AUTHOR=Li Yuan , Fei Wenyi , Yang Mengsheng , Wang Yingfeng , Du Yanan , Wang Yaomei TITLE=How to realize large-scale outdoor thermal comfort studies? A systematic review based on OTC characterization, methods and research trends JOURNAL=Frontiers in Sustainable Cities VOLUME=7 YEAR=2025 URL=https://www.frontiersin.org/journals/sustainable-cities/articles/10.3389/frsc.2025.1552994 DOI=10.3389/frsc.2025.1552994 ISSN=2624-9634