The 2023 burning season in Canada was record breaking. Intense fires started already in May and lasted many months, until October.
In 2021, a large number of fires occurred in Siberia. Smoke plumes were frequently transported over large distances from the fire sources, because of high injection in the atmosphere.
In 2019-2020 summer period, the Australian wildfires season was exceptionally intense and long. In particular, in December-January in the southeast of the country, the fires had catastrophic environmental impacts, and deteriorated air quality to hazardous levels. Moreover, intense pyrocumulonimbus (pyroCb) formation injected smoke and gases directly into the stratosphere, with likely large impacts on the atmospheric chemistry at such altitudes.
The Woolsey fire occurred in November 2018 near the city of Los Angeles in the state of California, US. The fire started on November 8, and lasted nearly two weeks.