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Measuring Heat Flux and Structure Functions of Temperature Fluctuations with an Acoustic Doppler Sodar

A. WeillCentre de Recherches en Physique de L'Environment Terrestre et Planetaire, CNET-CNRS, 92131 ISSY-les-Moulineaux, France

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C. KlapiszCentre de Recherches en Physique de L'Environment Terrestre et Planetaire, CNET-CNRS, 92131 ISSY-les-Moulineaux, France

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B. StraussCentre de Recherches en Physique de L'Environment Terrestre et Planetaire, CNET-CNRS, 92131 ISSY-les-Moulineaux, France

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F. BaudinCentre de Recherches en Physique de L'Environment Terrestre et Planetaire, CNET-CNRS, 92131 ISSY-les-Moulineaux, France

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C. JaupartCentre de Recherches en Physique de L'Environment Terrestre et Planetaire, CNET-CNRS, 92131 ISSY-les-Moulineaux, France

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P. Van Grunderbeeck73-77 rue de Sèvres, 92100 Boulogne, France

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J. P. Goutorbe73-77 rue de Sèvres, 92100 Boulogne, France

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Abstract

The vertical velocity variance during convective activity was measured with an acoustic Doppler sounder. Here we show that this technique provides measurement of the heat flux profile in the well-mixed surface layer and gives a reference height h′ related to the inversion height ZI during the mornings.

The paper also shows that the structure function of temperature fluctuations CT2 can be obtained by these measurements using the Kaimal et al. (1976) formula.

Abstract

The vertical velocity variance during convective activity was measured with an acoustic Doppler sounder. Here we show that this technique provides measurement of the heat flux profile in the well-mixed surface layer and gives a reference height h′ related to the inversion height ZI during the mornings.

The paper also shows that the structure function of temperature fluctuations CT2 can be obtained by these measurements using the Kaimal et al. (1976) formula.

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