NSF/CONACyT: Integrated Air Modeling Approach to PM Source Apportionment at the USA/Mexico Border

NSF/CONACyT：美国/墨西哥边境 PM 来源解析的综合空气模拟方法

• 批准号: 0220079
• 负责人: JoAnn Lighty
• 金额: $ 10.11万
• 依托单位: University of Utah
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-09-01 至 2005-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0220079&HistoricalAwards=false
• 关键词: NSF; CONACyT; Integrated; Air; Modeling

0220079 Lighty The University of Utah (UofU) and the Instituto Tecnologico y de Estudios Superiores de Monterrey (ITESM) are involved in a collaborative air quality modeling study of ambient particulate matter (PM) in selected areas of the Lower Rio Grande Valley (LRGV) section of the USA/Mexico border. Special attention is being given to the peculiar evening episodes with very high PM levels observed near several large border cities and reported to be associated with increased mortality risk in at least one region.The partners have recently participated in a comprehensive PM characterization and source attribution study of the Paso del Norte airshed and propose to use a novel, integrated approach to PM source apportionment by cross-validating the results of PM Receptor Modeling (using factor analysis of receptor and source characterization data to estimate major source contributions) with PM Source Modeling results (using area emission estimates and geography- plus meteorology-based dispersion models to predict evening PM concentrations at specific receptor sites). Successful integration of both methods should permit some degree of interpolation between the limited sampling locations and time points afforded by Receptor Modeling alone while enabling calibration of Source Modeling predictions. Other potential benefits include improved PM exposure risk assessment opportunities for various population groups and more detailed evaluation of the widely reported statistical association between 24-hr PM averages and urban mortality plus morbidity. Most of the PM receptor characterization and modeling tasks will be carried out by the Uof U team whereas primary responsibility for the source measurement and modeling tasks will be undertaken by the ITESM team. Integration of measurement, data fusion, evaluation, and interpretation tasks will require a highly coordinated effort by both teams, an International Collaboration being supported by the NSF-CONACyT Collaborative Research Opportunities Program.

犹他州大学（UofU）和蒙特雷技术和环境研究所（ITESM）参与了一项合作空气质量模型研究，研究美国/墨西哥边境下格兰德河谷（LRGV）部分选定地区的环境颗粒物（PM）。 特别注意的是，在几个大的边境城市附近观察到的具有非常高的PM水平的特殊夜间事件，据报道，至少在一个地区与死亡风险增加有关。合作伙伴最近参加了对Paso del Norte气区的全面PM表征和来源归因研究，并建议使用一种新的，通过交叉验证PM受体模型的结果来进行PM源解析的综合方法（使用受体和源特征数据的因子分析来估计主要源贡献）与PM源建模结果（使用区域排放估计和基于地理加上气象学的扩散模型来预测特定受体站点的晚间PM浓度）。 这两种方法的成功整合应允许一定程度的插值之间的有限的采样位置和时间点提供单独的受体建模，同时使校准源建模预测。 其他潜在的好处包括改善不同人群的PM暴露风险评估机会，以及对广泛报道的24小时PM平均值与城市死亡率和发病率之间的统计关联进行更详细的评估。 大多数PM受体表征和建模任务将由Uof U团队进行，而源测量和建模任务的主要责任将由ITESM团队承担。测量，数据融合，评估和解释任务的整合将需要两个团队的高度协调努力，一个国际合作正在支持的NSF-CONACyT合作研究机会计划。