Temporal Variability of Black Carbon in Jakarta and Bandung, Indonesia

Muhayatun Santoso, Asta Gregorič, Martin Rigler, PHILIP K. HOPKE, National Innovation and Research Agency (BRIN), Indonesia

     Abstract Number: 28
     Working Group: Urban Aerosols

Abstract
Prior work based on 24-hour integrated filters had shown the presence of high concentrations of black carbon (BC) in the ambient PM2.5 in Indonesia. To better characterize the temporal variability and identify potential major sources of the light absorbing carbon in Indonesia, AE33 aethalometers were operated in Jakarta, the capital and largest city, and Bandung, a smaller city in central Java for almost 2 years. Indonesia has a variety of BC sources including high volumes of traffic and biomass burning that have contributed to air quality issues. Thus, the resulting multiple wavelength BC data were analyzed in a variety of ways to provide diel, monthly, and seasonal variation patterns. The data provide apportionment of the BC mass to fossil fuel and biomass burning sources. Combining the data with wind speed and direction data, likely major source locations were identified.