Heat island study in the area of rome by integrated use of ERS-SAR and landsat TM

Giulia Abbate

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Abstract

Modifications of natural land cover together with localized industrialization and enormous increase in motor traffic greatly contribute to air pollution and degradation of environmental and climatological quality in urban areas. As concentration of world population in urban areas shows an increasing trend, there is no doubt that climatological elements (i.e. temperature, ventilation, sun/shading, relative humidity) have to be integrated in urban planning and building to improve quality of life. The present study is aimed at contributing to a better understanding of climate characteristics in the "heat and roughness island" of Rome and surrounding rural areas. The satellite point of view (time synchronized dense grid of data over the whole area) allows a double-sided approach: 1) the city as a whole, with its overall interactions with neighboring areas; 2) local features within the city. As for point 1), three Landsat TM images of a large area around Rome (including sea coast, Bracciano lake, Tevere valley and Castelli Romani) for different season and meteorological conditions have been compared for all bands. Effects of interaction with the regional circulation were observed. As for point 2), multitemporal radiometric and texture properties of various land cover types (different types of building, urban fabric and vegetation) have been analysed in nine ERS-1 SAR.PRI images (acquired during 1992 under different meteorological conditions) together with Landsat TM thermal bands and NDVI. The aim is to obtain a classification of urban land-cover to be compared with temperature patterns as derived from TM thermal band. Combination of SAR data with NDVI looks very promising to this purpose.
Original languageEnglish
Pages (from-to)305 - 308
Number of pages4
JournalEuropean Space Agency, (Special Publication) ESA SP
Issue number414 PART 1
Publication statusPublished - 1997
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Aerospace Engineering

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