Analysis of the role of urban vegetation in local climate of Budapest using satellite measurements

Rita Pongracz; Judit Bartholy; Zsuzsanna Dezso; Cathy Fricke

doi:10.1117/12.2240739

12 August 2016 Analysis of the role of urban vegetation in local climate of Budapest using satellite measurements

Rita Pongracz, Judit Bartholy, Zsuzsanna Dezso, Cathy Fricke

Proceedings Volume 9688, Fourth International Conference on Remote Sensing and Geoinformation of the Environment (RSCy2016); 96881J (2016) https://doi.org/10.1117/12.2240739
Event: Fourth International Conference on Remote Sensing and Geoinformation of the Environment, 2016, Paphos, Cyprus

Abstract

Urban areas significantly modify the natural environment due to the concentrated presence of humans and the associated anthropogenic activities. In order to assess this effect, it is essential to evaluate the relationship between urban and vegetated surface covers. In our study we focused on the Hungarian capital, Budapest, in which about 1.7 million inhabitants are living nowadays. The entire city is divided by the river Danube into the hilly, greener Buda side on the west, and the flat, more densely built-up Pest side on the east. Most of the extended urban vegetation, i.e., forests are located in the western Buda side. The effects of the past changing of these green areas are analyzed using surface temperature data calculated from satellite measurements in the infrared channels, and NDVI (Normalized Difference Vegetation Index) derived from visible and near-infrared satellite measurements. For this purpose, data available from sensor MODIS (Moderate Resolution Imaging Spectroradiometer) of NASA satellites (i.e., Terra and Aqua) are used. First, the climatological effects of forests on the urban heat island intensity are evaluated. Then, we also aim to evaluate the relationship of surface temperature and NDVI in this urban environment with special focus on vegetation-related sections of the city where the vegetation cover either increased or decreased remarkably.

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Rita Pongracz, Judit Bartholy, Zsuzsanna Dezso, and Cathy Fricke "Analysis of the role of urban vegetation in local climate of Budapest using satellite measurements ", Proc. SPIE 9688, Fourth International Conference on Remote Sensing and Geoinformation of the Environment (RSCy2016), 96881J (12 August 2016); https://doi.org/10.1117/12.2240739

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KEYWORDS

Vegetation

Satellites

MODIS

Climatology

Infrared radiation

Satellite imaging

Sensors

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