Scientists combined surface ozone measurements from 2006 to 2023 with meteorological and satellite data. They used machine learning to estimate how ozone changed during fire episodes.
The study used NOAA satellite smoke maps to define smoke days and then compared ozone on smoke and non‑smoke days while accounting for temperature and ultraviolet radiation.
Researchers found wildfire smoke can raise daily ground‑level ozone by up to 16% in some regions. Based on exposure‑response relationships, they estimated smoke‑related ozone causes more than 2,000 excess US deaths per year and reported mortality for ages 65 and over for consistency.
Difficult words
- surface ozone — a harmful gas near the ground level
- meteorological — related to weather and the atmosphere
- satellite — a human-made object in space for observation
- machine learning — computer methods that learn from data
- smoke day — a day with air pollution from firessmoke days
- mortality — the number of deaths in a group
Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.
Discussion questions
- Have you ever been affected by wildfire smoke? What happened?
- What would you do on a smoke day to protect your health?
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