Impacts of Future NOx and CO Emissions on Regional Chemistry and Climate over Eastern China |
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| Authors: | WANG Geli YANG Peicai LIU Chuanxi LIU Yi and LU Daren |
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| Institution: | Key Laboratory of Middle Atmosphere and Global Environment Observation, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029,Key Laboratory of Middle Atmosphere and Global Environment Observation, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029,Key Laboratory of Middle Atmosphere and Global Environment Observation, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029,Key Laboratory of Middle Atmosphere and Global Environment Observation, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029,Key Laboratory of Middle Atmosphere and Global Environment Observation, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029 |
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| Abstract: | A coupled chemical/dynamical model (SOCOL-SOlar Climate Ozone Links) is
applied to study the impacts of future enhanced CO and NOx emissions
over eastern China on regional chemistry and climate. The result shows that
the increase of CO and NOx emissions has significant effects on
regional chemistry, including NOx, CO, O3, and OH concentrations.
During winter, the CO concentration is uniformly increased in the northern
hemisphere by about 10 ppbv. During summer, the increase of CO has a
regional distribution. The change in O3, concentrations near eastern
China has both strong seasonal and spatial variations. During winter, the
surface O3, concentrations decrease by about 2 ppbv, while during summer
they increase by about 2 ppbv in eastern China. The changes of CO, NOx,
and O3, induce important impacts on OH concentrations. The changes in
chemistry, especially O3, induce important effects on regional climate.
The analysis suggests that during winter, the surface temperature decreases
and air pressure increases in central-eastern China. The changes of
temperature and pressure produce decreases in vertical velocity. We should
mention that the model resolution is coarse, and the calculated
concentrations are generally underestimated when they are compared to
measured results. However, because this model is a coupled
dynamical/chemical model, it can provide some useful insights regarding the
climate impacts due to changes in air pollutant emissions. |
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| Keywords: | regional chemistry and climate NOx and CO emissions eastern China |
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