Abstract
Simultaneous observations of the profiles of wind velocity and air temperature are conducted at three points in an urban area with a large pond by the kytoons. From the results of observations, convective heat flux from the ground surface to air is calculated by the traverse-method. Heat flux from the pond is negative, that is, cooling. The relation between convective heat transfer coefficient and wind velocity is obtained in extensive built-up areas. Thermal environment is observed, formed at the height of 1 meter from the ground surface in the built-up area and the large pond. New standard effective temperature of the ASHRAE, SET, is calculated as the over all thermal index at the both sites. The effects of a shade tree and wisteria trellis on thermal environment are discussed.
