but also unsuitable for agrometeorological field
applications.
(Suppliers: C 2)
2.6 Evaporation
2.6.1 General comments
As the water loss from the surface depends on a variety of
meteorological parameters, such as air humidity, temperature,
radiation, wind and atmospheric pressure, an accurate
determination of this component of the water balance equation
causes considerable problems. Although theoretical
approaches, based either on the energy budget or the mass
transfer method, allow for estimations of this meteorological
parameter, direct measurements are often preferred.
However, a common problem to all direct measurements is the
representativeness of the installation, relative to the
"natural" conditions of the above mentioned meteorological
parameters.
The amount of water loss is analogous to rainfall expressed
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