abeylicious/nigeria-earth-observation-suite

Decadal change detection suite analyzing urban expansion, climate dynamics, and agricultural health across Nigeria using Google Earth Engine and QGIS. # 🇳🇬 Nigeria Earth Observation Suite ### Decadal Change Detection in Urban Sprawl, Climate Dynamics & Agriculture (2015–2025) ## 📌 Portfolio Overview This repository compiles four end-to-end Earth Observation (EO) case studies applying **Google Earth Engine (GEE)** and **QGIS** to analyze critical environmental and socio-economic transformations across Nigeria. The portfolio bridges multi-sensor remote sensing methodologies—ranging from **Nighttime Light (NTL) urban footprint tracking** to **MODIS/ERA5 climate parameter extraction** and **high-resolution crop health monitoring**. --- ## 🛠️ Summary of Case Studies | # | Case Study Title | Geographic Focus | Key Datasets & Sensors | Core Analytical Focus | Report Link | | :-: | :--- | :--- | :--- | :--- | :-: | | **01** | **Interstate Urban Encroachment** | Lagos–Ogun Corridor | VIIRS DNB, OpenStreetMap | Mapped decadal urban sprawl across state lines; evaluated a ~130% radiance surge along the Lagos–Ibadan E1 highway. | Explore Repo | | **02** | **Capital Settlement Dynamics** | Abuja (FCT) | VIIRS DNB, Landsat | Quantified baseline growth, satellite city expansion, and core radiance intensification across the central territory. | Explore Repo | | **03** | **Decadal Dual-Zone Climate Analysis** | Lagos vs. Maiduguri | CHIRPS, ERA5, MODIS LST | Compared 10-year climate trends (precipitation & land surface temperature) between coastal humid and northern arid biomes. | Explore Repo | | **04** | **High-Resolution NDVI Dynamics** | Rukuba Farm (Plateau) | Sentinel-2, Landsat 8/9 | Multi-temporal vegetation index tracking; evaluated seasonal phenology, irrigation cycles, and crop health metrics. | Explore Repo | --- ## 🔬 Core Technical Competencies * **Multi-Sensor Data Fusion:** Processing optical (Sentinel-2/Landsat), night-lights (VIIRS), and climate reanalysis datasets (ERA5/CHIRPS). * **Time-Series Analysis:** Extracting regional sum radiance, calculating seasonal NDVI anomalies, and filtering atmospheric n …