A regional chemistry and transport modeling system (Choi et al.
Zeng et al. [2003,
2006], Wang et al. ,
Zhao et al., )
is used to provide 48-hour
the concentrations of ozone and its precursors over the United
States. Meteorological forecast is conducted using the
NCAR/Penn State MM5
model. The regional chemistry and transport model simulates the
sources, transport, chemistry, and deposition of 24 chemical
tracers. The lateral and upper boundary conditions of trace gas
concentrations are specified using the monthly mean output from
global GEOS-CHEM model. The initial and boundary
conditions for meteorological fields are taken from the NOAA
has been operational since August, 2003. If you find the
forecasts useful, please let us know. Send your comments or
DISCLAIMER: The forecasts are currently
conducted only for the academic interests of
our research group. You are free to distribute these results
as long as they are unmodified. Any risks are solely assumed by
Previous forecasts for
intensive field experiments
(Arctic Research of the Composition of the Troposphere from
Aircraft and Satellites) forecast
Three products are provided.
(1) Processed tropospheric column BrO from OMI and GOME2
(2) Meteorological forecast using the polar version of MM5
(output at surface, 800, 500, and 300 hPa).
(3) 48-hour forecasts of boundary layer ozone and pseudo
BrOx tracers (output at surface, 300, 500, and 800 m).
More information on the model used can be
found in the papers by Zeng et al. [2003,
2005 forecast of meteorology, chemicals,
and backtrajectories using polar MM5 and RAQAST. ECMWF output is
used in polar MM5. The forecast supports the ANTCI mission and
will end in January 06.
We conducted two versions of
forecast to support the ANTCI mission over Antarctica. The
regular and low NOx forecasts used different surface
and lightning NOx emissions. The initial and boundary
conditions were from the ECMWF
forecasts. Both ended in January, 2004.