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  • SENSIBLE AND LATENT HEAT FLUXES AND TEMPERATURE GRADIENTS DEDUCED FROM SONIC ANEMOMETER - THERMOMETER AND RADIOMETRIC DATA OBTAINED DURING THE VITH EEC CAMPAIGN AT FOS - FRANCE

Abstract

A three-dimensional ultrasonic anemometer - thermometer and radiometers were installed at a distance of 1 km from the Berre pond shore during the VIth European Air Pollution Measuring Campaign near Fos, France, in June 1983. Twenty seconds and thirty minutes averages and correlation products of micrometeorological variables have been calculated in real time after correction of the temperature for distorsions due to the wind. These data were then transferred to an IBM compatible magnetic tape. The energy balance approach has then been used to determine vertical sensible and latent heat fluxes in the surface layer. Some outstanding features in the ten-day evolution of the parameters are shown and discussed. The first eight days were characterized by a land - sea breeze regime and the fraction of latent heat in the apparent (sonic) vertical flux mounted up to 30 W/m**2. A strong and dry wind (Mistral) blew continuously during the last two days and the humidity correction resulted to be relatively low. The sensible heat fluxes were used for evaluating temperature gradients by means of the Monin-Obukhov (for daytime data) and Stull's (for night time data) methods.

Additional information

Authors: CIESLIK S, JRC ISPRA ESTAB. (ITALY);HASENJAEGER H JRC ISPRA ESTAB. (ITALY), JRC ISPRA ESTAB. (ITALY)
Bibliographic Reference: EUR 9828 EN (1985) MF, 35 P., BFR 150, BLOW-UP COPY BFR 200, EUROFFICE, LUXEMBOURG, POB 1003
Availability: Can be ordered online
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