Experimental determination of sensible heat flux over a complex terrain by eddy correlation programme

Abstract

Measurements on instantaneous vertical component of wind and temperature at 4.2 m above ground were made. using Gill propeller anemometer and a thermocouple, over a complex terram at the Indian InstItute of Tropical Meteorology, Pashan, Pune. Daytime hourly samples were taken for 10 and 40 min duration for 9 and 3 days in March 1985 and April 1986 respectively. Sensible heat flux estimated by eddy correlation programme, significant at 1 % probability level. shows large diurnal scatter on averaging the covariances over 10 mm and no significant improvement on Increasing the averaging time to 40 min.