Boundary-Layer Meteorology

, Volume 14, Issue 3, pp 369–380

Variations of carbon dioxide, air temperature, and horizontal wind within and above a maize crop

  • R. L. Desjardins
  • L. H. AllenJr.
  • E. R. Lemon
Article

Abstract

The mean and short-term fluctuations of carbon dioxide concentration, air temperature, and horizontal wind speed were measured simultaneously within and above a maize crop. Although fluctuations were large at each of the 10 measurement heights, the largest were at the 180-cm level, the densest part of the crop. These short-term fluctuations indicated the broad range of environmental conditions to which plants are exposed (and which plants create or modify) in the field. The statistics of the distributions of these meteorological elements are discussed and the deviations from steady-state conditions are examined by determining linear trends. Finally, variance spectra showed the periodicity of the variations of these meteorological elements.

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References

  1. Allen, L. H., Jr.: 1968, ‘Turbulence and Wind Speed Spectra Within a Japanese Larch Plantation’, J. Appl. Meteorol. 7, 73–78.CrossRefGoogle Scholar
  2. Allen, L. H., Jr.: 1970, ‘An Operational System for (1) Sampling and Sensing Micrometeorological Elements, and (2) Logging and Processing Micrometeorological Data’, in J. M. Powell and C. F. Nolasco (eds.), Proc. 3rd Forest Microelements Symposium, Kananaskis, Alberta, Canada, Canadian Forestry Service, Department of Fisheries and Forestry, Calgary, Alberta, pp. 91–116.Google Scholar
  3. Desjardins, R. L.: 1972, ‘A Study of Carbon Dioxide and Sensible Heat Fluxes Using the Eddy Correlation Technique’, Ph.D. Thesis, Cornell University, Ithaca, N.Y., pp. 174. Diss. Abstracts No. 73–341.Google Scholar
  4. Desjardins, R. L., Sinclair, T. R., and Lemon, E. R.: 1973, ‘Light Fluctuations in Corn’, Agron. J. 65, 904–908.CrossRefGoogle Scholar
  5. Duncan, W. G., Loomis, R. S., Williams, W. A., and Hanau, R.: 1967, ‘A Model for Simulating Photosynthesis in Plant Communities’, Hilgardia 38, 181–205.CrossRefGoogle Scholar
  6. Evans, L. T.: 1963, ‘Extrapolation from Controlled Environments to the Field’, in L. T. Evans (ed.), Environmental Control of Plant Growth, Academic Press, New York and London, pp. 421–437.CrossRefGoogle Scholar
  7. Inoue, E.: 1964, ‘Turbulent Fluctuations in Atmospheric CO2 Concentration over the Vegetated Fields,’ Studies on Oceanography, Div. of Meteorol., Natl. Inst. Agric. Sci. (Japan), pp. 232–237.Google Scholar
  8. Kimball, B. A. and Lemon, E. R.: 1970, ‘Spectra of Air Pressure Fluctuations at the Soil Surface’, J. Geophys. Res. 75, 6771–6777.CrossRefGoogle Scholar
  9. Lemon, E. R., Wright, J. L., and Drake, G. M.: 1969, ‘Photosynthesis Under Field Conditions. XB. Origins of Short-Time CO2 Fluctuations in a Corn Field’, Agron. J. 61, 411–413.CrossRefGoogle Scholar
  10. Murphy, C. E., Jr. and Knoerr, K. B.: 1970, ‘Modelling the Energy Balance Processes of Natural Ecosystems’, Research Report IBP and School of Forestry, Duke University, Durham, N.C. 164 pp.Google Scholar
  11. Okamota, M. and Webb, E. K.: 1970, ‘The Temperature Fluctuations in Stable Stratification’, Quart. J. Roy. Meteorol. Soc. 95, 591–600.CrossRefGoogle Scholar
  12. Perrier, E. R., Robertson, J. M., Millington, R. J., and Peters, D. B.: 1972, ‘Spatial and Temporal Variation of Wind Above and Within a Soybean Canopy’, Agric. Meteorol. 10, 421–442.CrossRefGoogle Scholar
  13. Shaw, R. H., den Hartog, G., King, K. M., and Thurtell, G. W.: 1974, ‘Measurements of Mean Wind Flow and Three-Dimensional Turbulence Intensity Within a Mature Corn Canopy’, Agric. Meteorol. 13, 419–425.CrossRefGoogle Scholar
  14. Silversides,.R. H.: 1974, ‘An Empirical Method for Demonstrating the Influence of Heat Flux on the Shape of Temperature Spectra’, Boundary-Layer Meteorol. 6, 381–386.CrossRefGoogle Scholar
  15. Stewart, D. W. and Lemon, E. R.: 1969, ‘The Energy Budget at the Earth's Surface: A Simulation of Net Photosynthesis of Field Corn,’ U.S. Army ECOM Tech, Rep. 2-68, 1–6. Ft. Huachuca, Arizona. (Avail, from National Technical Information Service, Springfield, Va.)Google Scholar
  16. Uchijima, Z. and Wright, J. L.: 1964, ‘An Experiment Study of Air Flow in a Corn Plant-Air Layer’, Bull. Natl. Inst. Agric. Sci. (Japan) Ser. A 11, 19–66.Google Scholar
  17. Waggoner, P. E., Furnival, G. M., and Reifsnyder, W. E.: 1969, ‘Simulation of the Microclimate in a Forest’, Forest Sci. 15, 37–45.Google Scholar
  18. Weiss, A. and Allen, L. H., Jr.: 1976a, ‘Air Flow Patterns in Vineyard Rows’, Agric. Meteorol. 16, 329–342.CrossRefGoogle Scholar
  19. Weiss, A. and Allen, L. H., Jr.: 1976b, ‘The Flux Angle Distribution of Momentum as Determined by Propeller Anemometer Measurements’, Quart. J. Roy. Meteorol. Soc. 102, 775–779.Google Scholar
  20. Weiss, A. and Allen, L. H., Jr.: 1976c, ‘Vertical and Horizontal Air Flow Above Rows of a Vineyard’, Agric. Meteorol. 17, 433–452.CrossRefGoogle Scholar
  21. de Wit, C. T.: 1965, ‘Photosynthesis of Leaf Canopies’, Versl. Landbouwk. Ondery. 663, 57 pp.Google Scholar

Copyright information

© D. Reidel Publishing Company 1978

Authors and Affiliations

  • R. L. Desjardins
    • 1
  • L. H. AllenJr.
    • 2
  • E. R. Lemon
    • 3
  1. 1.Agrometeorology Research and ServiceChemistry and Biology Research Institute, Agriculture CanadaOttawaCanada
  2. 2.U.S. Department of AgricultureGainesvilleUSA
  3. 3.U.S. Department of AgricultureCornell UniversityIthacaUSA

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