Analysis of land surface temperature and NDVI distribution for Budapest using Landsat ETM+ data

Molnár Gergely: Analysis of land surface temperature and NDVI distribution for Budapest using Landsat ETM+ data. In: Acta climatologica, (49-50). pp. 49-61. (2016)

[thumbnail of climatologica_049_050_049-061.pdf]
Preview
Cikk, tanulmány, mű
climatologica_049_050_049-061.pdf

Download (1MB) | Preview

Abstract

Urban areas considerably vary in land coverage, emission of pollutants and anthropogenic heat release from the natural surroundings. As a result, an alteration of meteorological variables (e.g. temperature, wind, moisture) is detected in the cities, which can fundamentally be observed with three methods: in-situ measurements, numerical mesoscale meteorological models and remote sensing products. In this work, a satellite imagery (singlechannel algorithm) technique was utilized to investigate the spatial distribution of land surface temperature (LST) and normalized vegetation index (NDVI) for the capital city of Hungary. The high-resolution thermal infrared band (60 m) of Landsat 7 ETM+ (Enhanced Thematic Mapper Plus) provides a powerful tool to categorize different land cover zones and to determine the thermal properties of land surface. Two dates (2 and 18 August 2014) and 11 Local Climate Zones (LCZs) were selected to take into consideration the progress of vegetation and the dissimilarity of land coverage in LST modification. The results suggest that the presence of vegetation leads to a significant LST reduction. For instance, the thermal contrast between the LCZs of compact midrise (NDVI: 0.15) and dense trees (NDVI: 0.73) passed 40 °C on 02 August, 2014. On average, the LST approached 40 °C in case of three LCZs (compact midrise, compact low-rise, open midrise) and for 9% of the total study area.

Item Type: Article
Journal or Publication Title: Acta climatologica
Date: 2016
Volume: 49-50
ISSN: 0563-0614, 0324-6523
Page Range: pp. 49-61
Language: English
Place of Publication: Szeged
Related URLs: http://acta.bibl.u-szeged.hu/44008/
Uncontrolled Keywords: Földfelszín - hőmérséklet - analízis
Additional Information: Bibliogr.: p. 60-61. ; ill. ; összefoglalás angol nyelven
Subjects: 01. Natural sciences
01. Natural sciences > 01.05. Earth and related environmental sciences
Date Deposited: 2017. Feb. 13. 14:57
Last Modified: 2022. May. 11. 15:17
URI: http://acta.bibl.u-szeged.hu/id/eprint/44527

Actions (login required)

View Item View Item