Update README.md

README.md

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----
-license: gpl
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+---
+license: gpl
+language:
+- en
+tags:
+- climate
+- Agriculture
+- farming
+- Africa
+size_categories:
+- 1K<n<10K
+---
+
+# Africa Agricultural Irrigated Land Dataset Card
+
+## Dataset Summary
+Annual share of agricultural land equipped for irrigation expressed as a percentage of total agricultural land for **23 African countries** (data availability varies) covering **1961-2021**.  
+Source indicator: **World Bank — Agricultural irrigated land (% of total agricultural land)** (`AG.LND.IRIG.AG.ZS`).  
+Data cleaned and reformatted for ML pipelines.
+
+## Source & Licensing
+* **Original data**: [World Bank Open Data – AG.LND.IRIG.AG.ZS](https://data.worldbank.org/indicator/AG.LND.IRIG.AG.ZS)  
+  Retrieved 2025-08-07.
+* **License**: Creative Commons Attribution 4.0 International (CC-BY-4.0).
+
+---
+
+## Intended Uses
+* Modeling irrigation adoption trends over time.
+* Feature for agronomic, food security, or climate change studies.
+* Benchmarking national irrigation expansion policies.
+
+Not suited for sub-national analyses; indicator is national aggregate.
+
+---
+
+## Limitations & Caveats
+* Coverage is limited — data available for only ~23 African countries and mainly from 1980s onwards.
+* Estimates may involve interpolation; check original World Bank metadata for methodology.
+* Values represent percentage of *equipped* irrigated land, not actual irrigated area.
+
+---
+
+## Citation
+> World Bank. *Agricultural irrigated land (% of total agricultural land)* (`AG.LND.IRIG.AG.ZS`). Accessed 2025-08-07.
+
+> Electric Sheep (2025). *Africa Agricultural Irrigated Land ML Dataset*
+
+---
+
+## Contact
+Questions or issues: `kossisoroyce@gmail.com`.