Next Generation City Climate Services Using Advanced Weather Models and Emerging Data Sources

In an era increasingly shaped by climate change and progressing urbanisation, the challenges faced by cities have grown more pronounced, impacting the health and well-being of their citizens. Recent record temperatures, declining air quality, and the complex interplay of wind patterns and humidity have emerged as pressing concerns for administrators and citizens alike. This is further exacerbated by the urban heat island (UHI) effect brought about by urbanisation.

As cities expand, they alter the thermal and radiative properties of natural landscapes, creating localised pockets of extreme heat and with altered diurnal temperature cycles. To mitigate this effect, the CityCLIM project brings together a consortium of pilot users, research organisations and industry committed to contributing to the next generation of data-driven climate services. By assimilating data from space and various in-situ data sources into a state-of-the-art weather model capable of real-time forecasting on urban scales, CityCLIM provides tools for administrators to analyse the impact of construction or urban redevelopment projects, for example, as well as alerts, information and personal health-focused services for citizens.CityCLIM is funded by the European Union as a research and innovation action under the Horizon2020 programme.


OHB System AG

Institute for Applied Systems Technology Bremen GmbH

Meteologix AG

Helmholtz Centre for Environmental Research GmbH

University of Valencia

OHB Digital Solutions

Pilot Regions

City of Luxembourg (RTL Luxemburg)

Region of Central Macedonia

City of Valencia

City of Karlsruhe

Project Duration

10/2021 to 09/2024



This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No. 101036814.