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Shungo Kato, Yoshizumi Kajii Tokyo Metropolitan University

CO, O 3 , and VOC results during 2004 Okinawa campaign. Shungo Kato, Yoshizumi Kajii Tokyo Metropolitan University. Moshiri. CO and O3 seasonal variation at Okinawa. winter. summer. summer. Trajectory trend at Okinawa. Pollutant gas transport during winter

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Shungo Kato, Yoshizumi Kajii Tokyo Metropolitan University

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  1. CO, O3, and VOC results during 2004 Okinawa campaign Shungo Kato, Yoshizumi Kajii Tokyo Metropolitan University

  2. Moshiri

  3. CO and O3 seasonal variation at Okinawa winter summer summer

  4. Trajectory trend at Okinawa

  5. Pollutant gas transport during winter Okinawa - Ogasawara comparison Okinawa (Hedo) November,December 2000 Ogasawara (Chichi-jima) December 1999

  6. Okinawa during winter in 2000

  7. Ogasawara measurements Ogasawara O3 Ogasawara 1999

  8. Transport time and HC concentration at Okinawa and Ogasawara December Okinawa 2000 Ogasawara 1999

  9. CO, O3, and VOC measurements during the 2004 spring campaign at Hedo Cape Hedo HV CO, O3 Hg AMS Nep Okinawa island

  10. CO, O3 instruments CO : TEI model 48C Infrared absorption O3 : TEI model 49 UV absorption

  11. Seasonal variation of CO and O3 at HEDO winter winter winter summer summer summer

  12. CO and O3 during Hedo campaign Short span change Long span change

  13. China Korea Japan

  14. CO and air mass origin China Korea Japan marine

  15. High O3 High CO 1 2 3 4 5 6 KCJ J C KJ CKJ

  16. CO - O3 correlation plot

  17. VOC measurements Canister sampling ; every 2 days, total 21 samples Analyzed by concentrator + GC-FID or GC-MS

  18. Analyzed species Alkane ethane propane butane pentane hexane ... Alkene ethylene propylene … acetylene Aromatics benzene toluene xylenes ... Halocarbon CH3Cl CH3Br C2Cl4 CH2Cl2 ... Others DMS (CH3CN) (acetone) (CH3CHO) (CH3OH) ...

  19. VOC concentration changes

  20. Correlation between acetylene Acetylene : indicator of combustion Anthropogenic VOC : good correlation between acetylene C2Cl4 : urban indicator CH3CN : biomass burning indicator also urban source ?

  21. Correlation between acetylene CH3Cl, CH3Br : biomass burning indicator plants and ocean sources

  22. Acetone : slightly higher in polluted air CH3CHO : local photochemistry

  23. CO, acetylene, C2Cl4 acetylene C2Cl4

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