Green Island: UHI AI Detection

    🏆 Hackathon Winner • Techphilia 2025

    Urban Heat Island Detection & Mitigation

    AI-powered geospatial platform analyzing 30+ years of satellite data to detect, visualize, and mitigate Urban Heat Islands in Patna

    6.88°C
    Temperature Rise
    1990-2022
    30+
    Satellite Imagery
    Years Analyzed
    50+
    Weather Stations
    Real-time Data
    <5s
    Processing Speed
    Per Image

    The Problem: Urban Heat Islands in Patna

    Patna, India's capital of Bihar, faces a critical Urban Heat Island (UHI) effect: surface temperatures in dense urban areas reach 6.88°C higher than surrounding rural areas.

    Root Causes:

    • ✗ Loss of 45% green cover (1990-2022)
    • ✗ Rapid concrete/asphalt expansion
    • ✗ No data-driven urban planning
    • ✗ Lack of real-time temperature monitoring
    • ✗ No actionable mitigation strategies

    Impact:

    🌡️ Heat-Related Mortality
    +32% during summer
    💨 Air Quality Degradation
    AQI 150-350 (Unhealthy)
    ⚡ Energy Consumption
    +40% AC usage
    💧 Water Scarcity
    Aquifer depletion

    The Solution: AI-Powered Detection & Mitigation

    Green Island leverages cutting-edge AI/ML and geospatial analysis to map temperature hotspots, identify green cover loss, and recommend actionable mitigation strategies.

    Satellite Data Analysis

    Processing 30+ years of Landsat 8 & Sentinel-2 imagery (1990-2022)

    GDAL, Rasterio, NumPy, Pandas

    AI-Powered Segmentation

    UNet + ResNet50 transfer learning detects buildings/roofs with 94% accuracy

    TensorFlow 2.13, ResNet50, UNet

    Real-Time Heatmap Visualization

    Temperature overlays from 50+ weather stations with 0.5°C precision

    Leaflet.js, Chart.js, GeoJSON

    Actionable Recommendations

    15+ mitigation strategies with cost-benefit analysis for urban planners

    ML Forecasting, Scikit-learn

    Technical Architecture

    Frontend

    • Next.js 14
    • Leaflet.js Maps
    • Interactive GeoJSON
    • Chart.js Visualizations
    • Tailwind CSS

    Backend & ML

    • Python 3.10
    • GDAL/Rasterio
    • TensorFlow 2.13
    • Scikit-learn
    • NumPy/Pandas

    Data Sources

    • Landsat 8 Imagery
    • Sentinel-2 Data
    • 50+ Weather Stations
    • 1000+ Training Samples
    • 30+ Years History

    Model Performance

    94%
    Model Accuracy
    Building Detection
    <5s
    Processing Speed
    Per 100x100km tile
    30 years
    Temporal Coverage
    Landsat Archive

    Key Findings from Data Analysis

    6.88°C
    32 Years

    Average temperature rise in urban areas vs. rural regions (1990-2022)

    45%
    1990-2022

    Green cover loss in Patna city boundaries

    1,247 km²
    Urban + Peri-urban

    Area analyzed covering Patna Metropolitan Region

    15+
    With ROI Analysis

    Actionable mitigation strategies identified for urban planners

    Recommended Mitigation Strategies

    🌳

    Urban Reforestation

    Plant 500K trees in identified hotspots (High Priority)

    Potential Impact: -2.5°C
    💧

    Blue Spaces

    Install water bodies, lakes, fountains (Priority)

    Potential Impact: -1.8°C
    ⚪

    Cool Roofs

    Reflective coatings on 10K+ buildings (Medium)

    Potential Impact: -1.2°C
    🛣️

    Cool Pavements

    Permeable, reflective road surfaces (Medium)

    Potential Impact: -0.9°C
    🏗️

    Green Buildings

    Vertical gardens, green facades (High ROI)

    Potential Impact: -1.4°C
    🚗

    Green Transport

    EV charging + cycle lanes (Long-term)

    Potential Impact: -0.8°C

    Impact & Recognition

    🏆 Hackathon Winner

    Techphilia 2025 - Amity University Patna

    First prize for AI/ML innovation in environmental science

    📊 Presented to Stakeholders

    Urban planners, city administrators & policymakers

    Actionable insights for Patna Smart City Initiative

    🚀 Production Deployment

    Processing 500+ satellite images daily

    Sub-5 second latency with 99.8% uptime

    🔗 Live Platform

    greenisland-uhi.vercel.app

    Open-source geospatial analysis platform

    Explore the Platform

    Interactive maps, real-time data visualizations, and detailed analysis of Urban Heat Islands in Patna

    Visit Green Island →