edu.ucar.opensky::articles:26259 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-24T19:32:43.283240 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d70p1402 https://doi.org/10.5067/Suborbital/KORUSAQ/DATA01 https Related Dataset #1 Korea United States Air Quality Study https://doi.org/10.5281/zenodo.4618180 https Related Software #1 geoschem/GCClassic: GEOS-Chem 13.0.0 Parameterization of size of organic and secondary inorganic aerosol for efficient representation of global aerosol optical properties 2023-05-04T00:00:00Z publication https://n2t.org/ark:/85065/d70p1402 https://doi.org/10.5194/acp-23-5023-2023 Zhu, H. author Martin, R. V. author Croft, B. author Zhai, S. author Li, C. author Bindle, L. author Pierce, J. R. author Chang, R. Y. author Anderson, B. E. author Ziemba, L. D. author Hair, J. W. author Ferrare, R. A. author Hostetler, C. A. author Singh, I. author Chatterjee, D. author Jimenez, J. L. author Campuzano-Jost, P. author Nault, B. A. author Dibb, J. E. author Schwarz, J. S. author Weinheimer, Andrew author UCAR/NCAR - Library publisher Accurate representation of aerosol optical properties is essential for the modeling and remote sensing of atmospheric aerosols. Although aerosol optical properties are strongly dependent upon the aerosol size distribution, the use of detailed aerosol microphysics schemes in global atmospheric models is inhibited by associated computational demands. Computationally efficient parameterizations for aerosol size are needed. In this study, airborne measurements over the United States (DISCOVER-AQ) and South Korea (KORUS-AQ) are interpreted with a global chemical transport model (GEOS-Chem) to investigate the variation in aerosol size when organic matter (OM) and sulfate–nitrate–ammonium (SNA) are the dominant aerosol components. The airborne measurements exhibit a strong correlation (r=0.83) between dry aerosol size and the sum of OM and SNA mass concentration (MSNAOM). A global microphysical simulation (GEOS-Chem-TOMAS) indicates that MSNAOM and the ratio between the two components () are the major indicators for SNA and OM dry aerosol size. A parameterization of the dry effective radius (Reff) for SNA and OM aerosol is designed to represent the airborne measurements (R2=0.74; slope = 1.00) and the GEOS-Chem-TOMAS simulation (R2=0.72; slope = 0.81). When applied in the GEOS-Chem high-performance model, this parameterization improves the agreement between the simulated aerosol optical depth (AOD) and the ground-measured AOD from the Aerosol Robotic Network (AERONET; R2 from 0.68 to 0.73 and slope from 0.75 to 0.96). Thus, this parameterization offers a computationally efficient method to represent aerosol size dynamically. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Copyright author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. None eng geoscientificInformation