Across a large dry-conifer forest landscape, the area burned by high-severity fire in the past 30 y is unprecedented in five centuries. Historically, frequent low-severity fires were a stabilizing force, but this fire regime collapsed by 1900…
Source: Proceedings of the National Academy of Sciences (PNAS) | Earth, Atmospheric and Planetary Sciences
Proceedings of the National Academy of Sciences (PNAS)
Topics: Earth, Atmospheric and Planetary Sciences- Thermodynamic origin of atmospheric new particle formation: Theory for stable nucleating pairs
- Multiyear dual-isotope fingerprinting at South Asian receptor sites constrains carbon monoxide sources and enhanced oxidation
- Improved assessment of Alaskan Arctic coastal wave exposure accounting for landfast ice
- Extensive glacier loss in the coterminous United States
- Multiple-oxygen isotope constraints on aerobic respiration and gross primary productivity
- Organic imprint: Natural matter dictates crystallization of manganese oxides on hematite
- A 2,623-year temperature reconstruction from the Colorado Rocky Mountains reveals warm and cool droughts
- An unidentified reservoir of comet 81P/Wild 2 chondrules
- Causality-integrated graph learning for multi-endpoint toxicity prediction
- Deep-earth water transport beyond the transition zone via subducted feldspars
