 The study investigates how three-dimensional, 3D, urban morphological parameters, UMPs, impact seasonal and diurnal surface urban heat island, Suhe, intensities in 208 cities in China from 2014 to 2016 using Modi's land surface temperature products. The study found that building height and volume had a more decisive influence on Suhe than building coverage, particularly during the summer diurnal cycle and under dry climatic settings. Additionally, vegetation's capability to regulate Suhe was more potent in dry climates than wet climates and small cities than large cities. The study suggests that urban thermal mitigation should consider climate background and population size when designing strategies for reducing Suhe intensities. This article was authored by Shesong Cao, Yalcai, Minidu, and others.