Collaborative Research: NSFGEO-NERC--Coupled Tropospheric Reactive Halogen Chemistry in the Subtropical Marine Boundary Layer

合作研究：NSFGEO-NERC——副热带海洋边界层中的对流层活性卤素化学耦合

• 批准号: 2109323
• 负责人: Becky Alexander
• 金额: $ 90万
• 依托单位: University of Washington
• 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: 2021-06-01 至 2024-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2109323&HistoricalAwards=false
• 关键词: Collaborative; Research; NSFGEO; NERC; Coupled

This is a project that is jointly funded by the National Science Foundation’s Directorate of Geosciences (NSF/GEO) and the National Environment Research Council (UKRI/NERC) of the United Kingdom (UK) via the NSF/GEO-NERC Lead Agency Agreement. This Agreement allows a single joint US/UK proposal to be submitted and peer-reviewed by the Agency whose investigator has the largest proportion of the budget. Upon successful joint determination of an award, each Agency funds the proportion of the budget and the investigators associated with its own investigators and component of the work.This research addresses the influence of reactive halogens on the oxidation capacity (the reactivity) of the atmosphere. A measurement campaign will be conducted at the BIOS Tudor Hill Marine Atmospheric Observatory in Bermuda to measure reactive gaseous halogens (bromine, chlorine, and iodine species) and their aerosol-phase counterparts. The results of this research will improve the process level representation of reactive halogen chemistry in atmospheric chemical transport models, increasing the ability to accurately predict the concentrations of pollutants such as ozone in the atmosphere.The observations supported by this effort will include what are expected to be the most abundant reactive gaseous bromine, chlorine, and iodine species (HCl, BrO, ClNO2, IO, among several others) and their aerosol-phase counterparts (Br-, Cl-, I-) from which the gas-phase species are derived. For gas-phase species, three different observational techniques (CIMS, LP-DOAS, TILDAS) will be employed, allowing for comparison of the measurements of some key reactive halogens while also expanding the suite of measured halogen species. A chemically detailed representation of the halogen chemistry will be included into the GEOS-Chem model as part of this project. This project will support three U.S. graduate students and one U.K. graduate student, providing these students with experience in field work, global modeling, and international collaboration.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.

这是一个由国家科学基金会地球科学局（NSF/GEO）和英国国家环境研究委员会（UK）（UK）（UK）共同资助的项目。该协议允许该机构提交和同行评审的一项联合提案，其调查员的预算比例最大。成功确定奖励后，每个机构都资助了预算的比例以及与其自己的研究人员和工作组成部分相关的研究人员。这项研究涉及反应性卤素对大气氧化能力（反应性）的影响。将在百慕大的Bios Tudor Hill海洋大气天境进行测量运动，以测量反应性气体卤素（溴，氯和碘物种）及其气溶胶 - 相对应物。 The results of this research will improve the process level representation of reactive halogen chemistry in atmospheric chemical transport models, increasing the ability to accurately predict the concentrations of pollutants such as ozone in the atmosphere.The observations supported by this effort will include what are expected to be the most abundant reactive gaseous bromine, chlorine, and iodine species (HCl, BrO, ClNO2, IO, among several others) and their aerosol-phase从中得出气相物种的对应物（br-，cl-，i-）。对于气相物种，将采用三种不同的观测技术（CIM，LP-DOAS，TILDAS），以比较某些关键反应性卤素的测量值，同时还扩大了测得的卤素物种的套件。作为该项目的一部分，将包括卤素化学的化学详细表示。该项目将支持三名美国研究生和一名英国研究生，为这些学生提供现场工作，全球建模和国际合作方面的经验。该奖项反映了NSF的法定任务，并通过使用该基金会的知识分子优点和更广泛的影响来评估NSF的法定任务。