S. M. Kreidenweis coauthored a hygroscopicity framework with M. D. Petters for relating aerosol water uptake to cloud-condensation activity. The framework balances solute effects with the curvature contribution to droplet vapor pressure.
A particle's dry diameter and hygroscopicity jointly affect its activation threshold. Thus two equally sized particles need not form cloud droplets at the same supersaturation if their compositions differ.[ref]
A single parameter representation of hygroscopic growth and cloud condensation nucleus activity by M. D. Petters and S. M. Kreidenweis. Research topic and author attribution in the primary publication
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