edu.ucar.opensky::articles:12778 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-26T03:43:46.982694 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7pz59pk Limited influence of dry deposition of semivolatile organic vapors on secondary organic aerosol formation in the urban plume 2013-06-19T00:00:00Z publication https://n2t.org/ark:/85065/d7pz59pk https://doi.org/10.1002/grl.50611 Hodzic, Alma author Madronich, Sasha author Aumont, B. author Lee-Taylor, Julia author Karl, Thomas author Camredon, M. author Mouchel-Vallon, C. author UCAR/NCAR - Library publisher The dry deposition of volatile organic compounds (VOCs) and its impact on secondary organic aerosols (SOA) are investigated in the Mexico City plume. Gas-phase chemistry and gas-particle partitioning of oxygenated VOCs are modeled with the Generator of Explicit Chemistry and Kinetics of Organics in the Atmosphere (GECKO-A) from C&#8323: to C₂₅ alkanes, alkenes, and light aromatics. Results show that dry deposition of oxidized gases is not an efficient sink for SOA, as it removes <5% of SOA within the city's boundary layer and ∼15% downwind. Dry deposition competes with the gas-particle uptake, and only gases with fewer than ∼12 carbons dry deposit while longer species partition to SOA. Because dry deposition of submicron aerosols is slow, condensation onto particles protects organic gases from deposition, thus increasing their atmospheric burden and lifetime. In the absence of this condensation, ∼50% of the regionally produced mass would have been dry deposited. 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 2013 American Geophysical Union. None eng geoscientificInformation