The prediction method of the content of salt mist aerosol in marine atmospheric environment based on mechanism and data

Abstract Salt mist is a significant environmental factor that causes corrosion of marine and coastal engineering facilities and electronic equipment failures. This paper presents a numerical analysis of the properties, formation, migration, and deposition processes of salt mist aerosols according to previous research. We find that salt mist is distributed as exponential distribution in the sea of vertical direction, and the number of them is directly proportional to the wind speed and the effective wave height, the critical velocity of salt mist sedimentation is proportional to the square of the particle radius. Through qualitative and quantitative analysis of related parameters, an empirical model of salt mist concentration distribution and deposition process are established, thereby enabling the calculation of salt mist concentration and deposition rate in coastal land and marine atmospheric environments. To compare with existing prediction methods, the parameters of this model are more comprehensive, not only include various meteorological data, but marine environmental data and other geographic data for calculating location. To illustrate, the model is applied to predict the salt mist concentration and deposition in the Philippines, using readily available meteorological data inputs such as wind speed, direction, temperature, and humidity. This enables the evaluation of corrosion levels.