Model validation and flight measurement analysis for March, 2002

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Model validation and flight measurement analysis
for March, 2002

• Xu Jun
• (Chinese Research Academy of Environment Science,
  Beijing, P.R.China)

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Outline

• Models-3/CMAQ validation for a whole month
  simulation with site measurement
• Flight measurement analysis
• Korea flight obs
• Chinese coast area flight obs

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Model domain and sites for comparison
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SO2 daily average comparison
Oki
Yusuhara
Hedo
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SO2 comparison
Xiamen
Dalian
Tianhengdao
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NOx comparison
Yusuhara
Happo
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NOx comparison
Xiamen
Dalian
Tianhengdao
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Monthly average comparison with IMPACTS site
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Total ammonia vs sulfate
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Comparison and analysis for Korea flight
mesurement
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3.7
3.8
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3.9
3.11
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Korea flight obs at 3.11
NOx
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SO2 evolution along backward trajectory

• Mar 11th, 2002 Korea Flight obs at 1000m

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SO2 evolution along backward trajectory at 500m

• Ending at 3.11 Korea flight obs

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Backward trajectory anlysis for Korea flight
measurement

• 300m, at Mar 11, 2002

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Dalian to Qingdao flight measurement
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Dalian-Qingdao
SO2
NOx
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Summary

• Model performance was good for remote site.
• For daily or monthly mean, SO2 performance was
  good. NH3 inventory from Prof. D. Streets may be
  higher than reality.
• Flight measurement SO2 was fine at some height.
  NOx was much underpredicted. Backward trajectory
  analysis showed potential inflence of Shandong
  peninsula emission on Korea flight obs.
• More monitoring data should be included as model
  validation