's formula for the determination of the crop reference evapotranspiration Eref that is used in the so‐called crop factor approach. Makkink's equation requires solar radiation and temperature data onl...

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Veröffentlicht in:	Hydrological processes 1998-06, Vol.12 (7), p.1053-1062
Hauptverfasser:	de Bruin, H. A. R., Lablans, W. N.
Format:	Artikel
Sprache:	eng
Schlagworte:	Agricultural and forest climatology and meteorology. Irrigation. Drainage Agricultural and forest meteorology Agronomy. Soil science and plant productions Biological and medical sciences crop factor approach Fundamental and applied biological sciences. Psychology General agronomy. Plant production Makkink equation Meteorologie en Luchtkwaliteit Meteorology and Air Quality Penman formula reference crop evapotranspiration Water balance and requirements. Evapotranspiration
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Beschreibung
Zusammenfassung:	A modified version of the Makkink equation is shown to be a suitable alternative for Penman's formula for the determination of the crop reference evapotranspiration Eref that is used in the so‐called crop factor approach. Makkink's equation requires solar radiation and temperature data only. Since 1987 the Royal Netherlands Meteorological Institute has calculated Eref with the modified Makkink's formula on a routine base. Using solar radiation derived from geostationary satellites, remotely sensed estimates of crop reference evapotranspiration can be obtained. © 1998 John Wiley & Sons, Ltd.
ISSN:	0885-6087 1099-1085
DOI:	10.1002/(SICI)1099-1085(19980615)12:7<1053::AID-HYP639>3.0.CO;2-E