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