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  4. Spatio-Temporal Relationship between Land Cover and Land Surface Temperature in Urban Areas: A Case Study in Geneva and Paris
 
research article

Spatio-Temporal Relationship between Land Cover and Land Surface Temperature in Urban Areas: A Case Study in Geneva and Paris

Ge, Xu
•
Mauree, Dasaraden  
•
Castello, Roberto  
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2020
ISPRS International Journal of Geo-Information

Currently, more than half of the world’s population lives in cities, which leads to major changes in land use and land surface temperature (LST). The associated urban heat island (UHI) effects have multiple impacts on energy consumption and human health. A better understanding of how different land covers affect LST is necessary for mitigating adverse impacts, and supporting urban planning and public health management. This study explores a distance-based, a grid-based and a point-based analysis to investigate the influence of impervious surfaces, green area and waterbodies on LST, from large (distance and grid based analysis with 400 m grids) to smaller (point based analysis with 30 m grids) scale in the two mid-latitude cities of Paris and Geneva. The results at large scale confirm that the highest LST was observed in the city centers. A significantly positive correlation was observed between LST and impervious surface density. An anticorrelation between LST and green area density was observed in Paris. The spatial lag model was used to explore the spatial correlation among LST, NDBI, NDVI and MNDWI on a smaller scale. Inverse correlations between LST and NDVI and MNDWI, respectively, were observed. We conclude that waterbodies display the greatest mitigation on LST and UHI effects both on the large and smaller scale. Green areas play an important role in cooling effects on the smaller scale. An increase of evenly distributed green area and waterbodies in urban areas is suggested to lower LST and mitigate UHI effects.

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Type
research article
DOI
10.3390/ijgi9100593
Author(s)
Ge, Xu
Mauree, Dasaraden  
Castello, Roberto  
Scartezzini, Jean-Louis  
Date Issued

2020

Published in
ISPRS International Journal of Geo-Information
Volume

9

Issue

10

Start page

1

End page

25, 593

Subjects

green urban infrastructure

•

satellite imagery

•

impervious surface

•

land surface temperature

•

urban heat islands

•

urban waterbodies

Note

This is an open access article distributed under the Creative Commons Attribution License.

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LESO-PB  
Available on Infoscience
October 13, 2020
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/172432
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