The Impact of Sea-type Aerozols on the Climate Change and Ozone Layer Depletion

Abstract

Sea salts aerosols are highly hygroscopic and exhibit changes as a function of relative humidity. Solid sea salt particles take up water in the atmosphere and form aqueous droplets. Deliquescence is a process in which a soluble solid substance sorbs water vapor from the air to form a very stable saturated aqueous solution on the particle’s surface. The uptake of water by hygroscopic constituents of airborne particles significantly alters particle reactivity, radiative properties, and cloud-droplet nucleation efficiency. This process is of interest in many areas, such as chemistry of sea-salt aerosols in the marine boundary layer and clouds formation in coastal areas, heterogeneous chemistry of inorganic salts, corrosion of metals in atmosphere. The main purpose of this study is to develop a Pitzer approach based thermodynamic model for stable (laboratory) and metastable (natural) equilibrium in extended brine system and to build theoretically “solar evaporation diagram”. We apply the resulting model for accurate thermodynamic description of highly non-ideal atmospheric aerosol system, and an accurate estimation of solid-liquid phase change of sea type aerosols as function of temperature (from 0оС to 75оС) and рН at wet natural conditions.