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doi: 10.18178/ijesd.2024.15.3.1475
The Impact of Atmospheric Stability Affected by Peat Forest Fire on Surface PM2.5 Concentration in Pontianak Urban Area during La Nina Events 2022
2Electronics Engineering Department, Faculty of Engineering, Universitas Negeri Padang, Indonesia
3Environment Agency of Pontianak City, Indonesia
Email: suma011@brin.go.id (Su.); saip001@brin.go.id (S.H.); atep001@brin.go.id (A.R.); syafrijon@ft.unp.ac.id (Sy.); risy001@brin.go.id (R.); lamb003@brin.go.id (L.N.); angg032@brin.go.id (A.Y.P.); s.teetyas@yahoo.com (E.K.)
*Corresponding author
Abstract—Pontianak is the capital city of West Kalimantan
province, which is affected by forest fires, especially forests on
peatlands that also burn peat. The forest and peatland fires
produce a lot of smoke-content particulates because of
incomplete combustion of underground biomass. This paper
investigates the PM2.5 concentration in 2021 coinciding with
moderate La Nina when the effect of a short dry season does not
support the occurrence of fires. PM2.5 concentration is analyzed
by considering the air quality standard, atmospheric stability,
and hotspot account observed by the SNPP satellite in the area
with a radius of less than 0.5%, 1%, and 2%. Analysis of the hotspot
counts shows a good relationship with the dry season pattern in
equatorial rainfall-type regions. Forest fires at locations less
than 0.5% and strong inversion layers created heavy pollution in
Pontianak, where the air environment is at dangerous levels,
with daily concentrations exceeding the National Ambient Air
Quality Standards and WHO air quality guidelines. Seasonal
analysis shows a very high concentration difference in day and
night in the December, January Febturay (DJF) and March,
April, May (MAM) periods. This is related to the inversion event
at 07:00, where there were many double inversions during the
DJF and MAM periods, namely surface inversion and
subsidence inversion, causing particulate matter to settle on the
earth’s surface.
Keywords—air quality, PM2.5, hotspot, temperature
inversion
Cite: Sumaryati, Saipul Hamdi, Atep Radiana, Syafrijon, Risyanto, Lambang Nurdiansah, Angga Y. Putra, Estiningtyas Kusumastuti, "The Impact of Atmospheric Stability Affected by Peat Forest Fire on Surface PM2.5 Concentration in Pontianak Urban Area during La Nina Events 2022," International Journal of Environmental Science and Development vol. 15, no. 3, pp. 110-116, 2024.
Copyright © 2024 by the authors. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
