Analysing the thermal conditions of historic buildings in Cyprus using archive Landsat satellite data and Google Earth Engine big data cloud platform

Abstract

This paper presents the preliminary results of an analysis regarding the thermal conditions of the environment that surrounds two historic clusters in Nicosia and Limassol Districts (Cyprus). This investigation was accomplished by exploiting Landsat 7 ETM+ and Landsat 8 LDCM sensors. A multitemporal analysis from 2013 onwards over these two clusters was performed using the Google Earth Engine big data cloud platform, as well as the ENVI software for the calibration and analysis of the images. In total, 79 Landsat 7 ETM+ and 70 Landsat 8 LDCM images were downloaded and processed. Images were radiometrically and geometrically corrected, converting thus the Digital Numbers to Brightness Temperature in Kelvin (K). Spatial analysis was further processed to create average seasonal and other temporal statistics.