Fire in the Earth System: Introduction to the Special Collection

Fire has always been an important component of many ecosystems, but anthropogenic global climate change is now altering fire regimes over much of Earth's land surface, spurring a more urgent need to understand the physical, biological, and chemical processes associated with fire as well as its effects on human societies. In 2020, AGU launched a Special Collection that spanned 10 journals, soliciting papers under the theme Fire in the Earth System to encourage state-of-the-art publications in fire-related science. The completed Special Collection comprises more than 100 papers. Here, we summarize the articles published in this collection, considering them to be grouped into seven themes: paleofire and its ties to climate; evolution of fire patterns in the recent past and the future, including the effects of ongoing climate change; physical (atmospheric) and chemical processes associated with fire; ecosystem effects, including on biogeochemical cycles; physical landscape change after fire and its associated hazards; fire effects on water quality, air quality, and human health; and new methods and technologies applied to fire research.

Automated summary

Fire has always been a significant part of ecosystems, but human-induced global climate change is now changing fire patterns on Earth's land surface, making it crucial to understand the physical, biological, and chemical processes of fire and its impact on human societies. In 2020, AGU launched a Special Collection across 10 journals, inviting papers on the theme of Fire in the Earth System to promote cutting-edge research in fire-related science. The completed Special Collection consists of over 100 papers. This summary categorizes the published articles into seven themes: paleofire and its correlation with climate; evolution of recent and future fire patterns under ongoing climate change; physical (atmospheric) and chemical processes associated with fire; ecosystem effects, including biogeochemical cycles; physical landscape changes and associated hazards after fire; fire effects on water quality, air quality, and human health; and new methods and technologies applied in fire research.