Scientists Track Wildfire Smoke Clouds

Intense wildfires can create large smoke-filled cloud systems called pyrocumulonimbus. These are fire-driven storm clouds. They work in a way similar to volcanic eruptions. The strong fires push large amounts of gas and tiny particles high into the stratosphere, which is an upper layer of the atmosphere. Once there, this airborne material can travel around the world and stay in the air for years. It may change how energy moves through the atmosphere and affect the protective ozone layer.

To study these events, atmospheric researchers joined a NASA project called INSPYRE. In the summer of 2026 they used special research aircraft and ground vehicles. One main target was Utah’s Widemouth 2 wildfire. This fire grew quickly in early August because of strong winds and high temperatures. Satellite data showed cloud temperatures falling below minus forty degrees Celsius. This meant the rising smoke had reached the edge of the upper atmosphere. The fire produced several cloud bursts in one day, including a rare early-morning one. Flights over nearby areas collected air samples at about twelve kilometers high. These samples gave atmospheric data that normal weather models usually miss.

Global satellite records show that wildfires create dozens of these special clouds each year. Most happen in forest areas of Canada and Russia, and in grasslands of Australia and the United States. Data from recent decades suggest that fire storms add a large share of black carbon, a type of fine black particles, into the lower stratosphere. Researchers hope the direct air samples will answer remaining questions. They want to learn how different types of plants feed these events and how models can better predict the dangers on the ground and in the air.

Why do you think it is important for scientists to study the smoke clouds that come from large wildfires?