Simulation of Tropospheric Chemistry over the United States, with Particular Focus on the Free Troposphere and the Role of Lightning Reactive Nitrogen Oxides (NOx)

美国上空对流层化学模拟，特别关注自由对流层和闪电反应性氮氧化物 (NOx) 的作用

• 批准号: 0422964
• 负责人: Noor Gillani
• 金额: --
• 依托单位: University of Alabama in Huntsville
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-09-01 至 2010-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0422964&HistoricalAwards=false
• 关键词: Simulation; Tropospheric; Chemistry; over; United

This study involves addition of specific free tropospheric processes to the EPA's CMAQ (Community Multi-scale Air Quality) model, and examination of their impact on free tropospheric chemistry, and subsequent influence on boundary layer ozone. These processes include stratosphere-troposphere exchange, planetary boundary layer - free troposphere exchange, and production of reactive nitrogen (NOx) from lightning. These model additions will make significant use of available in situ and remote observational data, and global model results. The CMAQ model is widely used in the community, but is known to perform poorly in simulations of the free troposphere. The goal of this project is to improve that situation.The broader impacts of this project include the support of a graduate student and two post-doctoral fellows, and likely improvement of well-used models for tropospheric chemistry research and air quality management. These model improvements will allow better assessment of the effectiveness of US air quality policies, and more reliable testing of alternative air pollution control scenarios.This project involves significant synergism with activities sponsored by other agencies. In addition to the 3 senior scientists, 2 post-doctoral fellows and graduate student from the University of Alabama in Huntsville, and the senior scientist and graduate student from the University of Nevada Las Vegas sponsored in this project, there will be coordination with 2 senior scientists from NASA, a senior scientist from NCAR, and several senior scientists from EPA.

这项研究涉及将特定的自由对流层过程添加到 EPA 的 CMAQ（社区多尺度空气质量）模型中，并检查它们对自由对流层化学的影响，以及随后对边界层臭氧的影响。 这些过程包括平流层-对流层交换、行星边界层-自由对流层交换以及闪电产生活性氮（NOx）。 这些模型的补充将大量利用现有的现场和远程观测数据以及全球模型结果。 CMAQ 模型在社区中广泛使用，但众所周知，它在自由对流层的模拟中表现不佳。 该项目的目标是改善这种情况。该项目的更广泛影响包括一名研究生和两名博士后研究员的支持，以及可能改进对流层化学研究和空气质量管理的常用模型。 这些模型的改进将有助于更好地评估美国空气质量政策的有效性，并更可靠地测试替代空气污染控制方案。该项目与其他机构赞助的活动具有显着的协同作用。 本项目除了赞助的阿拉巴马大学亨茨维尔分校的3名高级科学家、2名博士后和研究生以及内华达大学拉斯维加斯分校的高级科学家和研究生外，还将与NASA的2名高级科学家、NCAR的一名高级科学家和EPA的几名高级科学家进行协​​调。