The authors received an allocation through the NSF LRAC program to run dynamics on the UIUC Blue Waters and TACC Frontera supercomputing facilities. Memory-Optimized NAMD 2.14, which has excellent scaling for very large systems across thousands of nodes, was used to run all all-atom explicit-solvent molecular dynamics simulations; a NAMD efficiency scaling plot across UIUC Blue Waters and TACC Frontera is included in Figure for the curious reader. Each 40-nm aerosol was placed in an empty periodic box cell approximately 55 nm to a side. The authors note that, due to the large size of the SSA model, small deformations in the aerosol as it evolves could cause it to interact with itself across a PBC boundary if the box is not sufficiently large. We found that a 75 Å buffer on all sides of the aerosol particle prevented self-interaction.