n this paper we present a series of workshops to develop clear definitions and requirements of AUDT, and support in channeling the different digital twin developments for weather and climate studies and urban development. Atmospheric and urban digital twins (AUDTs) are two emerging technologies with the potential to revolutionize the way we understand and manage our cities. The primary outcome of this project focuses on the development of a white paper which emphasizes the potential applications of integrating atmospheric and urban digital twins in urban environments. AUDTs are real-time virtual representations of physical, environmental, and social systems, by providing 3D (three-dimensional) visualization, AR (augmented reality), virtual city model, and prediction capabilities. Combining these two technologies can transformatively integrate multidimensional data sources and drastically enhance the understanding of interactions between natural, physical, cyber, and social systems within cities.

The secondary stage of this project is to engage academic and broader stakeholders in the discussion of AUDTs, allowing them to share their visions, perspectives, and experiences. This is done through a series of online workshops and topical subgroups. Participants in these groups include representatives of different sectors and stakeholders with an interest in using AUDTs to enhance their understanding of the urban environment and inform urban planning decisions. By combining ADTs and UDTs, scholars, decision-makers, and stakeholders can better comprehend the effects of climate change and urban development on air quality, water supply, and other factors of the built environment. This knowledge can then be used to inform collective planning and evidence-based decision-making, leading to more efficient and sustainable urban development.