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http://dx.doi.org/10.5572/KOSAE.2011.27.6.791

Sensibility Study for PBL Scheme of WRF-CMAQ  

Moon, Nan-Kyoung (Korea Environment Institute)
Kim, Soon-Tae (Division of Environmental, Civil & Transportation Engineering, Ajou University)
Seo, Ji-Hyun (Korea Environment Institute)
Publication Information
Journal of Korean Society for Atmospheric Environment / v.27, no.6, 2011 , pp. 791-804 More about this Journal
Abstract
Numerical simulations were carried out to investigate the impact of PBL (Planetary boundary layer) scheme implemented in WRF on the result of meteorological fields and CMAQ modeling. 25-day period, representing high ozone concentration, was selected for the simulations. The three WRF domains covered East Asia region, Korean Peninsula and Seoul metropolitan area. The sensitivity of WRF-CMAQ modeling to the various PBL schemes was assessed and quantified by comparing model output and against observation from the meteorological and the air quality monitoring network within the domain. The meteorological variables evaluated included temperature, wind speed and direction over surface sites and upper air sounding sites. The CMAQ variables included gaseous species $O_3$ and $NO_x$ over monitoring stations. Although difference of PBL schemes implemented in WRF, they did not appreciably affect the WRF and CMAQ performance. There are partially differences between non-local and local mixing scheme, but are not distinct differences for the results of weather and air quality. It is suggested that impact of parameterization of vertical eddy diffusivity scheme in CMAQ also need to be researched in the future study.
Keywords
WRF; PBL scheme; CMAQ; Ozone; Dry deposition;
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