ON THE GROUND TEMPERATURE PROFILE FOR PASSIVE COOLING APPLICATIONS INBUILDINGS

Several statistical characteristics of the soil temperature in Athens/ Greece are determined through Fourier analysis of a 74 year record (19 17-1990) of soil temperatures at the surface and at various depths and for both bare and short-grass-covered areas. Specifically the soil te mperature patterns are presented along with the Fourier amplitudes and phases of the most important harmonics. It was found that the first t hree harmonics can reproduce most of the observed patterns in soil tem peratures at the surface and at various depths. Finally, the results o f the present analysis are compared with some existing data from other known sets of measurements. Copyright (C) 1996 Elsevier Science Ltd.