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The Recent State of Ambient Air Quality in Jakarta

Category: Urban Air Quality

Article In Press
DOI: 10.4209/aaqr.2017.10.0391
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Sheila Dewi Ayu Kusumaningtyas 1, Edvin Aldrian2, Trinah Wati1, Dwi Atmoko1, Sunaryo Sunaryo1

  • 1 Indonesia Agency for Meteorology Climatology and Geophysics (BMKG), Jakarta 10720, Indonesia
  • 2 Agency for Assessment and Implementation of Technology (BPPT), Jakarta 10340, Indonesia

Highlights

Rainfall amount and policy intervention affect the decreasing trends of ions and PM.
Decreasing of PM2.5 due to much reduction of the inner-city traffic during Ied Al Fitr.
Local ambient air quality in Jakarta was improved.


Abstract

Air pollution has become a growing concern, especially in urban cities with rapidly developing economies, increasing infrastructure and vehicular population, and reduced green spaces. Fossil fuel and transportation are the main source of pollutive particles (e.g., sulfur oxide and nitrous) released into the atmosphere. Once they have entered the atmosphere, these particles create health problems, degrade air quality, and cause acid rain. Seasonal investigations on rainwater chemistry and particulate matter pollution (SPM, PM10, and PM2.5) were conducted to understand the recent state of the ambient air quality in Jakarta, Indonesia. The characteristics of PM2.5 were also analyzed during Ied Al Fitr in 2016 and 2017. Based on the observational data, the ambient air quality in Jakarta improved during the period of our study (2000–2016). The chemical constituents, i.e., the anion and cation concentrations, in precipitation show decreasing trends starting from 2006. Moreover, the PM10 and SPM concentrations also decreased slightly. The causes of these favorable trends are climatic conditions—namely, an increasing trend of rainfall—and policy intervention. Additionally, an assessment during the feast of Ied Al Fitr in 2016 and 2017 indicated a further decrease in PM2.5 due to highly reduced inner-city traffic. These events exhibited an extreme reduction of the PM2.5 concentration in Jakarta.

Keywords

Jakarta Air pollution Rainfall chemistry Particulate matter


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