Skip to main content
SpringerLink
Log in

A case study of temperature fluctuations within and above a wheat field before and after sunset

  • Published:
Boundary-Layer Meteorology Aims and scope Submit manuscript

Abstract

Temperature fluctuations in the stable air layer before and after sunset were measured at 4 heights within and above a wheat field. Large positive temperature fluctuations were frequently observed within the plant canopy. The standard deviations, skewness factors and flatness factors of temperature fluctuations within the canopy showed peculiar time variations, having remarkable positive skewness factors. The occurrence of large positive temperature fluctuations was probably related to the difference of temperature gradients below and above the observation height, i.e., these fluctuations frequently occurred when the temperature gradient above the observation height was greater than that below the observation height. Furthermore, the vertical mixing associated with the penetration of downdrafts from the air layer above the canopy was requisite for the occurrence of the phenomenon.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  • Desjardins, R. L., Allen, L. H. Jr., and Lemon, E. R.: 1978, ‘Variations of Carbon Dioxide, Air Temperature, and Horizontal Wind within and above a Maize Crop’, Boundary-Layer Meteorol. 14, 369–380.

    Google Scholar 

  • Maitani, T. and Seo, T.: 1976, ‘An Off-line Data Acquisition System for Micrometeorological Observations’, Nogaku Kenkyu 55, 215–232 (in Japanese).

    Google Scholar 

  • Maitani, T. and Seo, T.: 1984, ‘Turbulent Transport of Sensible Heat within and above a Wheat Field’, J. Agric. Met. (Tokyo) 39, 297–304 (in Japanese).

    Google Scholar 

  • Maitani, T., Seo, T., and Ohtaki, E.: 1984, ‘The Measurement of Vertical Transports of Sensible Heat within and above a Sorghum Canopy’, J. Agric. Met. (Tokyo) 40, 243–250 (in Japanese).

    Google Scholar 

  • Merry, M. and Panofsky, H. A.: 1976, ‘Statistics of Vertical Motion over Land and Water’, Quart. J. Roy. Meteorol. Soc. 102, 255–260.

    Google Scholar 

  • Wilson, J. D., Word, D. P., Thurtell, G. W., and Kidd, G. E.: 1982, ‘Statistics of Atmospheric Turbulence within and above a Corn Canopy’, Boundary-Layer Meteorol. 24, 495–519.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Institute for Agricultural and Biological Sciences, Okayama University, Kurashiki, Japan

    T. Maitani

  2. 2-72, Kachushimachi, Tsuruoka, Japan

    T. Seo

Authors
  1. T. Maitani
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. T. Seo
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Maitani, T., Seo, T. A case study of temperature fluctuations within and above a wheat field before and after sunset. Boundary-Layer Meteorol 35, 247–256 (1986). https://doi.org/10.1007/BF00123643

Download citation

  • Revised:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00123643

Keywords

Search

Navigation