Minimize Land-Sea Breeze

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Introduction

Land-sea breeze is caused by the generally different temperatures of the land and the sea, which produce an across-coast air temperature contrast. During the day the wind blows landwards (sea breeze), and during the night it blows seawards (land breeze). Wind speeds associated with land-sea breeze are typically less than 5 m/s and the off-shore flowing air layer is often less than 100 m deep. Land breeze is often contaminated with stronger and deeper terrain-induced katabatic air flows. The intensity of land-sea breeze circulation is strong when the coastal land is dry and only lightly vegetated (Segal et al., 1988). The land-sea breeze system has several effects, among others, (1) it alters the direction and speed of the atmospheric boundary layer winds, (2) it influences the low-level stratiform and cumuliform clouds, (3) it initiates, suppresses and modifies precipitating convective storms, and (4) it recirculates and traps pollutants released into the air.

References

  • Defant, F., Theorie der Land- und Seewinde, Archiv für Meteorologie, Geophysik, und Bioklimatologie, Vienna, Ser. A, 2-3, 404-425 (1950).
  • Haurwitz, B., Comments on the sea-breeze circulation, J. Meteorol., 4, 1-8 (1947).
  • Pielke, R.A., Mesoscale meteorological modeling, Academic Press, New York, 612 pp. (1984).
  • Rotunno, R., On the linear theory of land and sea breeze, J. Atmos. Sci., 40, 1999-2009 (1983).
  • Segal, M., Avissar, R., McCumber, M.C. & Pielke, R.A., Evaluation of vegetation effects on the generation and modification of mesoscale circulations, J. Atmos. Sci., 45, 2268-2292 (1988).
  • Simpson, J.E., Sea breeze and local winds, Cambridge Univ. Press, New York, 234 pp. (1994).