Contrasting frequency of global canopy and surface urban heat Island
文献类型：期刊论文
| 作者 | Fu, Huyan4; Wen, Jianghai4; Liu, Zihan2,3; Li, Jiufeng5; Li, Jiaxi4; Chen, Zhiru1 |
| 刊名 | SUSTAINABLE CITIES AND SOCIETY
 |
| 出版日期 | 2025-10-01 |
| 卷号 | 133页码:106857 |
| 关键词 | Land surface temperature Near-surface air temperature Surface urban heat island Canopy urban heat island Urban heat island frequency Spatial variations |
| ISSN号 | 2210-6707 |
| DOI | 10.1016/j.scs.2025.106857 |
| 产权排序 | 3 |
| 文献子类 | Article |
| 英文摘要 | The frequency of urban heat island (UHI) is a critical metric for assessing the temporal dynamics of urban heat islands and holds significant value for mitigation strategies. The investigation of the frequency of canopy UHI and surface UHI (CUHIF and SUHIF) is of great importance, as it represents different aspects of urban thermal environments. However, studies examining global CUHIF and SUHIF variations remain limited, and the mechanisms and relative contributions of various driving factors to these two types of heat island frequencies are poorly understood. This study calculated CUHIF and SUHIF for 1162 cities worldwide using global near-surface air temperature (Ta) and seamless land surface temperature (LST) datasets. The UHI frequency calculation thresholds were defined using global mean UHI intensity, specifically 0.5 K for canopy UHI and 1.0 K for surface UHI. The contributions of background climate (BGC), surface properties (SUP), and overall urban metric (OUM) were evaluated using the LightGBM model and SHAP algorithm. Results show that global daytime CUHIF and SUHIF are 72 and 217 days, respectively, whereas the nighttime values are 92 and 161 days. The tropical regions exhibit the highest daytime CUHIF and SUHIF (91 and 298 days), while arid regions have the highest nighttime values (135 and 200 days). The background climate exerts a dominant influence on daytime CUHIF and SUHIF (38% and 45%, respectively), while nighttime UHI frequencies are influenced by a combination of background climate and surface properties (52% and 36%, respectively). Meanwhile, CUHIF and SUHIF reach their annual maximums in summer and minima in winter. These findings enhance understanding of UHI frequency patterns and drivers, providing scientific evidence for mitigation strategies. |
| URL标识 | 查看原文 |
| WOS关键词 | 1 KM RESOLUTION ; TEMPERATURE ; CLIMATE ; DATASET ; WAVES ; RISK |
| WOS研究方向 | Construction & Building Technology ; Science & Technology - Other Topics ; Energy & Fuels |
| 语种 | 英语 |
| WOS记录号 | WOS:001592827400001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/217433]  |
| 专题 | 资源与环境信息系统国家重点实验室_外文论文 |
| 通讯作者 | Liu, Zihan |
| 作者单位 | 1.Yunnan Univ, Inst Int Rivers & Ecosecur, Kunming 650500, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China; 3.Anhui Univ, Sch Artificial Intelligence, Hefei 230601, Peoples R China; 4.Yunnan Univ, Sch Earth Sci, Kunming 650500, Peoples R China; 5.Nanjing Univ, Int Inst Earth Syst Sci, Jiangsu Prov Key Lab Geog Informat Sci & Technol, Nanjing 210023, Jiangsu, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Fu, Huyan,Wen, Jianghai,Liu, Zihan,et al. Contrasting frequency of global canopy and surface urban heat Island[J]. SUSTAINABLE CITIES AND SOCIETY,2025,133:106857. |
| APA | Fu, Huyan,Wen, Jianghai,Liu, Zihan,Li, Jiufeng,Li, Jiaxi,&Chen, Zhiru.(2025).Contrasting frequency of global canopy and surface urban heat Island.SUSTAINABLE CITIES AND SOCIETY,133,106857. |
| MLA | Fu, Huyan,et al."Contrasting frequency of global canopy and surface urban heat Island".SUSTAINABLE CITIES AND SOCIETY 133(2025):106857. |
入库方式： OAI收割
来源：地理科学与资源研究所
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