Badanie czasowo-przestrzennej struktury warunków termicznych terenów miejskich i pozamiejskich na podstawie danych satelitarnych

Investigation of temporal-spatial structure of urban and non-urban surfaces' thermal conditions on the basis of satellite dataŹŹŹ

Summary: The technique of AVHRR/NOAA satellite data processing is presented. The processing results are maps (geometrically corrected images) of surface temperature (Fig. 1) and vegetation index - NDVI (Fig. 2). On the basis of 63 satellite images, the thermal conditions of surfaces are analyzed in the Kraków agglomeration's area (Fig. 3). Urban-industrial heat island is noticeable. Isotherms - obtained by the surface temperature maps transformation - enabled to estimate a thermal contrast that varies during a day and depends on a time of the year (Fig. 4). The greatest differences between urban and non-urban surface temperature appeared at noon in summer season whereas the least ones in the morning. Moreover, a correlation between satellite-derived surface temperature (separately for the night, the morning, the noon and the evening term) and air temperature measured at 2 m & 10 m levels in Kraków-Czyżyny is examined (Fig. 5). Linear regression equations and their determination coefficients (in the 0.93-0.99 range) are defined (Fig. 6).

Słowa kluczowe: ane satelitarne, AVHRR/NOAA, mapy temperatury powierzchni, wskaźnik roślinności NDVI, miejsko-przemysłowa wyspa ciepła, aglomeracja krakowska

Słowa kluczowe (w języku angielskim): atellite data, AVHRR/NOAA, surface temperature maps, vegetation index NDVI, urban-industrial heat island, Kraków agglomeration

Prace Geograficzne, 2009, z. 122, s. 71-79.

Instytut Geografii i Gospodarki Przestrzennej UJ

ISSN 1644-3586

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