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Human activities (such as the intensive use of
fossil fuel, urbanization, deforestation, agricultural expansion or
intensification) have been imposing significant perturbations to the
atmosphere. I am interested in a wide range of research topics in global
environmental change, especially the interactions among climate, atmospheric
chemistry, ozone and aerosol air quality, land use/land cover and
biosphere-atmosphere exchange. Our
current research focus on the following topics: v Interactions
among climate, atmospheric chemistry, air quality, and land use/land cover v Impacts
of global change on atmospheric chemistry and long-range transport of air
pollution v Anthropogenic
perturbations to the atmosphere and implications for environmental
sustainability v Atmosphere-biosphere
interactions, especially in the context of global change v Impacts
of aerosols on the global hydrological cycle Our research heavily involves the development
and application of the GEOS-Chem
global chemical transport model. For
example, we investigated the potential effects of changing anthropogenic
emissions and climate on tropospheric ozone and ozone air quality in the
United States. It is demonstrated that the changes in anthropogenic emissions
outside of the United States impose another challenge by enhancing the
hemispheric transport of air pollution and hence background ozone in the United
States. We also found that the future climate change can degrade the U.S.
ozone air quality by affecting the air pollution meteorology such as
temperature and ventilation. The following plots shows the simulated surface
ozone for present-day as well as the effects from changes in anthropogenic
emissions and climate. More details can be found in Wu et al.,
[2008].
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For a list
of the publications related to the above research directions, check out our publications. |