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Zemmelink, H. J., Gieskes, W.W.C., Klaassen,W., de Baar, H.W.J., Dacey, J.W.H., Hintsa, E.J.,cgillis,W.R., Simultaneous use of relaxed eddy accumulation and gradient flux techniques for the measurement of sea-to-air exchange of dimethylsulfide, Atmos. Env., 2002, (36) 5709-5717.

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Article

The Relaxed Eddy Accumulation for Estimating Aerosols Dry Deposition above Tropical Forest

1Biology Program, Faculty of Science and Technology, Phetchabun Rajabhat University, Phetchabun, Thailand

2Division of Environmental Technology, School of Energy, Environment and Materials, King Mongkut’s University of Technology Thonburi, Bangkok, Thailand


Journal of Atmospheric Pollution. 2013, Vol. 1 No. 1, 1-4
DOI: 10.12691/jap-1-1-1
Copyright © 2013 Science and Education Publishing

Cite this paper:
Kan Khoomsab, Pojanie Khummongkol. The Relaxed Eddy Accumulation for Estimating Aerosols Dry Deposition above Tropical Forest. Journal of Atmospheric Pollution. 2013; 1(1):1-4. doi: 10.12691/jap-1-1-1.

Correspondence to: Kan  Khoomsab, Biology Program, Faculty of Science and Technology, Phetchabun Rajabhat University, Phetchabun, Thailand. Email: topkan13@hotmail.com

Abstract

The relaxed eddy accumulation (REA) method was applied to estimate dry deposition fluxes and velocities of SO42- and NO3- above a tropical forest. The monthly measured concentration of NO3- was found to be greater than that of SO42-. The average dry deposition flux of NO3- was found to be greater than that of SO42. The average deposition velocities of sulfate were evaluated to be 0.30 cm s-1 during the day and 0.22 cm s-1 at night, while the highest deposition velocities of nitrate were 0.93 cm s-1 during the day and 0.54 cm s-1 at night. The deposition velocities of aerosols (SO42- and NO3-), calculated by using the resistance model, were found to be 0.49 cm s-1 during the day and 0.29 cm s-1 at night.

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