International Research Fellowship Program: Chamber Studies and Field Analysis of Organic Aerosol with High Resolution Aerosol Mass Spectrometry Statistical Techniques

国际研究奖学金计划：利用高分辨率气溶胶质谱统计技术对有机气溶胶进行室内研究和现场分析

• 批准号: 0701013
• 负责人: Peter DeCarlo
• 金额: --
• 依托单位: DeCarlo Peter F
• 依托单位国家: 美国
• 项目类别: Fellowship Award
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-10-01 至 2010-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0701013&HistoricalAwards=false
• 关键词: International; Research; Fellowship; Program; Chamber

0701013DeCarloThe International Research Fellowship Program enables U.S. scientists and engineers to conduct nine to twenty-four months of research abroad. The program's awards provide opportunities for joint research, and the use of unique or complementary facilities, expertise and experimental conditions abroad.This award will support a twenty-four-month research fellowship by Dr. Peter F. DeCarlo to work with Dr. Urs Baltensperger at the Paul Scherrer Institut in Switzerland.Aerosols in the atmosphere have been shown to have adverse effects on climate, visibility, and human health. Currently, the direct and indirect effects of aerosols represent the largest source of uncertainty in our understanding of the climate system. The organic component of ambient aerosol, which can make up a significant fraction of the aerosol mass, is poorly characterized due to the complexity of the compounds in organic aerosol. Organic aerosol is comprised of both primary emissions and secondary formation of compounds that condense to the particle phase. Much of the limited understanding of organic aerosol is due to our limited ability to measure the size and chemistry of these particles with high time resolution. Recent advances in aerosol instrumentation including aerosol mass spectrometers allow for a more detailed look at these aerosol properties. One instrument in particular, the High Resolution Time-of-Flight Aerosol Mass spectrometer, represents a significant step forward in our ability to measure the size resolved chemistry of ambient aerosol particles. This instrument will be used to study ambient atmospheric particles in Switzerland and particles generated in a state-of-the-art environmental chamber at the Paul Scherrer Institut (PSI) in Switzerland, building on previous work undertaken by the group at PSI. Measurements of ambient aerosols allow us to passively observe organic aerosols and the processes they undergo in the atmosphere. In contrast environmental chambers allow scientists to actively simulate the atmosphere in controlled experiments to gain insight into particle chemistry, formation, and growth. Combining advanced aerosol instrumentation with ambient observations and chamber experiments will increase our understanding of organic aerosols and the processes that they undergo in the atmosphere. This will allow for better quantification of the effects of aerosols on climate, health, and visibility.

0701013DeCarlo国际研究奖学金计划使美国科学家和工程师能够在国外进行9到24个月的研究。 该计划的奖项提供了联合研究的机会，以及使用独特或互补的设施，专业知识和国外的实验条件。DeCarlo与瑞士Paul Scherrer研究所的Urs Baltensperger博士合作。大气中的气溶胶已被证明对气候、能见度和人类健康有不利影响。目前，气溶胶的直接和间接影响是我们对气候系统理解的最大不确定性来源。 环境气溶胶的有机成分，可以构成气溶胶质量的重要部分，由于有机气溶胶中的化合物的复杂性，其特征很差。 有机气溶胶由初级排放物和凝结成颗粒相的化合物的次级形成物组成。 对有机气溶胶的有限了解主要是由于我们以高时间分辨率测量这些颗粒的尺寸和化学性质的能力有限。 气溶胶仪器的最新进展，包括气溶胶质谱仪允许更详细地看这些气溶胶的属性。特别是一种仪器，高分辨率飞行时间气溶胶质谱仪，代表了我们测量环境气溶胶颗粒的尺寸分辨化学的能力向前迈出的重要一步。 该仪器将用于研究瑞士的环境大气颗粒物和瑞士Paul Scherrer研究所（PSI）最先进的环境室中产生的颗粒物，该研究所以PSI小组以前开展的工作为基础。 对环境气溶胶的测量使我们能够被动地观察有机气溶胶及其在大气中的过程。 相比之下，环境室允许科学家在受控实验中积极模拟大气，以深入了解粒子化学，形成和生长。 将先进的气溶胶仪器与环境观测和室内实验相结合，将增加我们对有机气溶胶及其在大气中所经历的过程的理解。 这将有助于更好地量化气溶胶对气候、健康和能见度的影响。