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Urban Development

Feature Image: Urban footprint Delhi - Credit: DLR (Source)

Urban areas are expanding rapidly, bringing a multitude of challenges such as uncontrolled urban sprawl, increased environmental pressure, and rising inequalities. Monitoring these changes and ensuring that urban development aligns with the Sustainable Development Goals (SDGs) requires accurate and timely data. This data is essential for tracking progress, making informed policy decisions, and supporting sustainable city planning. However, collecting this information from the ground is resource-intensive, and traditional methods often lack the resolution and timeliness required for effective decision-making.

Earth Observation (EO) technologies, particularly those provided by satellite data, offer a powerful solution for monitoring urban development. EO enables stakeholders to track key indicators related to urban growth, environmental impact, and sustainability providing continuous data updates. Tools developed by ESA-funded projects such as Urban TEP and IdeaAtlas specifically address the needs of cities, urban planners by offering dedicated platforms to process EO data that support the computing of related information such as land use change, air quality, heat islands, map and characterisation the spatial extent of slums. Through advanced analytics and AI-driven models, these platforms transform satellite data into actionable insights, supporting cities in their reporting obligations under SDG 11—"Sustainable Cities and Communities."

Key examples  

Urban TEP

  • Urban Growth Monitoring: Using Urban TEP tools, urban planners can monitor land-use changes and detect urban sprawl in near real-time. This information is crucial for managing unplanned urban growth and ensuring that developments are aligned with sustainability goals.
  • Heat Island Mapping: Urban TEP also provides a tool for monitoring heat islands in urban areas, helping cities understand where excessive heat may pose health risks, particularly in densely populated areas. This insight allows for targeted interventions, such as increasing urban green spaces or adjusting city planning strategies to mitigate these effects.
  • Air Quality & Pollution Monitoring: Urban TEP leverage satellite data to track pollutants over time. This capability is essential for cities aiming to improve air quality in line with SDG targets (SDG 11.6), providing real-time data to assess the impact of policies and infrastructure changes on pollution levels.

IdeaAtlas

  • Characterise informal settlements: The "Slum Extent and Characterisation Map" is an AI-driven tool using EO data to identify and map slum areas in Nairobi. It provides detailed insights on the spatial extent, density, and structure of informal settlements, supporting local governments and NGOs in resource allocation and urban planning. This map allows tracking of changes over time, aiding in the monitoring of SDG 11.1.1 progress. With interactive layers, stakeholders can access specific data points for targeted interventions. The tool is validated through local stakeholder feedback, ensuring accuracy and relevance for sustainable urban development.

Further resources  

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