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- B23K-1902: Linking dynamic N availability to post-fire soil NO and N2O emissions
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Board 1902‚ Hall EFG (Poster Hall)NOLA CC
Author(s):Generic 'disconnected' Message
Maggi Laan, University of California Riverside (First Author, Presenting Author)
Kenneth Czapla, University of California Riverside
Joseph Roscioli, Aerodyne Research Inc.
Elizabeth Lunny, Aerodyne Research Inc.
Fangzhou Guo, Aerodyne Research Inc.
Joanne Shorter, Aerodyne Research Inc.
Sydney Glassman, University of California Riverside
Maria Ordonez, University of California Riverside
Peter Homyak, University of California Riverside
Wildfires are becoming more intense, frequent, and widespread around the world. While much attention is paid to fires while they are burning, our understanding of how they continue to impact regional and global air quality after they are extinguished is limited. When fires burn, they deposit a nitrogen (N) rich ash on the soil, a nutrient essential for plant and microbial life. However, without plants to take up this extra N, soil microbes can consume and release it to the atmosphere as various gases. These include nitric oxide (NO), which contributes to regional air pollution through the formation of smog; and nitrous oxide (N2O), a powerful greenhouse gas. These emissions can vary by ecosystem and how hot the fire burns, making them difficult to predict. This process is also dynamic, and likely changes over the days post-fire. To better understand these changes, we will track soil N availability and the gases being emitted from soil over time. By identifying the processes contributing to post-fire soil N emissions, we will better understand how burned soils impact regional and global air quality.
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