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Estimation of turbulent heat fluxes and exchange coefficients for heat at Dumont d'Urville, East Antarctica

Published online by Cambridge University Press:  06 May 2004

S. Argentini ,
G. Mastrantonio  and
A. Viola
S. Argentini
Affiliation:
Istituto di Fisica dell' Atmosfera, CNR, via Fosso del Cavaliere, 100, 00133 Roma, Italy
G. Mastrantonio
Affiliation:
Istituto di Fisica dell' Atmosfera, CNR, via Fosso del Cavaliere, 100, 00133 Roma, Italy
A. Viola
Affiliation:
Istituto di Fisica dell' Atmosfera, CNR, via Fosso del Cavaliere, 100, 00133 Roma, Italy
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Abstract

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Simultaneous acoustic Doppler sodar and tethersonde measurements were used to study some of the characteristics of the unstable boundary layer at Dumont d'Urville, Adélie Land, East Antarctica during the summer 1993–94. A description of the convective boundary layer and its behaviour in connection with the wind regime is given along with the frequency distribution of free convection episodes. The surface heat flux has been evaluated using the vertical velocity variance derived from sodar measurements. The turbulent exchange coefficients, estimated by coupling sodar and tethered balloon measurements, are in strong agreement with those present in literature for the Antarctic regions.

Keywords

Antarcticaexchange coefficientsheat fluxessodartethersonde
Type
Papers—Earth Sciences and Glaciology
Information
Antarctic Science , Volume 11 , Issue 1 , March 1999 , pp. 93 - 99
Copyright
© Antarctic Science Ltd 1999