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

基本信息

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

项目摘要

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，以提高对地球大气与其生态系统之间相互作用的理解和模型表示。这项工作通过结合多个地点的一系列测量结果，重点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。这项工作将加强对大气和植物内气体浓度与表面固体材料之间关系的理解。具体来说，将解决以下科学问题：1）观察到的 O3 通量与碳和水通量之间的关系是否存在？涡协方差通量塔与单物种研究的结果一致吗？ 2) 当前的气候和空气质量模型对 O3 沉积、沉积速度和气孔吸收的预测效果如何？ 3）面对全球变化，O3-生物圈通过水利用效率（WUE）耦合对生物圈弹性和大气化学有何影响？ 4) 其他植物毒性空气污染物，例如二氧化硫和氮氧化物，是否会单独或通过多种污染物的协同效应影响碳和水通量和当前水平？该项目还包括一系列教育和外展活动，以加强和推广碳和水通量。使科学队伍多样化，包括与附近一所历史悠久的黑人大学（佛罗里达农业和机械大学）合作，培训本科生参与研究工作，以及扩大研究生课程中的模型应用。该奖项反映了 NSF法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

期刊论文数量（5）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

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
通讯作者：
Joey C. Y. Lam;A. Tai;J. Ducker;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.

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