have incorporated an aerosol module into the NASA GMAO GEOS-4 general
circulation model and data assimilation system. Aerosols are
particles and droplets suspended in the atmosphere and transported by
the winds. Including the aerosols in the GEOS-4 model allows us
to simulate their global distributions. Aerosols play important
roles in Earth’s climate system, by reflecting and absorbing
solar and thermal radiation, by modifying the properties of clouds, and
by interacting chemically with other constituents in the atmosphere.
a part of this research we are forecasting the global distributions of
tropospheric aerosol species such as dust, smoke, sulfate, and seasalt
particles. The purpose of these chemical weather forecasts is to
support decision making in NASA field missions. Potential
applications of this work are to climate and air quality studies.