Collaborative Research: Understanding the Drivers and Air-quality Implications of Marine Gas-phase Emissions in Urban Coastal Regions

合作研究：了解城市沿海地区海洋气相排放的驱动因素和对空气质量的影响

• 批准号: 2155194
• 负责人: Kimberly Prather
• 金额: $ 69.67万
• 依托单位: University of California-San Diego Scripps Inst of Oceanography
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-07-01 至 2025-06-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2155194&HistoricalAwards=false
• 关键词: Collaborative; Research; Understanding; Drivers; Air

This project includes a combination of field work, laboratory analysis, and modeling to improve the understanding of the complex interactions between human and natural systems at the interface of urban cities and coastal oceans. This research focuses on quantifying and characterizing factors controlling the marine emissions of trace gases in an urban coastal southern California location known to be impacted by run-off and anthropogenic emissions. The data collected in this study will be used to estimate the current and future influences of these trace gas fluxes on global climate and local air quality.This work has three primary aims: (1) Characterize the environmental drivers and anthropogenic influences controlling coastal secondary marine aerosol (SMA) precursors through controlled mesocosm experiments and in-situ measurement campaigns; (2) Integrate the gas-phase emissions characterized above into updated online coastal emissions inventories; and (3) Model impacts of the modified ocean emissions under current and future climate scenarios. The potential impacts of chemical speciation, timing, and temperature dependence identified through the field campaign and laboratory measurements will be explored using both global and regional atmospheric simulations. This effort will provide new datasets for a largely under-constrained anthropogenic-biogenic system, and lead to a subsequent improvement of emission inventories and regional and global modeling to increase the understanding of the formation of coastal secondary marine aerosols (SMA) in the atmosphere.This project includes support for a postdoctoral scholar, several graduate students, and opportunities for the involvement of citizen science.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.

该项目包括现场工作，实验室分析和建模的结合，以提高城市城市与沿海海洋界面上人类和自然系统之间复杂相互作用的理解。这项研究的重点是量化和表征控制南加州城市沿海地机的痕量气体排放的因素，已知会受到径流和人为排放的影响。这项研究中收集的数据将用于估计这些痕量气体通量对全球气候和当地空气质量的当前和未来影响。这项工作具有三个主要目的：（1）特征是环境驱动因素和人为影响，控制沿海中等海洋船舶的影响通过受控的中验实验和原位测量运动，气溶胶（SMA）前体； （2）将上述特征的气相排放整合到更新的在线沿海排放库存中； （3）在当前和将来的气候场景下，改良的海洋排放的模型影响。通过全球和区域大气模拟，将探索通过现场运动和实验室测量确定的化学物种形成，时机和温度依赖性的潜在影响。这项工作将为很大程度上受限的人为生物基因系统提供新的数据集，并导致随后改善排放清单以及区域和全球建模，以增强大气中对沿海二次海洋气溶胶（SMA）形成的理解。该项目包括对博士后学者，几位研究生的支持，以及参与公民科学的机会。该奖项反映了NSF的法定任务，并被认为是值得通过基金会的知识分子优点和更广泛影响的评估评估来通过评估来支持的。