Daily meteorological measurements taken in Athens during the period 1951 -1984 are used to investigate the feasibility of calculating Penman-Monteith's evapotranspiration estimates when wind measurements are not available. Daily sheltered Piche data (from a large meteorological screen) are shown to
Some considerations on the behaviour of the Piche evaporimeter
β Scribed by Vries, D. A. ;Venema, H. J.
- Publisher
- Springer-Verlag
- Year
- 1954
- Tongue
- English
- Weight
- 655 KB
- Volume
- 5-6
- Category
- Article
- ISSN
- 1573-5052
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## Abstract Water loss measured by the Piche evaporimeter, __E__, was found to be highly correlated with the calculated aerodynamic term, __Ea__, in Penman's evaporation formula. The error introduced by using the more convenient Piche evaporimeter measurements was less than that caused by the use o
rate over a wide range of shear rates, lt~ this paper we explain the origin of this phenomenon. It is suggested that this non-Newtonian ~,~haviom is due to the non-analytic behaviour of the deformation of the structure factor in shear flow. The structure factor shows boundary-layer behaviour at zer