Boundary-Layer Meteorology

, Volume 47, Issue 1–4, pp 71–84 | Cite as

Spectra of surface wind speed and air temperature over the ocean in the mesoscale frequency range in JASIN-1978

  • Hiroshi Ishida


Based on the data from an array of buoys during the JASIN-1978 field experiment made in an area northwest of Scotland, power spectra of surface wind speed and air temperature over the ocean in the mesoscale frequency range were studied. The averaged composite spectrum of wind speed for the whole period shows the existence of a spectral gap in the frequency range from 10−4 to 5 × 10−3 Hz. However, significant peaks in this range are often seen in particular spectra under certain weather conditions. Mesoscale spectral peaks of wind speed occur in 14 segments of the data record, approximately 10% of the total duration of the observations. In 4 of these segments, the mesoscale spectral peaks of both wind speed and air temperature occurred simultaneously. Several wave patterns of mesoscale atmospheric disturbances when mesoscale spectral peaks were seen are derived from phase differences between buoys. Significant mesoscale peaks in spectra appear in relatively strong winds and unstable or near-neutral atmospheric conditions, and none in stable atmospheric conditions. A criterion of wind speed and atmospheric stability is found for the mesoscale spectral peak appearance.


Wind Speed Power Spectrum Weather Condition Field Experiment Phase Difference 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Agee, E. M. and Chen, T. S.: 1973, ‘A Model for Investigating Eddy Viscosity Effects on Mesoscale Cellular Convection’, J. Atmos. Sci. 30, 180–189.Google Scholar
  2. Båth, M.: 1974, Spectral Analysis in Geophysics, Elsevier, Amsterdam, 563 pp.Google Scholar
  3. Burt, W. V., Cummings, T., and Paulson, C. A.: 1974, ‘The Mesoscale Wind Field Over the Ocean’, J. Geophys. Res. 79, 5625–5632.Google Scholar
  4. Burt, W. V., Crew, H., and Poole, S. L.: 1975, ‘Evidence for Roll Vortices Associated with a Land Breeze’, J. Marine Res. 33, 61–68.Google Scholar
  5. Fiedler, F. and Panofsky, H. A.: 1970, ‘Atmospheric Scales and Spectral Gaps’, Bull. Amer. Meteorol. Soc. 51, 1114–1119.Google Scholar
  6. Halpern, D.: 1974, ‘Summertime Surface Diurnal Period Winds Measured Over an Upwelling Region Near the Oregon Coast’, J. Geophys. Res. 79, 2223–2230.Google Scholar
  7. Hess, G. D. and Clarke, R. H.: 1973, ‘Time Spectra and Cross-Spectra of Kinetic Energy in the Planetary Boundary Layer’, Quart. J. Roy. Meteorol. Soc. 99, 130–153.Google Scholar
  8. Ishida, H., Burt, W. V., and Mitsuta, Y.: 1984, ‘The Effects of Mesoscale Convective Cells on the Surface Wind Field Over the Ocean’, Boundary-Layer Meteorol. 29, 75–84.Google Scholar
  9. Ishida, H.: 1986, ‘Mesoscale Spatial and Temporal Variability of Meteorological Observations From an Array of Buoys in JASIN-1978’, Boundary-Layer Meteorol. 37, 149–165.Google Scholar
  10. Kelly, R. D.: 1984, ‘Horizontal Roll and Boundary-Layer Interrelationships Observed Over Lake Michigan’, J. Atmos. Sci. 41, 1816–1826.Google Scholar
  11. LeMone, M. A.: 1973, ‘The Structure and Dynamics of Horizontal Roll Vortices in the Planetary Boundary Layer’, J. Atmos. Sci. 30, 1077–1091.Google Scholar
  12. Millard, R. C.: 1968, ‘Wind Measurements From Buoys: A Sampling Scheme’, Ref. 68–68, 34 pp., Woods Hole Oceanogr. Inst., Woods Hole, Massachusetts.Google Scholar
  13. Mitsuta, Y. and Fujitani, T.: 1974, ‘Direct Measurement of Turbulent Fluxes on a Cruising Ship’, Boundary-Layer Meteorol. 6, 203–217.Google Scholar
  14. O'Brien, J. J. and Pillsbury, R. D.: 1974, ‘A Note on Rotary Wind Spectrum in a Sea Breeze Regime’, J. Atmos. Sci. 13, 820–825.Google Scholar
  15. Oort, A. H. and Taylor, A.: 1969, ‘On the Kinetic Energy Spectrum Near the Ground’, Mon. Wea. Rev. 97, 623–636.Google Scholar
  16. Overland, J. E. and Wilson, J. G.: 1984, ‘Mesoscale Variability in Marine Winds at Mid-Latitude’, J. Geophys. Res. 89, 10,599–10,614.Google Scholar
  17. Panofsky, H. A.: 1969, ‘Spectra of Atmospheric Variables in the Boundary Layer’, Radio Sci. 4, 1101–1109.Google Scholar
  18. Pierson, W. J.: 1983, ‘The Measurement of the Synoptic Scale Wind Over the Ocean’, J. Geophys. Res. 88, 1683–1708.Google Scholar
  19. Pollard, R. T., Guymer, T. H., and Taylor, R. K.: 1983, ‘Summary of the JASIN-1978 Field Experiment’, Phil. Trans. Roy. Soc. London A308, 221–230.Google Scholar
  20. Pond, S., Phelps, G. T., Paquin, J. E., McBean, G., and Stewart, R. W.: 1971, ‘Measurements of Turbulent Fluxes of Momentum, Moisture and Sensible Heat Over the Ocean’, J. Atmos. Sci. 28, 901–917.Google Scholar
  21. Smedman-Högström, A. and Högström, U.: 1975, ‘Spectral Gap in Surface-Layer Measurements’, J. Atmos. Sci. 32, 340–350.Google Scholar
  22. Thomson, M. R.: 1979, ‘The Wind Speed Spectrum in an Industrial Environment or Does the Spectral Gap Exist’, Rept. No. ARL/STRUC Note 457, Aeronautical Research Laboratories, Melbourne, Australia.Google Scholar
  23. Van der Hovan, I.: 1957, ‘Power Spectrum of Horizontal Wind Speed in the Frequency Range From 0.0007 to 900 Cycles Per Hour’, J. Meteorol. 14, 160–164.Google Scholar
  24. Weinstock, J.: 1980, ‘A Theory of Gaps in the Turbulence Spectra of Stably Stratified Shear Flow’, J. Atmos. Sci. 37, 1542–1549.Google Scholar
  25. Weller, R. A., Payne, P. E., Large, W. G., and Zenk, W.: 1983, ‘Wind Measurements From an Array of Ocenaic Moorings and From F/S Meteor During JASIN-1978’, J. Geophys. Res. 88, 9689–9705.Google Scholar

Copyright information

© Kluwer Academic Publishers 1989

Authors and Affiliations

  • Hiroshi Ishida
    • 1
  1. 1.Department of Nautical SciencesKobe University of Mercantile MarineHyogoJapan

Personalised recommendations