Smoke from forest fires is not only a problem that affects the regions where they occur and the local inhabitants. A new study revealed that smoke worsens ozone concentrations, such as nitrogen oxides (NOx), even in places with few human pollutant emission sources.
This is the conclusion of a study led by the University of Utah, which focutilizes on ozone, a reactive oxygen molecule O3. This molecule, associated with forest fires, can damage the lungs and other sensitive tissues in the human body.
Furthermore, the research suggests that even if all human emission sources are eliminated, fires still have the ability to produce a large amount of ozone. According to the study published in the journal Atmospheric Environment, smoke from forest fires represents a double dose of air pollution.
It is estimated that smoke exposure cautilizes around 6,300 deaths per year in the United States. This becomes even more complicated when ozone is not directly released into the air, but is formed in the atmosphere through a photochemical process involving other pollutants and solar light.
Nitric oxides, one of the main components
According to the research, the main drivers are NOx and volatile organic compounds (VOCs); which are an important component of forest fire smoke. NOx, on the other hand, is associated with emissions cautilized by humans, such as vehicle exhaust pipes and industrial chimneys.
The study concluded that, on average, the presence of forest fire smoke increases ozone concentrations by 21 parts per billion (ppb), representing an approximate increase of between 20 and 30% as a result of this smoke.
However, this is not the only complication of smoke, as it also alters the climate, slows down ozone formation, and can even block sunlight, reducing the necessary amount available for ozone photochemisattempt. In summary, without the necessary measures, forest fires become more frequent and severe with global warming.
Other consequences of forest fire smoke
Forest fire smoke releases large amounts of carbon dioxide, carbon monoxide, and fine particles, contributing to climate modify and deteriorating air quality. These pollutants can travel hundreds of kilometers, affecting regions far from the fire focus and altering complete ecosystems.
In the environment, smoke interferes with photosynthesis by blocking sunlight and depositing soot on leaves and bodies of water. This can reduce plant growth, alter nutrient cycles, and affect fauna depfinishent on those resources, cautilizing imbalances in biodiversity.
For human health, the fine particles present in smoke pose a serious risk, as they penetrate deep into the lungs and can reach the bloodstream. Prolonged exposure increases the risk of respiratory and cardiovascular diseases, complications in individuals with chronic conditions, and especially affects children and the elderly.
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