Shungo Kato, Yoshizumi Kajii

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CO, O3, and VOC results during 2004 Okinawa
campaign
Shungo Kato, Yoshizumi Kajii Tokyo Metropolitan
University
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Moshiri
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CO and O3 seasonal variation at Okinawa
winter
summer
summer
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Trajectory trend at Okinawa
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Pollutant gas transport during winter Okinawa -
Ogasawara comparison
Okinawa (Hedo) November,December
2000 Ogasawara (Chichi-jima) December 1999
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Okinawa during winter in 2000
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Ogasawara measurements
Ogasawara O3
Ogasawara 1999
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Transport time and HC concentration at Okinawa
and Ogasawara
December Okinawa 2000 Ogasawara 1999
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CO, O3, and VOC measurements during the 2004
spring campaign at Hedo
Cape Hedo
CO, O3
HV
Hg
AMS
Nep
Okinawa island
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CO, O3 instruments
CO TEI model 48C Infrared
absorption O3 TEI model 49 UV
absorption
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Seasonal variation of CO and O3 at HEDO
winter
winter
winter
summer
summer
summer
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CO and O3 during Hedo campaign
Short span change
Long span change
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China
Korea
Japan
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CO and air mass origin
China
Korea
Japan
marine
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High O3
High CO
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2
3
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5
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KCJ
J
C
KJ
CKJ
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CO - O3 correlation plot
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VOC measurements
Canister sampling every 2 days, total 21
samples Analyzed by concentrator GC-FID or GC-MS
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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) ...
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VOC concentration changes
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Correlation between acetylene
Acetylene indicator of combustion Anthropoge
nic VOC good correlation between acetylene
C2Cl4 urban indicator CH3CN biomass burning
indicator also urban source ?
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Correlation between acetylene
CH3Cl, CH3Br biomass burning
indicator plants and ocean sources
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Acetone slightly higher in polluted
air CH3CHO local photochemistry
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CO, acetylene, C2Cl4
acetylene
C2Cl4