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CAREER: Mechanistic Studies of Secondary Organic Aerosol Production from Biomass Burning Derived Precursors

职业：生物质燃烧衍生前体产生二次有机气溶胶的机理研究

基本信息

批准号：
1753364
负责人：
Kelley Barsanti
金额：
$ 57.26万
依托单位：
University of California-Riverside
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2018
资助国家：
美国
起止时间：
2018-03-01 至 2023-09-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1753364&HistoricalAwards=false
关键词：
CAREER Mechanistic Studies Secondary Organic

项目摘要

The goal of this project is to improve models that predict the formation of secondary organic aerosol (SOA) in the atmosphere. It is focused on SOA formed from biomass burning emissions. The project includes experiments conducted in the atmospheric chambers at the University of California, Riverside (UCR) and builds on the historical expertise and the series of aggregated chemical mechanisms produced by the Statewide Air Pollution Research Center (SAPRC) at UCR. The results of this project will be beneficial to local and regional regulatory agencies (e.g., the California Air Resources Board and the South Coast Air Quality Management District) and fire management communities (e.g., the Joint Fire Science Program).The mechanistic understanding and model representation of biomass burning (BB)-SOA will be advanced through conventional and novel chamber studies of recently identified and poorly characterized potential SOA precursors emitted from BB, the evaluation of chamber data and SOA parameterizations using existing approaches; and the development and testing of an innovative SOA model that better integrates gas- and particle-phase chemistry based on the widely-used gas-phase chemical mechanism SAPRC. The specific objectives of the research are to: (1) Elucidate the secondary organic aerosol (SOA) formation potential for biomass burning (BB) derived hydrocarbon precursors; (2) Evaluate changes in SOA mass formation and properties with changes in chemical conditions; (3) Develop SOA parameterizations using existing two product (2p) and volatility basis set (VBS) model approaches; and (4) Advance an integrated gas- and particle-phase model representation of SOA formation.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.

该项目的目标是改进预测大气中二次有机气溶胶(SOA)形成的模型。它的重点是由生物质燃烧排放形成的SOA。该项目包括在加州大学河滨分校(UCR)的大气室中进行的实验，并以加州大学河滨分校全州空气污染研究中心(SAPRC)产生的历史专业知识和一系列聚合化学机制为基础。该项目的成果将有益于当地和区域监管机构(例如，加州空气资源委员会和南海岸空气质量管理区)和消防管理社区(例如，联合火灾科学计划)。生物质燃烧(BB)-SOA的机理理解和模型表示将通过对最近从BB排放的、特征不佳的潜在SOA前体的传统和新的室内研究、使用现有方法的室内数据评估和SOA参数化，以及基于广泛使用的气相化学机制SAPRC开发和测试更好地整合气体和颗粒相化学的创新的SOA模型而得到推进。这项研究的具体目标是：(1)阐明生物质燃烧(BB)衍生碳氢化合物前体的二次有机气溶胶(SOA)形成潜力；(2)评估随着化学条件的变化，二次有机气溶胶质量形成和性质的变化；(3)使用现有的两种产品(2p)和挥发性基集(VBS)模型方法开发二次有机气溶胶(SOA)参数化；以及(4)提出一种集成的气相和颗粒相模型表示方法。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。