Fig. 1
a Land use within the simulation domain from MODIS for 2012. Also shown are locations of the three in situ particle size distribution measurement sites (BMG, MMSF, and INDY). b Time series of hourly nucleation mode number concentrations from WRF-Chem (solid-lines; see legend in bottom panel) with various prefactors and NPF turned off, and from in situ measurements (dashed-lines). Note two instruments (an SMPS and an FMPS) were operated simultaneously at MMSF. c Comparison of the hourly average condensational sink (CS) from WRF-Chem (abscissa axis) and in situ measurements (ordinate axis). As CS did not vary greatly across the simulations, only the highest prefactor and no NPF are shown. Approximate Dp range used to compute the CS is shown in the upper left of each panel
