CAREER: Chemistry-Climate Interactions and Feedbacks through Coupled Atmosphere-Biosphere Processes

职业：通过大气-生物圈耦合过程进行化学-气候相互作用和反馈

• 批准号: 1848372
• 负责人: Christopher Holmes
• 金额: $ 52.46万
• 依托单位: Florida State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-04-01 至 2024-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1848372&HistoricalAwards=false
• 关键词: CAREER; Chemistry; Climate; Interactions; Feedbacks

This project will develop a large dataset to improve understanding and model representation of interactions between the Earth's atmosphere and its ecosystems. The work focuses on how ozone in the atmosphere impacts the exchange of carbon, water, and heat by combining a series of measurements from multiple locations. The resulting model and dataset will be used to predict how future climate conditions may affect ozone concentrations and the atmosphere-ecosystem interactions. This work will strengthen understanding of the connections between gas concentrations in the atmosphere and within the plants and solid materials on the surface.Specifically, the following science questions will be addressed: 1) Does the observed relationship between O3 flux and fluxes of carbon and water at eddy-covariance flux towers agree with results from single-species studies? 2) How well do current climate and air quality models predict O3 deposition, deposition velocity, and stomatal uptake? 3) What effect does O3-biosphere coupling through water-use efficiency (WUE) have on biosphere resiliency and atmospheric chemistry in the face of global change? 4) Do other phytotoxic air pollutants, such as sulfur dioxide and nitrogen oxides affect carbon and water fluxes and present-day levels, either individually or through synergistic multi-pollutant effects?The project also includes a range of educational and outreach activities to strengthen and diversify the scientific workforce including collaborating with a nearby historically black university (Florida Agricultural and Mechanical University), training undergraduates to participate in the research effort, and, expanding model applications in graduate level courses.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.

该项目将开发一个大型数据集，以提高对地球大气层与其生态系统之间相互作用的理解和模型表示。这项工作的重点是通过结合多个地点的一系列测量，研究大气中的臭氧如何影响碳、水和热量的交换。由此产生的模型和数据集将用于预测未来气候条件如何影响臭氧浓度和大气-生态系统相互作用。本研究将加深对大气中气体浓度、植物体内气体浓度与地表固体物质之间关系的认识，具体而言，将解决以下科学问题：1）在涡动相关通量塔上观测到的O3通量与碳和水通量之间的关系是否与单物种研究的结果一致？2)目前的气候和空气质量模型如何预测O3沉积、沉积速度和气孔吸收？3)面对全球变化，通过水利用效率（WUE）实现的O3-生物圈耦合对生物圈恢复力和大气化学有什么影响？4)其他植物毒性空气污染物，如二氧化硫和氮氧化物，是否单独或通过多污染物协同效应影响碳和水通量及当前水平？该项目还包括一系列教育和推广活动，以加强和多样化的科学劳动力，包括与附近的一所历史悠久的黑人大学合作（佛罗里达农业和机械大学），培训本科生参与研究工作，以及，该奖项反映了NSF的法定使命，并已被认为是值得通过评估使用的支持基金会的学术价值和更广泛的影响审查标准。

项目成果

Development of an ecophysiology module in the GEOS-Chem chemical transport model version 12.2.0 to represent biosphere–atmosphere fluxes relevant for ozone air quality

• DOI: 10.5194/gmd-16-2323-2023
• 发表时间: 2023-05
• 期刊: Geoscientific Model Development
• 影响因子: 5.1
• 作者: Joey C. Y. Lam;A. Tai;J. Ducker;C. Holmes

Have improvements in ozone air quality reduced ozone uptake into plants?

• DOI: 10.1525/elementa.399
• 发表时间: 2020
• 期刊: Pediatric Allergy and Immunology
• 影响因子: 4.4
• 作者: A. C. Ronan;J. Ducker;J. Schnell;C. Holmes

New Evidence for the Importance of Non‐Stomatal Pathways in Ozone Deposition During Extreme Heat and Dry Anomalies

极热和干燥异常期间非气孔途径在臭氧沉积中重要性的新证据

• DOI: 10.1029/2021gl095717
• 发表时间: 2022
• 期刊: Geophysical Research Letters
• 影响因子: 5.2
• 作者: Wong, A. Y. H.;Geddes, J. A.;Ducker, J. A.;Holmes, C. D.;Fares, S.;Goldstein, A. H.;Mammarella, I.;Munger, J. W.
• 通讯作者: Munger, J. W.