SEASONAL VARIATION EFFECT ON NO2 DISPERSION IN TANGERANG USING WRF-CHEM MODEL

• Main Author: Faisal, Irvan
• Format: Theses
• Language: Indonesia
• Subjects: Teknik saniter dan perkotaan; teknik perlindungan lingkungan
• Online Access: https://digilib.itb.ac.id/gdl/view/40498
• Institution: Institut Teknologi Bandung

Nitrogen dioxide (NO2) are are air pollutants emitted mainly from vehicle combustion which formed by a reaction between nitrogen and oxigen during fuel combustion in high temperature. NO2 is important in particulate matter (PM) and tropospheric ozone production that could harm human health. Tangerang is one major city in Banten that have rapid development in various sector, including economy, industry, and transportation. This rapid development causing an increase of air pollutant emitted by these activities. Air pollutant dispersion is very dependent with meteorological condition in the Tangerang. Seasonal variation of air pollutant could be done with WRF-Chem model. Simulation using WRF-Chem is done using Tangerang emission inventory for 3 days during wet season and dry season, with spatial resolution of 1 km in the finest domain and temporal resolution of 1 hour. The simulations show the dispersion of NO2 in Tangerang are following the sea breeze flow wind pattern both in dry and wet season. During dry season, Australian monsoon will strengthen landbreeze circluation in the night, but weaken seabreeze circulation in the day. During wet season, Asian monsoon will strengthen seabreeze circulation but weaken landbreeze circulation. The dispersion of NO2 also closely connected to atmosphere stability condition. During day, the unstable atmosphere causing the NO2 dispersed more vertically, while during night, NO2 is dispersed far horizontally caused by stable atmosphere.