Modern urban climatology is a part of boundary-layer climatology with a focus on the urban effects on the atmosphere. The best known of these effects is the urban heat island (UHI), which has been a subject of study for more than 200 years and may be categorised into air, surface and substrate types. Progress on this topic has occurred in various phases associated with theoretical developments, improvements in technology (instruments and computing) and study design, to isolate the causative drivers. The history of the field can be categorised into response-based (descriptive) and process-based (analytic) periods associated with hypothesis generation and testing, respectively. Myrup’s paper on simulating the UHI, published in 1969, is at the forefront of this shift in approach and is the first application of numerical modelling to the topic. Its computational methods place the UHI within the context of the surface energy budget and the exchanges of energy, urban characteristics, and the substrate as well as overlying air. The paper is a classic that had considerable impact on the approach that geographical climatology took to examining the UHI; however, it is not without its limitations Careful reading of Myrup's work provides insights into how the field has evolved in the last 50 years. In particular the recurring issues associated with conceputalising the urban thermal effect and challenge of comparing models results with field observations. Remarkably, key urban climate questions on how to cool cities, how to plan cities for future climate, and the factors that impact UHI are still being studied, albeit with more sophisticated models. A numerical model of the urban heat island is part of a rich literature on the UHI that illustrates the development of the urban climate science that deserves to be read and cited.

现代城市气候学是边界层气候学的一部分，重点关注城市对大气的影响。这些影响中最著名的是城市热岛 (UHI)，它已成为 200 多年研究的主题，可分为空气、地表和底物类型。在与理论发展、技术改进（仪器和计算）和研究设计相关的各个阶段，这一主题取得了进展，以隔离致病驱动因素。该领域的历史可以分为分别与假设生成和检验相关的基于响应（描述）和基于过程（分析）的时期。Myrup 于 1969 年发表的关于模拟 UHI 的论文处于这种方法转变的最前沿，并且是数值建模对该主题的首次应用。其计算方法将 UHI 置于地表能量收支和能量交换、城市特征、基质以及上覆空气的背景下。该论文是一部经典著作，对地理气候学研究 UHI 的方法产生了相当大的影响；然而，它并非没有局限性 仔细阅读 Myrup 的著作，可以深入了解该领域在过去 50 年中的发展历程。特别是与将城市热效应概念化相关的反复出现的问题以及将模型结果与现场观测进行比较的挑战。值得注意的是，关于如何为城市降温、如何为未来气候规划城市以及影响 UHI 的因素等关键城市气候问题仍在研究中，尽管模型更为复杂。