Vergara - 1976 - Physiological and morphological adaptability of ri

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7. A) Diurnal course of water temperature (afier Iwakiri. 1963): B) Profiles of temperature in
a clear and turbid water layer (Sate. 1960); C) Energy balance results of a fully grown rieefield
(RGE. 1967b}; D) Relationship between net radiation and latent heat flux above a rice canopy
(RG13. 1967b).
icantly affected not only by meteorological parameters such as radiation, wind.
air temperature and air humidity‘. but also by the presence of the plant canopy
Figure 7A shows a comparison of diurnal changes of water temperature observed
at different depths in clear water. The amplitude (r Tw) o1‘ the diurnal temperature
wave decreased with increasing water depth. It can be also seen in Fig.
7A that the diurnal temperature wave in deeper “tater lags behind that in shallovt-‘er
water.
Uchijiina (1959) found that the amplitude of the diurnal temperature wave in
water is diminished by the factor
l/‘bgt/l + (w/bF
where b‘, = MY, T), is the water surface to air exchange velocity.
Ais the slope of the curve relating saturation vapor pressure to temperature at