Effects of Quasi-Steady Environment for PM2.5 Laser-based Monitoring System During Dry Season in Two Consecutive Years

Abstract PM2.5 particulates are known to be air pollutant species that can be transported over long distances. The movement of PM2.5 in certain conditions is not only influenced by changes in microclimate, especially wind speed, wind direction and radiative transfer mechanisms, but also because of the nature of Brownian motion. In this paper, the behaviour of the presence of PM2.5 during the Dry Season will be presented in two consecutive years (2017 and 2018) where monitoring uses laser-based instruments. Monitoring is carried out in locations that have calm wind distribution characteristics that reach more than 60%, meaning that convective air mass movements occur in a minimum (quasi-steady) amount. By locating monitoring equipment at this location, it is expected to provide an overview of the PM2.5 concentration patterns both daily and monthly and prove the preposition that the two pollutant parameters are able to be present in locations that have quasi-steady conditions due to non-convective transport mechanisms.