A measurement of surface thermal property parameter with a field observation and a experiment in artificial meteorological chamber

Abstract

The heat island phenomenon, in which urban temperature is higher than that of the surrounding rural area, has been recognized for many years. One of the cause is the thermal property of urban fabric which restore in the daytime and release at night more heat than rural fabric. There are thermal conductivity λ, heat capacity C and density ρ which is related to heat input/output mechanism. In this study we measure thermal property parameter μ(=√Cρλ) of asphalt and soil with tree method: One is an experiment in the artificial meteorological camber and others are field observations. Results show that μ of asphalt is longer than that of soil.