Primary Convener:
Hanqin Tian, Boston College, Schiller Institute for Integrated Science and Society, Department of Earth and Environmental Sciences

Convener:
Brian Buma, Environmental Defense Fund Boulder
Xingchen Wang, Boston College

Early Career Convener:
Xinyi Yang, Boston College

Chair:
Hanqin Tian, Boston College, Schiller Institute for Integrated Science and Society, Department of Earth and Environmental Sciences
Eric Davidson, University of Maryland Center for Environmental Science Appalachian Laboratory
Brian Buma, University of Colorado Denver
Xingchen Wang, Boston College

Nitrogen (N) plays a critical role in the Earth system, influencing climate directly through nitrous oxide (N₂O) emissions and indirectly via aerosol formation, ozone production, and its coupling with the carbon cycle. As atmospheric N₂O levels continue to rise, substantial gaps remain in our understanding and prediction of N₂O sources and sinks, spatiotemporal patterns, and N-climate feedbacks. This session invites innovative research that address these gaps, advances global and national assessments of the N₂O budget, and illuminate the complex interplay among nitrogen, carbon, and climate. We welcome contributions leveraging atmospheric inversions, process-based modeling (terrestrial, aquatic, and oceanic), remote sensing, machine learning/artificial intelligence, isotope tracing, field observations, benchmarking frameworks and datasets. Multi-disciplinary and cross-scale approaches are particularly encouraged. This session aligns with international initiatives such as the Global Nitrous Oxide Budget, RECCAP3, and UNFCCC Global Stocktake, with the aim of strengthening the scientific foundations for climate mitigation and sustainable nitrogen management.

Index Terms
0315 Biosphere|atmosphere interactions
0414 Biogeochemical cycles, processes, and modeling
0469 Nitrogen cycling
4845 Nutrients and nutrient cycling

Cross-Listed:
A - Atmospheric Sciences
OS - Ocean Sciences
GC - Global Environmental Change

Suggested Itineraries:
Global Impacts‚ Solutions‚ & Policies

Neighborhoods:
3. Earth Covering