OzoneSimulaonusingDifferentEmission&& Inventories&&in ...€¦ ·...
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Ozone Simula-on using Different Emission Inventories in Southeast Asia
Teerachai Amnuaylojaroen, Chiang Mai University Mary Barth, Louisa Emmons, NCAR Greg Carmichael, U. Iowa Jiemjai Kreasuwun, Chiang Mai University
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Emission Inventory March CO Emissions December CO Emis. RETRO – 2000 411 kmol/km2/h 497 kmol/km2/h INTEX-‐B – 2006 396 406 MACCity – 2010 437 454 SEAC4RS – 2012 306 300 MACCity-‐SEAC4RS 319 320 Biomass Burning – 2008 718 59
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MACCity-‐SEAC4RS Biomass Burning
MACCity -‐ MACCity-‐SEAC4RS SEAC4RS -‐ MACCity-‐SEAC4RS
RETRO -‐ MACCity-‐SEAC4RS INTEXB – MACCity-‐SEAC4RS
CO Emissions for March ! Lots of Biomass Burning
emissions
! 30% variaWon among anthropogenic inventories
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Ensemble Mean and Varia-on Among Model Simula-ons using Different Emissions
Inventories for Surface Mixing Ra-os for March Average
! CO and O3 mixing raWos vary by
< 30% among different anthropogenic inventories
! NO mixing raWo varies much
more ! Inclusion of shipping emissions
is main reason
! The same outcome for December simula-on when biomass burning is small
Mean CO (ppbv)
Mean O3 (ppbv)
Mean NO (ppbv)
CO VariaWon (%)
O3 VariaWon (%)
NO VariaWon (%)
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Emission Inventory
CO (ppbv) O3 (ppbv)
March December March December
RETRO – 2000 571 596 146 122
INTEX-‐B – 2006 575 497 156 119
MACCity – 2010 574 495 160 122
SEAC4RS – 2012 574 494 159 122
MACCity-‐SEAC4RS 575 495 154 115
Monthly-‐average mixing ra-os at land-‐based grid points in SE Asia
Comparison to Observa-ons ObservaWons: Thai monitoring sites, ozonesondes, MOPITT and OMI satellite data ! CO is underpredicted ! O3 is overpredicted ! NO2 column slightly underpredicted
• Not much variaWon between inventories • Biomass burning has big effect (March vs December) on surface mixing raWos
Comparison Among Emission Inventories
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Comparison of CO, O3, and NO Among Model Simula-ons Using Different Emission Inventories over SE Asia
• All models underesWmated CO and overesWmated O3 for both a biomass burning period (March) and an anthropogenic period (December) – ConducWng a sensiWvity simulaWon with increased CO and NO emissions
• There was only slight variability CO and O3 mixing raWos among different anthropogenic emission inventories
• Biomass burning created more variability
• Paper under revision for ACP Amnuaylojaroen et al. (2014) Atmos. Chem. Phys. Discuss., 14, 9345-‐9400.
Inventories: RETRO, INTEX-‐B, MACCity, SEAC4RS, and MACCity-‐SEAC4RS