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Keywords = Porto Alegre four districts

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18 pages, 2362 KiB  
Article
Spatiotemporal Influences of LULC Changes on Land Surface Temperature in Rapid Urbanization Area by Using Landsat-TM and TIRS Images
by Eduardo Andre Kaiser, Silvia Beatriz Alves Rolim, Atilio Efrain Bica Grondona, Cristiano Lima Hackmann, Rodrigo de Marsillac Linn, Pâmela Suélen Käfer, Nájila Souza da Rocha and Lucas Ribeiro Diaz
Atmosphere 2022, 13(3), 460; https://doi.org/10.3390/atmos13030460 - 11 Mar 2022
Cited by 14 | Viewed by 3504
Abstract
The inverse correlation between NDVI and LST is widely known for its long time series. However, when more specific statistical tests were performed, subtle differences in the correlation behavior over time are more clearly observed. In this work, regression analyses were performed between [...] Read more.
The inverse correlation between NDVI and LST is widely known for its long time series. However, when more specific statistical tests were performed, subtle differences in the correlation behavior over time are more clearly observed. In this work, regression analyses were performed between NDVI and LST at intervals of approximately 10 years, quantifying this relationship for an area of transition from vegetation to urban occupation from 1985 to 2018. The removal of vegetation cover (reduction of 51% to 7% in grassland and 14.4% to 0.6% in forest) to occupy impermeable surfaces ( increase of 31% to 91% in urban areas) caused an average LST increase of 4.18 °C when compared to the first and last decades of the historical series. Temporal analysis allowed us to verify the increase in temperature in the four seasons. The largest difference was 6.36 °C between the first and last decade of autumn, 4.40 °C in spring, 4.09 °C in summer, and 2.41 °C in winter. The results also show that LST has a negative correlation with NDVI, especially in urban areas, with an increase in this correlation during the period (1989: R = −0.55; 1999: R = −0.58; 2008: R = −0.59; 2018: R = −0.76). Our study results will help policymakers understand the dynamics of temperature increases by adding scientifically relevant information on the sustainable organization of the urban environment. Full article
(This article belongs to the Special Issue Land Surface and its Interaction with the Atmosphere)
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