h-index: 18     i10-index: 25

Monitoring Land Surface Temperature (LST) Changes in Northern Alaska's Permafrost Regions Using MODIS Data

Document Type : Original Research Article

Authors

1 Department of Civil Engineering, Southern Illinois University Edwardsville (SIUE), Edwardsville, IL, USA

2 Department of Data Science, Maryville University, St. Louis, MO, USA

Abstract
This study investigates multiannual variations in land surface temperature (LST) across four representative permafrost regions in northern Alaska—Prudhoe Bay, Barrow, the Brooks Range, and the Yukon Flats—to identify short-term surface warming trends. MODIS Terra MOD11A2 V6.1 data were processed using the Google Earth Engine (GEE) platform to compute annual mean LST values for the period 2020–2025. Warming rates (°C/year) were quantified through linear regression analysis. The results reveal a consistent regional warming pattern, with positive temperature trends observed at all sites. Among the studied regions, the Yukon Flats exhibited the most pronounced warming, reaching positive LST values of approximately +1 °C by 2025. Gradual warming was also detected in the coastal regions of Barrow (approximately −8 °C in 2025) and Prudhoe Bay (approximately −6 °C in 2025). These findings demonstrate that the integration of MODIS data with GEE provides an accurate and efficient framework for monitoring regional permafrost thermal dynamics and underscores the importance of remote sensing in evaluating climate change impacts on ground stability in Alaska.

Graphical Abstract

Monitoring Land Surface Temperature (LST) Changes in Northern Alaskas Permafrost Regions Using MODIS Data

Keywords

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OPEN ACCESS

©2026 The author(s). This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit: http://creativecommons.org/licenses/by/4.0/

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Volume 7, Issue 3
Summer 2026
Pages 91-99

  • Receive Date 19 November 2025
  • Revise Date 13 December 2025
  • Accept Date 22 December 2025