CAREER: Strengthening the Predictive Ability for New Particle Formation--A Combined Field, Data Analysis, and Modeling Approach

该项目的主要目标是：（A）开发一种参数化方法，根据垂直分辨的实地数据，包括2004年新英格兰空气质量研究（NEAQS），确定具有不确定性界限的粒子成核率;（B）将广泛的地面测量与飞机垂直剖面信息联系起来的采样活动;以及（C）将该方法应用于新的和现有的数据以预测大陆对流层中的新粒子形成（NPF）。 采样计划将利用现有的地面测量数据，并利用国家海洋和大气管理局（诺阿）的垂直剖面工具，特别是其轻型飞机机载气溶胶观测站。 该项目包括10个月的超细颗粒物浓度、粒度分布、物理性质、二氧化硫和氨浓度的地面采样，以及一个月的密集活动，并增加了氮氧化物（NOx）和挥发性有机化合物（VOC）的测量。 这些将由使用AAO的一组较小的气溶胶和气体的垂直剖面补充。 测量将在伊利诺伊州邦德维尔进行，以利用自然发生的水平和垂直浓度梯度，以及其他现有的测量。随着NPF的模拟和测量能力的提高，将实现更广泛的影响，以持续努力，按尺寸分离颗粒物的健康影响（例如，超细对细）和来源（例如，原位成核与燃烧）。 与粒子健康效应和气溶胶气候领域的研究人员合作，将使他们能够从该项目的结果中受益。 此外，一个针对高中科学教师的推广计划将改善爱荷华州的科学教育。

The main objectives of this project are: (A) the development of a parameterization method to determine particle nucleation rates with uncertainty bounds from vertically resolved field data, including the 2004 New England Air Quality Study (NEAQS); (B) a sampling campaign that ties together extensive ground-based measurements with information from aircraft vertical profiles; and (C) application of the method to new and existing data to predict new particle formation (NPF) in the continental troposphere. The sampling plan will leverage existing ground-based measurements and utilize vertical profiling tools from the National Oceanic and Atmospheric Administration (NOAA), in particular their light aircraft Airborne Aerosol Observatory, AAO. The project includes ten months of ground-based sampling of ultrafine particle concentrations, size distribution, physical properties, sulfur dioxide, and ammonia concentrations and a one-month intensive campaign with the addition of measurements of nitrogen oxides (NOx) and speciated volatile organic compounds (VOCs). These will be supplemented by vertical profiles of a smaller suite of aerosols and gases using the AAO. The measurements will be conducted in Bondville, IL to take advantage of naturally occurring horizontal and vertical concentration gradients, as well as other existing measurements.Broader impacts will be achieved as improved simulation and measurement capabilities for NPF are applied to ongoing efforts to separate the health effects of particles by size (e.g., ultrafine vs. fine) and by source (e.g., in situ nucleation vs. combustion). Collaborations with researchers from both the particle health effect and aerosol-climate fields will allow them to benefit from the results of this project. Additionally, an outreach program for high school science teachers will improve science education in Iowa.