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KMID : 1024520160250010067
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Journal of the Environmental Sciences
2016 Volume.25 No. 1 p.67 ~ p.83
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WRF Modeling Approach for Improvement of Air Quality Modeling in the Seoul Metropolitan Region: Seasonal Sensitivity Analysis of the WRF Physics Options
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Jeong Ju-Hee
Oh In-Bo
Kang Yoon-Hee
Bang Jin-Hee
An Hye-Yeon
Seok Hyeon-Bae
Kim Yoo-Keun
Hong Ji-Hyoung
Kim Ji-young
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Abstract
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In order to improve the prediction of the regional air quality modeling in the Seoul metropolitan area, a sensitivity analysis using two PBL and microphysics (MP) options of the WRF model was performed during four seasons. The results from four sets of the simulation experiments (EXPs) showed that meteorological variables (especially wind field) were highly sensitive to the choice of PBL options (YSU or MYJ) and no significant differences were found depending on MP options (WDM6 or Morrison) regardless of specific time periods, i.e. day and night, during four seasons. Consequently, the EXPs being composed of YSU PBL option were identified to produce better results for meteorological elements (especially wind field) regardless of seasons. On the other hand, the accuracy of all simulations for summer and winter was somewhat lower than those for spring and autumn and the effect according to physics options was highly volatile by geographical characteristics of the observation site.
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KEYWORD
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Air quality modeling, WRF, PBL, Microphysics, Physics options, Sensitivity analysis
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