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| Modeling of Global Tropospheric Chemistry | |
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Tropospheric chemistry contributes to a series of issues in
the earth system, such as air pollution, climate change, and ecological
destruction. Modeling plays an important role in studying tropospheric
chemistry by identifying processes, interpreting observations, assessing
impacts, and making projections. We develop and use model schemes based on
the GEOS-Chem global model framework to study the oxidants, gases,
aerosols, and fundamental chemistry in troposphere. Recent related topics
include: |
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| Aerosol Absorptions and their Impacts on Climate | |
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Aerosols are important due to their adverse effects on
human health and their direct and indirect radiative effects on climate.
While all aerosols scatter light, some aerosols are also able to absorb
light. These absorptions are significant and very uncertain factors
contributing to global climate forcing. We focus on understanding the
sources, lifecycles, and absorption properties of atmospheric aerosols.
Recent related topics include: |
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| Regional Air Quality in Asia | |
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Air pollution in Asia is among the worst in the world and have
significant impacts on public health and economy. Exposure to particulate matter
(PM) and ozone, the major two air pollutants, are responsible for millions of
deaths per year. Formations of these pollutants are largely affected by complex
chemical reactions and meteorological processes. We combine model simulations
and measurement analysis to explore the chemical mechanisms controlling the
formation of air pollutants, and make recommendations for air pollution control
strategies. Recent related topics include: |
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