Land Surface Temperature and Urban Heat Island Dynamics from 2010 to 2018 Using Landsat Imagery in an Arid Environment: A Case Study in Sunland Park, New Mexico, USA
Abstract
Urbanization significantly impacts land surface temperature (LST) and the characteristics of urban heat islands (UHI). However, the relationship between these factors can be complex, particularly in arid regions where exposed soils and sparse vegetation can lead to exceptionally high daytime temperatures. This study explores how changes in land use and land cover (LULC) related to urbanization affect LST, vegetation conditions, and UHI characteristics in Sunland Park, New Mexico. We analyzed five cloud-free Landsat images from the Landsat-5 TM and Landsat-8 OLI/TIRS satellites, captured in May during the years 2010, 2011, 2013, 2016, and 2018. To map LULC changes, we employed supervised maximum likelihood classification, while the Normalized Difference Vegetation Index (NDVI), emissivity-corrected LST, and a normalized UHI index were calculated to assess daytime thermal patterns on the surface. The overall accuracy of the classification ranged from 85% to 87%, with Kappa coefficients between 0.74 and 0.78. Ov