Summer heat environment in surrounding region of urban rivers

Meteorological field observations were conducted at Am-river in summer to evaluate the effect of urban rivers on microclimate of the adjacent city region. The observation in the river course consists of measurements on velocity, temperature and humidity profiles by using captive balloons and measurements on momentum, heat and vapor fluxes performed on flood plain and water body. The development of internal boundary layers on vegetated flood plain and water surface associated with cooling of the atmosphere were observed. The role of flood plain and water body in heat exchanging process are discussed based on the results of the flux measurements.