Abstract
Dew formation and its importance in the hydrologic cycle and energy requirements for evaporation is a scientific interest and important in high-resolution evapotranspiration modeling. In humid areas, where dew point temperature is reached at night and in the morning, significant energy is required to evaporate the dew. In this chapter, detailed methods of estimating dew and the energy required for evaporation are presented along with results from experimental study. High-resolution meteorological observations coupled with temperature and wind profile measurements were used to develop heat transfer coefficients and other parameters required to estimate sensible and latent heat. The 44 days of study of dew evaporation resulted in an estimate of 5% of energy required for daily evaporation being used to evaporate dew. The study also showed that on the average, 75 min of duration of morning net radiation is required to evaporate dew at the study site. As much as 0.5-mm daily dew evaporation was estimated.
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Abtew, W., Melesse, A. (2013). Energy Requirements of Dew Evaporation. In: Evaporation and Evapotranspiration. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-4737-1_4
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DOI: https://doi.org/10.1007/978-94-007-4737-1_4
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