xAire: High-Resolution NO₂ Citizen Science Dataset (Barcelona)
725 nitrogen dioxide measurements collected by 1,650 participants from 18 Barcelona schools using Palmes diffusion tubes, with asthma health-impact analysis.
- Size
- 77.6 kB
- Format
- CSV
- License
- CC-BY-4.0
- Access
- Open Access
- Source
- Zenodo (record 4925845)
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Challenge
Where in Barcelona is NO₂ pollution worst around schools, and does it line up with traffic-heavy areas?
- Where to start
- Load the small measurements CSV (watch the encoding — the loader handles it). Map the 725 measurements by location and look at the high-value clusters.
- What to share
- A map of NO₂ hotspots and a paragraph on the pattern near schools.
Share your results and questions in the forum. Challenges are open-ended — there's no single right answer.