Evolution of land surface temperature, land use land cover and their relationship: A case study of Maceió, Brazil

IF 6 2区工程技术 Q1 ENVIRONMENTAL SCIENCES Urban Climate Pub Date : 2024-11-01 DOI:10.1016/j.uclim.2024.102199

Michelle Adelino Cerqueira , Ricardo Victor Rodrigues Barbosa , Tiago Peixoto da Silva Lôbo

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Abstract

Land use land cover (LULC) change is a key contributor to land surface temperature (LST) and, consequently, the urban heat island effect. Investigating changes in urban morphology through LULC change and its impact on LST is crucial for urban planning and thermal comfort. In this work, we analyze the time-series evolution of both LST and LULC as well as their relationship in the city of Maceió, the capital of Alagoas, Brazil. We chose MODIS MOD11 as our LST data source and the Dynamic World dataset for near real time LULC mapping. LST time-series were generated for an annual scale, and we applied nonlinear trend analysis on 8-day averaged LST data using the BEAST algorithm. We found that the trend component of daytime LST for Maceió urban area increased 0.80 °C from 2000 to 2021 and, surprisingly, decreased 0.20 °C from 2021 to 2024, while the nighttime LST increased 0.85 °C from 2000 to 2024. In addition, we revealed a decrease in Crops area and an increase in Built Area, which had no impact on daytime or nighttime LST. These results can be used to aid in the creation of a better thermal comfort planning.

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地表温度、土地利用和土地覆盖的演变及其关系：巴西马塞约案例研究

土地利用、土地覆盖（LULC）的变化是导致地表温度（LST），进而导致城市热岛效应的关键因素。研究 LULC 变化引起的城市形态变化及其对 LST 的影响对于城市规划和热舒适度至关重要。在这项研究中，我们分析了巴西阿拉戈斯州首府马塞约市 LST 和 LULC 的时间序列演变及其关系。我们选择 MODIS MOD11 作为 LST 数据源，并使用 Dynamic World 数据集绘制近实时 LULC 地图。我们生成了年尺度的 LST 时间序列，并使用 BEAST 算法对 8 天平均 LST 数据进行了非线性趋势分析。我们发现，从 2000 年到 2021 年，马塞约城区日间 LST 的趋势成分上升了 0.80 °C，而令人惊讶的是，从 2021 年到 2024 年，日间 LST 下降了 0.20 °C，而从 2000 年到 2024 年，夜间 LST 上升了 0.85 °C。此外，我们还发现农作物面积减少，建筑面积增加，但这对昼间或夜间 LST 没有影响。这些结果可用于帮助制定更好的热舒适规划。

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来源期刊

Urban Climate Social Sciences-Urban Studies

CiteScore

9.70

自引率

9.40%

发文量

286

期刊介绍： Urban Climate serves the scientific and decision making communities with the publication of research on theory, science and applications relevant to understanding urban climatic conditions and change in relation to their geography and to demographic, socioeconomic, institutional, technological and environmental dynamics and global change. Targeted towards both disciplinary and interdisciplinary audiences, this journal publishes original research papers, comprehensive review articles, book reviews, and short communications on topics including, but not limited to, the following: Urban meteorology and climate[...] Urban environmental pollution[...] Adaptation to global change[...] Urban economic and social issues[...] Research Approaches[...]