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    Author(s): Robert R. Ziemer
    Date: 1979
    Source: Reviews of Geophysics and Space Physics 17(6): 1175-1186.
    Publication Series: Miscellaneous Publication
    PDF: Download Publication  (52 KB)


    For years, the principal objective of evapotranspiration research has been to calculate the loss of water under varying conditions of climate, soil, and vegetation. The early simple empirical methods have generally been replaced by more detailed models which more closely represent the physical and biological processes involved. Monteith's modification of the original Penman evapotranspiration equation to include a term for canopy resistance signaled a shift in emphasis in evapotranspiration research from a physically controlled process to one which can be physiologically controlled. This change in direction was acknowledged by Federer [1975] in his earlier review and has continued for the past four years. The scope of this review, as were the reviews of Ekern [1971] and Federer [1975], is, for the most part, limited to evaporation from terrestrial surfaces rather than from lake or ocean surfaces

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    Ziemer, Robert R. 1979. Evaporation and transpiration. Reviews of Geophysics and Space Physics 17(6): 1175-1186.


    PSW4351, soil moisture, water loss, evapotranspiration, canopy resistanc

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