Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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The Effect of the Chemical Lateral Boundary Conditions on CMAQ Simulations of Tropospheric Ozone for East Asia

동아시아지역의 CMAQ 대류권 오존 모의에 화학적 측면 경계조건이 미치는 효과

  • Hong, Sung-Chul (Climate Change Research Division, Climate and Air Quality Research Department, National Institute of Environmental Research) ;
  • Lee, Jae-Bum (Climate Change Research Division, Climate and Air Quality Research Department, National Institute of Environmental Research) ;
  • Choi, Jin-Young (Climate Change Research Division, Climate and Air Quality Research Department, National Institute of Environmental Research) ;
  • Moon, Kyung-Jung (Measure Analysis Division, Yeongsan River Basin Environment Office, National Institute of Environmental Research) ;
  • Lee, Hyun-Ju (Climate Change Research Division, Climate and Air Quality Research Department, National Institute of Environmental Research) ;
  • Hong, You-Deog (Climate Change Research Division, Climate and Air Quality Research Department, National Institute of Environmental Research) ;
  • Lee, Suk-Jo (Climate Change Research Division, Climate and Air Quality Research Department, National Institute of Environmental Research) ;
  • Song, Chang-Keun (Climate Change Research Division, Climate and Air Quality Research Department, National Institute of Environmental Research)
  • 홍성철 (국립환경과학원 기후변화연구과) ;
  • 이재범 (국립환경과학원 기후변화연구과) ;
  • 최진영 (국립환경과학원 기후변화연구과) ;
  • 문경정 (영산강물환경연구소) ;
  • 이현주 (국립환경과학원 기후변화연구과) ;
  • 홍유덕 (국립환경과학원 기후변화연구과) ;
  • 이석조 (국립환경과학원 기후변화연구과) ;
  • 송창근 (국립환경과학원 기후변화연구과)
  • Received : 2012.07.03
  • Accepted : 2012.08.30
  • Published : 2012.10.31
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Abstract

The goal of this study is to investigate the effects of the chemical lateral boundary conditions (CLBCs) on Community Multi-scale Air Quality (CMAQ) simulations of tropospheric ozone for East Asia. We developed linking tool to produce CLBCs of CMAQ from Goddard Earth Observing System-Chemistry (GEOS-Chem) as a global chemistry model. We examined two CLBCs: the fixed CLBC in CMAQ (CLBC-CMAQ) and the CLBC from GEOS-Chem (CLBC-GEOS). The ozone fields by CMAQ simulation with these two CLBCs were compared to Tropospheric Emission Spectrometer (TES) satellite data, ozonesonde and surface measurements for May and August in 2008. The results with CLBC-GOES showed a better tropospheric ozone prediction than that with CLBC-CMAQ. The CLBC-GEOS simulation led to the increase in tropospheric ozone concentrations throughout the model domain, due to be influenced high ozone concentrations of upper troposphere and near inflow western and northern boundaries. Statistical evaluations also showed that the CLBC-GEOS case had better results of both the index of Agreement (IOA) and mean normalized bias. In the case of IOA, the CLBC-GEOS simulation was improved about 0.3 compared to CLBC-CMAQ due to the better predictions for high ozone concentrations in upper troposphere.

Keywords

References

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