Exploring the Impact of Future Land Use Change on Global Air Quality and Nutrient Deposition

这个项目的目标是描述下个世纪预期的土地利用变化对空气质量（臭氧和细颗粒物质，PM 2.5）和大气中营养物沉积（氮和磷）的影响。这项工作包括将土地利用模型的结果与全球化学输送模型相结合，以更好地预测受土地利用变化调节的生物圈-大气交换。该项目将把由共享社会经济路径（SSP）土地利用变化情景驱动的社区土地模型（CLM2）模拟的输出与全球化学运输模型GEOS-Chem结合起来。四个模块将被修改：生物源VOC排放、土壤NOx排放、生物气溶胶排放和干沉积。该项目包括为GEOS-Chem开发和观测评价磷模型和统一土地利用方案。本项目的主要目标有两个：(1)评估土地利用变化对大气短寿命组分（O3和PM）的影响；(2)评估土地利用变化对养分沉积（磷、氮）的影响。这项研究工作将由一名研究生和一名博士后领导。大气化学前沿系列研讨会（FACSS）的延续也将得到本项目的支持。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

The objective of this project is to characterize the impact of anticipated land-use change over the next century on air quality (ozone and fine particulate matter, PM 2.5) and nutrient deposition (nitrogen and phosphorus) from the atmosphere. This effort includes coupling the results of a land-use model with a global chemical transport model to better predict biosphere-atmosphere exchanges that are modulated by land use change. The project will couple output from Community Land Model (CLM2) simulations, driven by the Shared Socioeconomic Pathways (SSP) land use change scenarios, to the global chemical transport model, GEOS-Chem. Four modules will be modified: biogenic VOC emissions, soil NOx emissions, bioaerosol emissions, and dry deposition. The project includes the development and observational evaluation of a phosphorus model and a harmonized land use scheme for GEOS-Chem. There are two overarching goals for this project: (1) Assessing the impact of projected land use change on short-lived atmospheric constituents (O3 and PM); and (2) Assessing the impact of projected land use change on nutrient deposition (phosphorus and nitrogen).This research effort will be led by a graduate student and a postdoctoral fellow. Continuation of the Frontiers in Atmospheric Chemistry Seminar Series (FACSS) will also be supported by this project.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.