Heat Analysis
We identify urban heat islands, highly exposed areas and priority zones for greening, de-sealing, shading and other climate adaptation measures.
Satellite data for greener, climate-resilient cities
Blue 4 Green Earth Observation for a sustainable future
Our analyses help municipalities steer maintenance, planning and climate adaptation more precisely, efficiently and transparently.
About B4G
Blue4Green turns satellite data into actionable insights for cities.
We support municipalities, public authorities and planners in managing urban green and blue spaces in a climate-resilient, efficient and sustainable way.
To do this, we combine Earth observation data, local geoinformation and environmental indicators into clear maps, overviews and decision-making tools. This makes it possible to identify where urban heat islands are emerging, which green spaces are under drought stress, where irrigation is needed, which urban areas would benefit from more shade, and how vegetation is changing across the urban environment.
Blue4Green was first developed as part of a feasibility study co-funded by the European Space Agency (ESA) and was subsequently further supported during the demonstration phase. In both project phases, pilot cities from Europe and the Middle East were actively involved. Their concrete challenges, requirements and practical municipal experience formed the basis for the development of our services.
Blue4Green provides decision-making support for urban heat analysis, water quality, shade analysis, tree canopy monitoring, tree mapping, irrigation management, vegetation stress, urban vegetation loss, ecological connectivity, resilience planning and green roof potential. In doing so, we also help cities proactively address requirements such as the EU Nature Restoration Law.
Our aim is not only to make data visible, but to make it usable for municipal practice: clear, application-oriented and ready to use.
For greener, more resilient and more liveable cities – data-driven and satellite-based.
Blue4Green Intelligence From Satellite Data
B4G turns satellite data into practical insights for cities: providing map-based analyses of heat stress, shading, urban green space vitality, green roof potential, irrigation needs, water monitoring and tree mapping. The platform helps municipalities detect environmental changes across the urban area, plan measures more precisely and use available resources more efficiently.
Through the demo access, you can explore selected applications directly in the portal. For regular access, simply register an account and select the relevant Earth observation services via our platform. If needed, we support your team with a free webinar to help you get started.
Test the portal without registration!
Explore maps, data and analysis features directly through the demo access.
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Water Monitoring
We monitor key indicators of surface water quality, including chlorophyll-a concentration, viewing depth, turbidity, algae growth, algal blooms and water temperature. This supports cities and municipalities in continuously observing, assessing and sustainably managing their water bodies.
Shading Analysis
We identify shaded and highly heat-exposed areas. This enables cities to assess where existing shading already provides relief and where additional shading measures would be most effective.
Irrigation Management
We identify drought stress and seasonal changes in urban vegetation. This enables cities to plan irrigation measures more precisely, use water resources more efficiently and prioritise the most affected areas.
Resilience Analysis
We provide timely insights into the vitality, growth and vegetation period of urban green spaces. This enables cities to identify which green structures remain resilient even under adverse weather conditions and use these insights for maintenance, adaptation and the planning of new green spaces.
Tree Mapping
We detect individual trees using high-resolution terrain and surface models, precisely locate tree positions and automatically delineate tree crowns. This helps municipalities create and update tree inventories, calculate canopy cover, and better plan and document measures.
Urban Green Tracker
We monitor urban green spaces and tree canopy cover over time and document changes and losses in urban greenery. This provides municipalities with a reliable basis for planning, reporting and measures related to the EU Nature Restoration Regulation.
Ecological Connectivity
We analyse how well green spaces, habitats and tree structures are connected across urban areas. This enables municipalities to strengthen ecological corridors, identify barriers and plan measures to support biodiversity more effectively.
Green Roof Potential
We identify suitable roof areas for greening measures and assess their suitability based on roof slope. This enables municipalities and planning offices to map potential areas, prioritise measures and prepare targeted green roof programmes – also in the context of the EU Nature Restoration Law, helping to make cities greener and more resilient.