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. Author manuscript; available in PMC: 2018 Apr 19.
Published in final edited form as: Atmos Chem Phys. 2017;17:12449–12474. doi: 10.5194/acp-17-12449-2017

Figure 1.

Figure 1

Impact of lateral boundary conditions (LBC) on simulated seasonal surface-level concentrations. (a–d): Spatial variation in seasonal-mean surface concentrations normalized by the maximum value within the model domain across all seasons. (e–h): Fractional contribution of free-tropospheric (FT) LBCs (specified between 750–250 hPa) to the total LBC-derived concentrations at the surface. Seasons are defined as: Winter (December-February), Spring (March-May), Summer (June-August), Fall (September-November).