权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Collaborative Research: Ionic Solutions and the Partitioning of Oxygenated Organic Compounds in the Troposphere

合作研究：离子溶液和含氧有机化合物在对流层中的分配

基本信息

批准号：
2024178
负责人：
Christopher Hennigan
金额：
$ 35.57万
依托单位：
University of Maryland Baltimore County
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2020
资助国家：
美国
起止时间：
2020-07-01 至 2024-06-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2024178&HistoricalAwards=false
关键词：
Collaborative Research Ionic Solutions Partitioning

项目摘要

This project includes laboratory experiments and field measurements to help build a quantitative understanding of influence of salts and pH on the partitioning of atmospheric organics between the aerosol and gas phase. The goal of the project is to develop parameterizations suitable for implementation in atmospheric models to improve the prediction of the atmospheric particulate matter burden, and subsequent impacts related to air quality, direct and indirect radiative forcing and the deposition of reactive carbon. The proposed research will address the following questions: (1) How does partitioning of atmospheric organic gases change as a function of salt composition, concentration and droplet pH in different environments? and (2) How do changes in gas-to-water partitioning alter the budget and lifetime of reactive carbon compounds in the atmosphere? This effort will advance the understanding of fundamental chemistry through the deployment of mist chambers to humid and arid regions of the U.S. to systematically study inorganic salt influences on the partitioning of ambient water-soluble organic gases in contrasting environments. The project incorporates a creative method for communicating scientific findings through the participation of art students, who will design insightful content about air quality and climate change for those outside the scientific community.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.

该项目包括实验室实验和现场测量，以帮助建立对盐和pH值对气溶胶和气相之间大气有机物分配的影响的定量理解。该项目的目标是制定适合在大气模型中实施的参数化方法，以改进对大气颗粒物负担的预测，以及随后与空气质量、直接和间接辐射强迫和活性碳沉积有关的影响。本研究将解决以下问题：（1）在不同环境中，大气有机气体的分配是如何随着盐的组成、浓度和液滴pH值的变化而变化的？气水分配的变化如何改变大气中活性碳化合物的收支和寿命？这项工作将通过在美国潮湿和干旱地区部署雾室来系统地研究无机盐对对比环境中环境水溶性有机气体分配的影响，从而促进对基础化学的理解。该项目采用了一种创造性的方法，通过艺术学生的参与来传播科学发现，他们将为科学界以外的人设计关于空气质量和气候变化的有见地的内容。该奖项反映了NSF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。