A%20Report%20on%20South%20East%20Asia%20MICS-Asia%20Effort

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A Report on South East Asia MICS-Asia Effort

• Mr. Le Hoang Nghiem
• Dr. Nguyen Thi Kim Oanh
• Asian Institute of Technology
• and
• Vanisa Surapipith
• Air Quality and Noise Management Bureau
• Pollution Control Department, Thailand
• February 14, 2005

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Specifics of Phase II
MICS - Asia Phase II aims at transport and
deposition of sulfur, nitrogen compounds, ozone
and aerosols in East Asia.
Domain
Latitude 15 South to 60 North, Longitude 75
East to 160 East.
Periods
Period 1 March 1 31, 2001Period 2 July 1
31, 2001Period 3 December 1 31, 2001Period
4 March 1 31, 2002.
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Emission data
It is expected that all participants will use
same emission inventories of SO2 (anthropogenic
and volcanic), NOx, CO, NMVOC, NH3, BC, OC, PM10
for 2000 (0.5 degree by 0.5 degree, monthly
basis) provided by Dr. D. G. Street, Argonne
National Laboratory, and Dr. Jun-Hun Woo, the
University of Iowa. We have used all the above
mentioned emission data. Soil dust and sea salt
emissions, provided by Prof. Z. Wang, IAP, are
not used yet.
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Meteorological field
The reference meteorological fields offered by
Prof. Z. Wang, IAP using MM5 (1x1 deg) but we
could not adapt it to CHIMERE data format.
Therefore, we run MM5 ourselves using NCEP
Reanalysis Data of the same time period, which
was sent to us by Dr. Narisara Thongboonchu of
University of Iowa.
Boundary conditions
Used the boundary conditions from the global
model MOZART II from MPI Hamburg.
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Monitoring data
EANET (Acid Deposition Monitoring Network in East
Asia) monitoring data is mainly used for the
model validations,
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• Chemistry and Physics in CHIMERE
• The chemical mechanism (MELCHIOR) is adapted
  from the original EMEP mechanism.
• Photolytic rates, calculated in clear skies
  using the TUV NCAR model are attenuated using
  liquid water or relative humidity
• Boundary layer turbulence is represented as a
  diffusion (Troen and Mahrt, 1986, BLM)
• Vertical wind is diagnosed through a bottom-up
  mass balance scheme.
• Dry deposition is as in Emberson et al. (2000).
  Wet deposition is included

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• Aerosol and Numerics in CHIMERE
• A "bin" aerosol model (6 bins by default) is
  used.
• Aerosol thermodynamic equilibrium is achieved
  using the ISORROPIA model.
• Several aqueous-phase reactions considered
• Secondary organic aerosols formation considered
• Advection is performed by the PPM (Piecewise
  Parabolic Method) 3d order scheme for slow
  species.
• The numerical time solver is the TWOSTEP method.

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• Current and previous applications
• Operational air quality forecast over Western
  Europe.
• European model intercomparisons
• European projects on model comparisons of
  emission scenarios impact CITYDELTA, EURODELTA
• GMES projects PROMOTE, GEMS
• Simulations and forecasts over Thailand, China,
  Italy and Portugal.
• Ozone representation using data assimilation.
• Sensitivity studies using the adjoint model.
• Many other research projects.

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Tentative group of model species for CHIMERE
model running
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Conclusion It is the first attempt of the team
to run CHIMERE for MICS-Asia phase II.
Capabilities to run other models such as
Models-3/CMAQ are also under development. The
try will continue and more extensive results are
expected to be shown in the near future.
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Note Emission database for South East Asia is
also getting developed through Southeast Asia
Regional Committee For a global change System for
Analysis, Research and Training (SARCS-START)
project title Estimation of pollutant
emissions from biomass-burning in Mekong River
Basin Sub-Region (Thailand, Cambodia, Laos and
Vietnam), led by Dr. Savitri Garivait of
the Joint Graduate School of Energy and
Environment (JGSEE), Bangkok.