Provides field, lab, and model studies to advance our understanding of atmospheric processes related to climate intervention that increases our instrumentation capabilities to conduct measurements of stratospheric gases and aerosols, improves our modeling and forecasting capabilities for stratospheric chemistry and dynamics, establishes a baseline state of stratospheric composition and transport for evaluating the current performance of atmospheric models, and as point of reference for any future changes, and improves our understanding of marine cloud properties and associated cloud-aerosol interactions in order