MODEL SMOG

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• Josef Brechler, Jan Bednár,
• Tomá Halenka
• Dept. of Meteorology and Env. Protection
• Faculty of Mathematics and Physics
• Charles University
• Prague, Czech Republic

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• The whole period from 1. 4. to 30. 9. 1999
  divided into 9 subperiods
• 1. 4. - 19. 4., 20. 4. - 25. 5., 26. 5. - 7.
  6., 8. 6. - 29. 6., 30. 6. - 19. 7., 20. 7. -
  9. 8., 10. 8. - 22. 8., 23.
• 8. - 7. 9., 8. 9. - 30. 9.
• Following graphs shows the wind speed and
  direction on the level 850 hPa, ground
  temperature and cloudiness

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• Following figures show maps of distribution of
  emissions of VOCs, NOx and NH3 in the period 1.
  - 19. 4. and 20. 7. - 9. 8. 1999

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• Next maps - ozone ground concentration
  distribution in µg m-3 for individual subperiods

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• Thank you for your attention