Problems
Inoue, K. and Z. Uchijima (1979) Experimental study of microstructure
of wind turbulence in rice and maize canopies. Bull. Nat. Inst. Agric.
Sci. Tokyo, Japan, Ser. A 26:l-88.
Lowry, W. P. (1969) Weather and Life, New York: Academic Press.
Lumley, J. L. and H. A. Panofsky (1964) The Structure of Atmospheric
Turbulence. New York: Wiley.
Maki, T. (1975) Interrelationships between zero-plane displacement,
aerodynamic roughness length and plant canopy height. J. Agricultural Meteorology 3 1 :6 1-70. (Japanese text, English summary and
figure legends.)
Monteith, J.L. (1973) Principles of Environmental Physics. New York:
American Elsevier.
Sauer, T. (1993) Sensible and Latent Heat Exchange at the Soil Surface
Beneath a Maize Canopy. Ph.D. thesis, Department of Soil Science,
Univ. of Wisconsin, Madison, WI.
Shaw, R. H. and A. R. Pereira (1982) Aerodynamic roughness of a plant
canopy: a numerical experiment. Agric. Meteorol. 2651-65.
Tatarski, V. I. (1961) Wave Propagation in a Turbulent Medium, New
York: Dover.
Problems
5.1. If the wind measured at 2 m (height measured from the soil surface)
over a wheat field is 5 mls, what is the wind speed at the top of the
canopy? Assume the wheat is 60 cm in height.
5.2. Using the following data find u* and z,. Assume d = 0.08 m. Use
a graphical or prve-fitting method; not Eqs. (5.2) and (5.3).
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Height (m)
Wind speed (mls)
5.3. What is the wind speed 10 cm above the ground in problem 5.1 ?
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