Author: Oni Israel Oluwabusayo
Project: Climate–Health Vulnerability Index (CHVI) for Nigeria
Repository Status: Audited, Documented, and Publication Ready
Version: Final Repository Release
This repository contains the complete analytical framework, datasets, metadata, scripts, cartographic products, and publication outputs developed for the Climate–Health Vulnerability Index (CHVI) assessment of Nigeria.
The repository integrates climate hazards, population exposure, settlement characteristics, healthcare accessibility, transportation accessibility, and environmental indicators to evaluate spatial patterns of climate-health vulnerability across Nigeria.
The repository has undergone metadata validation, repository auditing, duplicate consolidation, workflow archiving, structural quality control, and repository harmonization to ensure reproducibility and publication readiness.
Climate change poses increasing risks to human health through its influence on rainfall variability, extreme weather events, environmental conditions, and access to critical infrastructure and services. Across many developing countries, including Nigeria, these risks are compounded by rapid population growth, expanding settlement systems, uneven healthcare access, and varying levels of adaptive capacity.
Despite growing recognition of climate-related health risks, comprehensive national-scale assessments that integrate climate hazards, population exposure, sensitivity factors, and adaptive capacity within a unified analytical framework remain limited. Existing studies frequently focus on individual hazards, specific regions, or isolated vulnerability dimensions, limiting their usefulness for national planning and decision-making.
This repository addresses this gap through the development of a Climate-Health Vulnerability Index (CHVI) framework for Nigeria. The framework integrates climate, demographic, settlement, healthcare, transportation, and environmental datasets within a geospatial analytical environment to quantify and map vulnerability patterns across the country.
The resulting products provide a reproducible and metadata-driven framework for climate-health vulnerability assessment that supports evidence-based planning, climate adaptation, disaster risk reduction, public health preparedness, and spatial targeting of interventions. The repository therefore serves both as a scientific research resource and as a decision-support platform for climate-health resilience planning in Nigeria.
-
Quantify spatial patterns of climate-related hazards across Nigeria using long-term rainfall variability and rainfall extreme indicators.
-
Assess population and settlement exposure to climate-related risks.
-
Evaluate sensitivity factors influencing climate-health vulnerability.
-
Measure adaptive capacity through healthcare and transportation accessibility indicators.
-
Develop a national Climate–Health Vulnerability Index (CHVI) framework at 1 km spatial resolution.
-
Identify climate-health vulnerability hotspots and priority intervention areas across Nigeria.
Hazard + Exposure + Sensitivity + Adaptive Capacity ↓ Climate–Health Vulnerability Index (CHVI) ↓ Hotspot Analysis
Primary data repository containing raw, processed, intermediate, and final analytical datasets.
Metadata documentation, inventories, workflow descriptions, QA/QC reports, lineage assessments, and repository audits.
Integrated synthesis products and composite Climate–Health Vulnerability Index outputs.
Python scripts used for data processing, indicator generation, analysis, validation, and workflow automation.
Cartographic products, map layouts, project files, reference maps, and visualization resources.
Final exported shapefile products for dissemination and GIS interoperability.
Supporting notebooks and exploratory workflow resources.
Local Government Area (LGA) aggregated analytical outputs and reporting layers.
Project documentation and supporting reference materials.
Publication-ready spatial layers.
Publication-quality figures and graphics.
Master datasets supporting final analytical outputs.
Archived pilot workflows, duplicate structures, and historical development assets retained for provenance purposes.
Final project deliverables and consolidated outputs.
- Climate Hazards Group InfraRed Precipitation with Stations (CHIRPS)
- Rainfall Variability Indicators
- Rainfall Extremes Indicators
- GRID3 Nigeria Population Dataset
- GRID3 Settlement Extents Dataset
- Settlement Morphology Indicators
- GRID3 Health Facility Dataset
- National Health Facility Registry (NHFR)
- Road Accessibility Datasets
- Road Network Density Indicators
- Nigeria State Boundaries
- Nigeria Local Government Area (LGA) Boundaries
The Climate–Health Vulnerability Index (CHVI) was developed through the integration of four principal dimensions:
Climate hazard indicators derived from rainfall variability and rainfall extremes.
Population and settlement exposure indicators representing the distribution of people and built environments.
Indicators representing susceptibility to climate-health impacts.
Indicators representing the capacity of populations and communities to respond to climate-related stresses, including healthcare accessibility and transportation accessibility.
These dimensions were integrated to generate the national Climate–Health Vulnerability Index (CHVI) and hotspot analysis products.
Key outputs include:
- NATIONAL_CHVI_COMPOSITE.csv
- NGA_CHVI_GRID.gpkg
- NGA_CHVI_GRID_CLEAN.gpkg
- LGA_CHVI_JOINED_MASTER_FINAL.gpkg
- LGA_CHVI_HOTSPOT_75KM.gpkg
- Climate Hazard Index Products
- Exposure Index Products
- Sensitivity Index Products
- Adaptive Capacity Products
The repository contains comprehensive metadata documentation covering:
- Climate datasets
- Population datasets
- Settlement datasets
- Healthcare datasets
- Road accessibility datasets
- Administrative boundary datasets
- Exposure products
- Sensitivity products
- CHVI products
- Hotspot analysis products
Quality assurance procedures include:
- Coordinate Reference System (CRS) validation
- Geometry validation
- Duplicate detection
- Null-value assessment
- Dataset lineage verification
- Metadata completeness auditing
- Repository integrity auditing
All major analytical workflows are documented through:
- Python scripts
- Metadata documentation
- Workflow descriptions
- Repository audits
- Quality-control reports
- Archived pilot workflows
The repository structure has been validated and audited to support transparent and reproducible research.
- Metadata Completion: Complete
- Repository Audit: Complete
- Duplicate Consolidation: Complete
- Publication Layer Validation: Complete
- Repository Renumbering: Complete
- Repository Harmonization: Complete
- PhD Research Ready
- Publication Ready
- Reproducible Research Ready
- Archival Ready
Oni, I. O. (Year). Climate–Health Vulnerability Index (CHVI) Repository for Nigeria. Research Repository.
Author: Oni Israel Oluwabusayo
For questions regarding methodology, datasets, analytical workflows, or repository structure, please contact the repository author.
This repository should be used in accordance with applicable data-source licensing agreements, institutional research policies, and citation requirements.