Collaborative Research: Development and Applications of GEOS-Chem Atmospheric Chemistry in CESM and MUSICA

该项目的目标是在NCAR社区地球系统模型（CESM）中进一步发展GEOS-Chem大气化学能力。GEOS-Chem组件的模块化将使这些组件能够部署在各种不同的模型中。预计该项目将有助于更好地了解气候系统中的大气化学，并在气候变化的背景下改进空气质量预测。该项目的三个目标是：(1)将模块化GEOS-Chem组件实施到化学和气溶胶多尺度基础设施（MUSICA）模型中，包括：(a)光解频率计算，(b)化学机制，包括自适应机制自动还原，以及(c)湿沉积模块；(2)利用CESM的GEOS-Chem能力，更好地了解东亚地区的臭氧空气质量及其与对流层臭氧背景的关系；(3)应用CESM中的GEOS-Chem能力，更好地了解航空对对流层臭氧的影响。该项目将使GEOS-Chem建模社区，包括全球数百个研究小组和50多个美国大学小组，更有效地参与NCAR的CESM建模工作。该项目将支持哈佛大学和麻省理工学院的研究生。该奖项反映了美国国家科学基金会的法定使命，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。

The objective of this project is to further the development of the GEOS-Chem atmospheric chemistry capability within the NCAR Community Earth System Model (CESM). The modularization of GEOS-Chem components will enable these components to be deployed in a variety of different models. This project is expected to contribute to a better understanding of atmospheric chemistry in the climate system and to improve air quality predictions within the context of climate change.The three objectives of this project are to: (1) implement modular GEOS-Chem components into the Multi-Scale Infrastructure for Chemistry and Aerosols (MUSICA) model, including the: (a) photolysis frequency calculations, (b) chemical mechanism including the adaptive mechanism autoreduction, and (c) wet deposition module; (2) apply the GEOS-Chem capability within CESM to better understand ozone air quality over East Asia and its connection to background tropospheric ozone; and (3) apply the GEOS-Chem capability within CESM to better understand aviation’s effects on tropospheric ozone.This project will enable the GEOS-Chem modeling community, including hundreds of research groups worldwide and more than fifty US university groups, to engage more effectively with the CESM modeling efforts at NCAR. The project will support graduate students at both Harvard and MIT.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.