Trans-Eurasian Transport of Ozone and its Precursors

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Trans-Eurasian Transport of Ozone and its
Precursors

• Oliver Wild,
• Pakpong Pochanart and Hajime Akimoto
• Frontier Research Center for Global Change
• Yokohama, Japan

Second ICAP Workshop, Oct 21, 2004, Chapel Hill,
NC
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Trans-Eurasian Transport

• Motivation
• Trans-Pacific and Trans-Atlantic transport well
  studied
• PEM-West, TRACE-P, ACE-Asia, NARE, ITCT
• Trans-Eurasian transport less well understood due
  to location, landmass and meteorology
• Unique features
• meteorological mechanisms for export
• chemical influences due to latitude and
  meteorology
• emissions and deposition over continent
• Questions
• How does pollutant export differ from that from
  N. America or East Asia? What are the impacts on
  oxidation and climate?
• To what extent does European pollution affect
  central and eastern Asia? How does this compare
  with N. American influence?

Key Foci Air Quality, Oxidizing Capacity,
Climate
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Continental Outflow in Spring
N. American O3
European O3
4 ppbv isosurface of O3 in April
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Ozone Over Japan
Ohara and Sakata 2003 Data from 341 monitoring
stations

• Background O3 over Japan is rising
• Rising NOx/CO/NMHC emissions over Asian mainland
• What are the impacts from further afield?

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FRSGC/UCI Global CTM

• Tropospheric gas-phase chemistry
• Linearized stratospheric chemistry for O3
• Emissions for 1990 from EDGAR v2.0
• Driven by 2 sets of meteorology

Meteorology Resolution
GISS II