✦ LIBER ✦

A comparison of formulae for the calculation of water loss from vegetated surfaces

✍ Scribed by N. Thompson

Publisher: Elsevier Science
Year: 1982
Weight: 381 KB
Volume: 26
Category: Article
ISSN: 0002-1571
DOI: 10.1016/0002-1571(82)90043-7

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✦ Synopsis

Accurate calculations of evapotranspiration using a range of meteorological and crop physiological values in the Penman--Monteith combination formula are compared with results from much simpler schemes based on the same formula but suitable for routine operational calculations. It is shown that for most purposes a scheme using the form of the aerodynamic resistance r a applicable to neutral atmospheric stability in the Penman--Monteith formula gives acceptable results, provided the combination equation has been modified to account for the effects of a difference between surface and air temperature in applications where available energy is calculated rather than measured.

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