Since 2005, moderate volcanic eruptions and massive wildfires have significantly increased water vapor levels in the stratosphere, the atmospheric layer high above our daily weather systems.
Water vapor at this altitude acts as a greenhouse gas, trapping heat and altering ozone chemistry. Research indicates that these natural events have become a primary driver of moisture accumulation at altitudes ranging from 15 to 50 kilometers.
Unlike massive eruptions such as Mount Pinatubo, moderate volcanic activity and wildfire smoke deliver vapor steadily and incrementally. This moisture does not dissipate quickly, persisting in the stratosphere for longer than previously anticipated.
Higher moisture levels intensify the greenhouse effect at high altitudes and may delay the recovery of the ozone layer. Scientists emphasize that these processes must be incorporated into climate models alongside human-induced factors.
Data from satellites and ground stations show rising vapor concentrations specifically in regions with active volcanoes and intense fire activity. These findings are reshaping our understanding of how natural phenomena contribute to the atmospheric balance.
Understanding the role of volcanoes and fires is essential for more accurate climate forecasting and for developing strategies to mitigate risks to both the ozone layer and global temperatures.
