Understanding temperature variations in mountainous regions: The relationship between satellite-derived land surface temperature and in situ near-surface air temperature

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Abstract

Mountain systems significantly influence both regional and global climates, and are vital for biodiversity, water resources, and economic activities. Many mountainous regions are experiencing more rapid temperature changes than environments at lower elevations. Whilst in situ weather stations offer critical data on near-surface air temperature (Tair) patterns, the lack of high-elevation stations may lead to an underestimation of warming in mountainous regions. Land surface temperature (LST), which has a strong relationship with Tair and can potentially be measured globally by satellites irrespective of extreme terrain, presents an important alternative for comprehensively assessing temperature dynamics. In this study, we review studies on the relationship between satellite-derived LST and in situ Tair, particularly in mountainous regions, by conducting a meta-analysis of the research literature and discussing the factors driving the LST-Tair relationship. Our review reveals several research biases, including the regions that are the focus of studies to date (e.g. hemispheric and continent biases) and the elevation ranges that have in situ Tair data. We highlight the need for further research in mountain environments to better understand the impacts of climate change on these critical regions.
Original languageEnglish
Article number114574
Number of pages19
JournalRemote Sensing of Environment
Volume318
Early online date26 Dec 2024
DOIs
Publication statusEarly online - 26 Dec 2024

Keywords

  • Remote sensing
  • Land surface temperature
  • Near-surface air temperature
  • Mountain climate
  • Elevation-dependent warming

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