Muhammad Yaasiin Oozeer 1, Andy Chan1, Maggie Chel-Gee Ooi1, Antonio Maurício Zarzur2, Santo Valentin Salinas3, Boon-Ning Chew3, Kenobi Isima Morris1, Wee-Kang Choong1

  • 1 Faculty of Engineering, University of Nottingham Malaysia Campus, Semenyih, Selangor, Malaysia
  • 2 Associate Laboratory for Computing and Applied Mathematics, National Institute for Space Research, São José dos Campos, São Paulo, Brazil
  • 3 Centre for Remote Imaging, Sensing and Processing, National University of Singapore, 119076, Singapore

Received: July 15, 2015
Revised: November 17, 2015
Accepted: January 5, 2016
Download Citation: ||https://doi.org/10.4209/aaqr.2015.07.0461  

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Cite this article:
Oozeer, M.Y., Chan, A., Ooi, M.C.G., Zarzur, A.M., Salinas, S.V., Chew, B.N., Morris, K.I. and Choong, W.K. (2016). Numerical Study of the Transport and Convective Mechanisms of Biomass Burning Haze in South-Southeast Asia. Aerosol Air Qual. Res. 16: 2950-2963. https://doi.org/10.4209/aaqr.2015.07.0461


HIGHLIGHTS

  • WRF-Chem was used to simulate the June 2013 South-Southeast Asian haze episode.
  • The effect of the synoptic weather patterns on plume flow were studied.
  • Two physical mechanisms for deep convection were identified: orographic lifting and convergence.
  • PM10 emissions were lifted to at least 200 hPa (approximately 200 hPa).

 

ABSTRACT


This study aims to identify the vertical transport mechanisms that uplifted the forest fire emissions from Sumatra to the upper troposphere during the June 2013 haze crisis. WRF-Chem is used to simulate the formation and transport of biomass-burning haze during the study period of 18th to 26th June 2013. The South-Southeast Asian synoptic weather patterns and their effects on the transport of biomass-burning emissions from Sumatra to Peninsular Malaysia were studied computationally to explain the phenomenon. Results show that PM10 emissions were lifted to 200 hPa height (approximately 12 km) over the Strait of Malacca on 24th June. The two identified vertical transport mechanisms confirmed a previously conjectured convergence over the Strait of Malacca and orographic lifting over Peninsular Malaysia. These mechanisms were able to uplift the biomass-burning emissions to the upper troposphere and this could have significant long-range transport and global climatic effects.


Keywords: WRF-Chem; Southeast Asia; Biomass burning; Vertical transport mechanism; Deep convectio


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