Surface Urban Heat Island Assessment of a Cold Desert City: A Case Study over the Isfahan Metropolitan Area of Iran

This study investigates the diurnal, seasonal, monthly and temporal variation of land surface temperature (LST) and surface urban heat island intensity (SUHII) over the Isfahan metropolitan area, Iran, during 2003–2019 using MODIS data. It also examines the driving factors of SUHII like cropland, bu...

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Bibliographic Details
Published in:Atmosphere 2021-10, Vol.12 (10), p.1368
Main Authors: Karimi, Alireza, Mohammad, Pir, Gachkar, Sadaf, Gachkar, Darya, García-Martínez, Antonio, Moreno-Rangel, David, Brown, Robert D.
Format: Article
Language:English
Subjects:
Agricultural land
Albedo
Albedo (solar)
Cities
Cold
Correlation
Daytime
Evapotranspiration
Heat
Heat islands
Islands
Land surface temperature
LST
Metropolitan areas
MODIS
Population
Remote sensing
Rural areas
Satellites
seasonal
semi-arid city
Surface temperature
surface urban heat island
Temperature
Temporal variations
trend
Trends
Urban areas
Urban cool islands
Urban heat islands
Urbanization
Vegetation
Vegetation index
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Summary:This study investigates the diurnal, seasonal, monthly and temporal variation of land surface temperature (LST) and surface urban heat island intensity (SUHII) over the Isfahan metropolitan area, Iran, during 2003–2019 using MODIS data. It also examines the driving factors of SUHII like cropland, built-up areas (BI), the urban–rural difference in enhanced vegetation index (ΔEVI), evapotranspiration (ΔET), and white sky albedo (ΔWSA). The results reveal the presence of urban cool islands during the daytime and urban heat islands at night. The maximum SUHII was observed at 22:30 p.m., while the minimum was at 10:30 a.m. The summer months (June to September) show higher SUHII compared to the winter months (February to May). The daytime SUHII demonstrates a robust positive correlation with cropland and ΔWSA, and a negative correlation with ΔET, ΔEVI, and BI. The nighttime SUHII displays a negative correlation with ΔET and ΔEVI.
ISSN:2073-4433
2073-4433
DOI:10.3390/atmos12101368