CAREER: Interplay of Particle Phase State and Thermodynamic Mixing in Secondary Organic Aerosol Formation and Partitioning

GSTDTAP

项目编号	1654104
	CAREER: Interplay of Particle Phase State and Thermodynamic Mixing in Secondary Organic Aerosol Formation and Partitioning
	Manabu Shiraiwa
主持机构	University of California-Irvine
项目开始年	2017
	2017-07-01
项目结束日期	2022-06-30
资助机构	US-NSF
项目类别	Continuing grant
项目经费	134658(USD)
国家	美国
语种	英语
英文摘要	Forests and anthropogenic activities emit reactive gases that convert to fine particles by complex processes. Current models are unable to predict this secondary particle production and the particle properties limiting our ability to assess impacts on regional air quality and water cycle. This project will develop a detailed first principles model and calibrate it with measurements to predict secondary fine particle production, their properties and their impacts on ice and cloud formation in convective storms. The educational component will develop a web based interactive computational chemistry model to inform and attract students to atmospheric research. The research will harness a master chemical mechanism and a kinetic multi-layer model of gas-particle interactions in aerosols and clouds that explicitly resolves the phase sensitive reactions and mass transport at the particle surface and bulk. This new model will be constrained by laboratory data on size resolved particle phase and chemical composition of secondary organic aerosol (SOA) formation from organic gases. How this formation mechanism transitions and the SOA properties change as we go from isoprene (biogenic) to naphthalene (anthropogenic) organic gases will be investigated to gain molecular level insight. The simulations will be extended to convective regimes of relative humidity, temperatures and updraft velocities that involve ice-nucleation pathways for SOA particles and compared to recent laboratory measurements.
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文献类型	项目
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/71180
专题	环境与发展全球科技态势
推荐引用方式 GB/T 7714	Manabu Shiraiwa.CAREER: Interplay of Particle Phase State and Thermodynamic Mixing in Secondary Organic Aerosol Formation and Partitioning.2017.