Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 525686
Title An analysis of actual evapotranspiration
Author(s) Rijtema, P.E.
Source Wageningen University. Promotor(en): F. Hellinga. - Wageningen : Pudoc - 107
Publication type Dissertation, internally prepared
Publication year 1965
Keyword(s) meteorologie - evaporatie - evapotranspiratie - bodem - hydrologie - emissie - waterdamp - meteorology - evaporation - evapotranspiration - soil - hydrology - emission - water vapour
Categories Meteorology (General) / Soil Physics
Abstract The main interacting factors determining the actual evapotranspiration from crops were analysed.

The apparent diffusion resistance of the crop was introduced because of the geometry of the evaporative surface. Its relation to light intensity and to suction in the leaves had been estimated for grass.

The precipitation intercepted by the crop increased evapotranspiration when the diffusion resistance of the crop was not zero.

The relation between capillary conductivity and suction was discussed. The relation between diffusion resistance of the crop and the soil physical conditions was calculated with a flow model.

A mathematical model of the factors determining evapotranspiration was derived. The possibility of relating evapotranspiration from crops and evaporation from a free water surface was discussed, and the transfer of such a relation from one area to another different in climate was considered.

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