ASSESSMENT OF SPATIAL AND TEMPORAL DISTRIBUTION OF URBAN HEAT ISLANDS (UHI) IN SEMI-ARID CLIMATE

IF 1 4区环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES Journal of Environmental Engineering and Landscape Management Pub Date : 2023-02-09 DOI:10.3846/jeelm.2023.18482

Nidal M. Hussein, Mohammed N. Assaf

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Abstract

An urban heat island phenomenon has increased in the last decades due to rapid urbanization, resulting in a significant impact on local climate. In this study, remote sensing data was used to analyze Spatiotemporal patterns of Urban Heat Island Intensity (UHII) over a 20 years period in a semi-arid climate area. The relationship between the Land Surface Temperature (LST), vegetation and Land Cover Types (LCTs) were examined. The relation between the UHII and its driving factors (different LCTs and meteorological conditions) was analyzed. Analysis of 8-day daytime and nighttime LST data acquired from MODerate-resolution Imaging Spectroradiometer (MODIS) shows that Amman has a significant UHII in both daytime and night time. The results show a negative correlation between the LST and vegetation indicators and between the UHII and the wind speed average, indicating a positive correlation between the UHII and temperature. Vegetation has been proven to significantly reduce LST, mainly in the daytime, due to its cooling effect that results from the transpiration process and shadow effect.

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半干旱气候下城市热岛时空分布评价

在过去的几十年里，由于快速的城市化，城市热岛现象有所增加，对当地气候产生了重大影响。利用遥感数据分析了半干旱气候区近20 a城市热岛强度的时空变化特征。研究了地表温度(LST)与植被和土地覆被类型之间的关系。分析了UHII与其驱动因子(不同lts和气象条件)的关系。利用MODIS中分辨率成像光谱仪(moderate resolution Imaging Spectroradiometer) 8 d白天和夜间的地表温度数据分析表明，安曼在白天和夜间都有显著的UHII。结果表明，地表温度与植被指标、UHII与风速平均呈负相关，而UHII与气温呈正相关。植被已被证明可以显著降低地表温度，主要是在白天，这是由于其蒸腾过程和阴影效应产生的冷却作用。

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来源期刊

Journal of Environmental Engineering and Landscape Management 环境科学-环境科学

CiteScore

1.90

自引率

7.70%

发文量

审稿时长

>12 weeks

期刊介绍： The Journal of Environmental Engineering and Landscape Management publishes original research about the environment with emphasis on sustainability.