Observation of summer heat environment in vegetated area.

Abstract

Meteorological field observations were performed in the Ara River to study the effect of vegetation (trees and grasses) on urban meteorological environment in summer. In those observations, velocity, temperature and humidity profiles were measured by using lifting balloons. Momentum, heat and vapor fluxes were derived from the observed data. The results reveal the process of heat exchange between the atmosphere and the vegetation. It is found that the atmosphere is cooled by transpiration of both trees and grasses.