Fog and low stratus (FLS) clouds are climatologically significant in many regions, impacting the hydrology, chemistry, and thermodynamic balance of ecosystems and urban environments. FLS formation and evolution is driven by complex interplays among synoptic and mesoscale meteorological conditions, aerosol-cloud interactions, and underlying land and/or water surface characteristics, such as topography/bathymetry, temperature, currents, and sea spray composition. Understanding FLS, biotic responses, and impacts thus requires a diverse array of measurements and models that link processes at multiple spatial and temporal scales. Seasonal FLS projections, vulnerability assessment of marine and urban FLS, and sensitivity to climate change are critical for coastal adaptation planning and public health. We seek presentations on physical, chemical, biological, and anthropogenic processes that drive and are influenced by coastal or non-coastal fog using any of the following: process models; ground-based, airborne, or satellite observations; manipulative experiments; or other analysis.