Boundary-Layer Meteorology

, Volume 115, Issue 3, pp 409–422

Summer boundary-layer height at the plateau site of Dome’C, antarctica

  • S. Argentini
  • A. Viola
  • A. M. Sempreviva
  • I. Petenko
Article

DOI: 10.1007/s10546-004-5643-6

Cite this article as:
Argentini, S., Viola, A., Sempreviva, A.M. et al. Boundary-Layer Meteorol (2005) 115: 409. doi:10.1007/s10546-004-5643-6

Abstract

Measurements of the mean and turbulent structure of the planetary boundary layer using a sodar and a sonic anemometer, and radiative measurements using a radiometer, were carried out in the summer of 1999–2000 at the Antarctic plateau station of Dome C during a two-month period. At Dome C strong ground-based inversions dominate for most of the year. However, in spite of the low surface temperatures (between −50 and −20 °C), and the surface always covered by snow and ice, a regular daytime boundary-layer evolution, similar to that observed at mid-latitudes, was observed during summertime. The mixed-layer height generally reaches 200–300 m at 1300–1400 LST in high summer (late December, early January); late in the summer (end of January to February), as the solar elevation decreases, it reduces to 100–200 m. A comparison between the mixed-layer height estimated from sodar measurements and that calculated using a mixed-layer growth model shows a rather satisfactory agreement if we assign a value of 0.01–0.02 m s−1 to the subsidence velocity at the top of the mixed layer, and a value of 0.003–0.004 K m−1 to the potential temperature gradient above the mixed layer.

Keywords

Antarctica Mixed layer height Sodar Sonic anemometer 

Copyright information

© Springer 2005

Authors and Affiliations

  • S. Argentini
    • 1
  • A. Viola
    • 1
  • A. M. Sempreviva
    • 1
  • I. Petenko
    • 1
    • 2
  1. 1.Istituto di Scienze dell’Atmosfera e del ClimaConsiglio Nazionale delle RicercheRomaItaly
  2. 2.A. M. Obukhov Institute of Atmospheric PhysicsRussian Academy of SciencesMoscowRussia

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