Satellite and Ground-Based Sensors for the Urban Heat Island Analysis in the City of Rome

Remote Sensing

Roberto Fabrizi¹  Stefania Bonafoni¹ 

[1] Department of Electronic and Information Engineering, University of Perugia, via G. Duranti 93, 06125 Perugia, Italy; E-Mail:

关键词: Urban Heat Island;    satellite remote sensing;    weather stations;    air temperature;   

DOI  :  10.3390/rs2051400

来源: mdpi

【 摘 要 】

In this work, the trend of the Urban Heat Island (UHI) of Rome is analyzed by both ground-based weather stations and a satellite-based infrared sensor. First, we have developed a suitable algorithm employing satellite brightness temperatures for the estimation of the air temperature belonging to the layer of air closest to the surface. UHI spatial characteristics have been assessed using air temperatures measured by both weather stations and brightness temperature maps from the Advanced Along Track Scanning Radiometer (AATSR) on board ENVISAT polar-orbiting satellite. In total, 634 daytime and nighttime scenes taken between 2003 and 2006 have been processed. Analysis of the Canopy Layer Heat Island (CLHI) during summer months reveals a mean growth in magnitude of 3–4 K during nighttime and a negative or almost zero CLHI intensity during daytime, confirmed by the weather stations.

【 授权许可】

CC BY   
© 2010 by the authors; licensee MDPI, Basel, Switzerland.