MRI: Acquisition of a Single Particle Soot Photometer system optimized to quantify black carbon and iron oxide aerosols

MRI：获取经过优化以量化黑碳和氧化铁气溶胶的单粒子烟灰光度计系统

• 批准号: 2117844
• 负责人: Nathan Chellman
• 金额: $ 19.98万
• 依托单位: Nevada System of Higher Education, Desert Research Institute
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-10-01 至 2024-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2117844&HistoricalAwards=false
• 关键词: MRI; Acquisition; Single; Particle; Soot

This project enables the acquisition of a customized Single Particle Soot Photometer (SP2) instrument coupled with a differential mobility analyzer (DMA) for simultaneous, size-resolved measurements of refractory black carbon (rBC) and iron oxide aerosols. This instrument system will be used in a wide range of atmospheric, snow, ice core, and lake sediment environmental research projects. The primary goal of this project is to develop reliable, relatively high-time-resolution, spatially distributed records of refractory black carbon concentration, flux, and particle mass distribution from lake sediment cores in the eastern Arctic and to use these and existing ice core, charcoal, and other paleoclimate records to develop a quantitative understanding of the history and climate drivers of rBC and biomass burning emissions.Research that will benefit from acquisition of the customized SP2 and DMA system includes: (1) NSF-funded paleo fire reconstructions in ice and lake sediment cores, (2) radiative forcing and melt changes resulting from deposition of light absorbing particles on seasonal snow covers and the modeling the effects on surface water resources, and (3) atmospheric research such as long-term atmospheric monitoring, characterization of aerosols from vehicle brake and tire wear, and characterization of modern biomass burning aerosols and entrained dust samples.The system will be housed in DRI’s Trace Chemistry/Ice Core Lab that has hosted a large number of post-doctoral researchers and high school, undergraduate, and graduate students over the past decade.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.

该项目能够获得定制的单粒子烟灰光度计（SP2）仪器，以及差分迁移率分析仪（DMA），用于同时测量难降解黑碳（rBC）和氧化铁气溶胶的尺寸分辨。该仪器系统将广泛应用于大气、雪、冰芯、湖泊沉积物等环境研究项目。该项目的主要目标是建立可靠的、相对高时间分辨率的、空间分布的北极东部湖泊沉积物岩心中耐火黑碳浓度、通量和颗粒质量分布的记录，并利用这些记录和现有的冰芯、木炭和其他古气候记录，对rBC和生物质燃烧排放的历史和气候驱动因素进行定量了解。将受益于定制SP2和DMA系统的研究包括：(1)美国国家科学基金会资助的冰和湖沉积物岩心古火灾重建；(2)季节性积雪上吸光颗粒沉积导致的辐射强迫和融化变化及其对地表水资源影响的模拟；(3)大气研究，如长期大气监测、车辆制动和轮胎磨损气溶胶表征、现代生物质燃烧气溶胶表征和带尘样品表征。该系统将被安置在DRI的痕量化学/冰芯实验室中，该实验室在过去十年中接待了大量博士后研究人员以及高中生、本科生和研究生。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Dissolved black carbon as a potential driver of surface water heating dynamics in wildfire-impacted regions: A case study from Pyramid Lake, NV, USA

• DOI: 10.1016/j.scitotenv.2023.164141
• 发表时间: 2023-05-22
• 期刊: SCIENCE OF THE TOTAL ENVIRONMENT
• 影响因子: 9.8
• 作者: Kruger，Brittany R.;Hausner，Mark B.;Khlystov，Andrey
• 通讯作者: Khlystov，Andrey