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Published June 15, 2023 | Published + Supplemental Material
Journal Article Open

Overview of ICARUS─A Curated, Open Access, Online Repository for Atmospheric Simulation Chamber Data


Atmospheric simulation chambers continue to be indispensable tools for research in the atmospheric sciences. Insights from chamber studies are integrated into atmospheric chemical transport models, which are used for science-informed policy decisions. However, a centralized data management and access infrastructure for their scientific products had not been available in the United States and many parts of the world. ICARUS (Integrated Chamber Atmospheric data Repository for Unified Science) is an open access, searchable, web-based infrastructure for storing, sharing, discovering, and utilizing atmospheric chamber data [https://icarus.ucdavis.edu]. ICARUS has two parts: a data intake portal and a search and discovery portal. Data in ICARUS are curated, uniform, interactive, indexed on popular search engines, mirrored by other repositories, version-tracked, vocabulary-controlled, and citable. ICARUS hosts both legacy data and new data in compliance with open access data mandates. Targeted data discovery is available based on key experimental parameters, including organic reactants and mixtures that are managed using the PubChem chemical database, oxidant information, nitrogen oxide (NOx) content, alkylperoxy radical (RO₂) fate, seed particle information, environmental conditions, and reaction categories. A discipline-specific repository such as ICARUS with high amounts of metadata works to support the evaluation and revision of atmospheric model mechanisms, intercomparison of data and models, and the development of new model frameworks that can have more predictive power in the current and future atmosphere. The open accessibility and interactive nature of ICARUS data may also be useful for teaching, data mining, and training machine learning models.

Additional Information

© 2023 The Authors. Published by American Chemical Society. Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/). We acknowledge funding from the National Science Foundation, Directorate for Geosciences, Division of Atmospheric and Geospace Sciences, Atmospheric Chemistry Program under the following grants: 1740571 (Nguyen); 1740552 (Seinfeld); 1740610 (Jimenez, Ziemann); 1740640 (Nizkorodov); 1740665 (Donahue, Robinson, Pandis); 1740587 (Hildebrandt Ruiz); 1740625 (Cocker); 1740568 (Ng). T.B.N. is also supported by the California Agricultural Experiment Station (grant no. CAD-ETX-2699-H) through the USDA National Institute of Food and Agriculture. The National Center for Atmospheric Research is operated by the University Corporation for Atmospheric Research, under the sponsorship of the National Science Foundation. We are grateful for the helpful feedback from our Data User test cohort: Prof. Alex Archibald at the University of Cambridge, and 12 other anonymous reviewers. Author Contributions. T.B.N. conceived the project, directed the project, supervised project efforts, and wrote the manuscript. K.H.B. supervised the technical validation. E.E.C. and P.O.S. built the initial version of the repository. J.J.P. built the final version of the repository. C.-Y.S.H., M.S.M., E.J.N., B.L.T., and S.J.W. advised on data management decisions. E.J.N. and J.J.P. developed GDEX mirroring and citation mechanisms. D.R.C., N.M.D., L.H.R., J.L.J., N.L.N., S.A.N., J.J.O., G.S.T., J.H.S., P.J.Z., and T.B.N. obtained the funding and casted final votes on project decisions as members of the Scientific Steering Committee. All authors contributed to project activities, decision making, written protocols, shared tools, technical assessments, and the submission of data and metadata. All authors read and revised the manuscript. The authors declare no competing financial interest.

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August 22, 2023
October 20, 2023