Researcher's homepage




Chemical Transport Modeling Group

Inter-continental long-range transport and chemical transformation

Using a global chemical transport model, mechanisms of ozone formation in each continent of Europe, North America and Asia, and inter-continental long-range transport between these continents are elucidated. Through these studies, scientific knowledge necessary for the discussion of how to reduce the emissions form Europe, North America and Asia for decreasing the concentration of tropospheric ozone in the northern hemisphere will be accumulated.

Figure: Global Chemical Weather Map: Example of world chemical weather map calculated by global chemical weather forecast system. It is seen that carbon monoxide (yellow) is reached from Europe to East Asia by inter-continental transport.

Correlation between air quality change and meteorology/climate change

The impact of spatial distribution and variability of air pollutants such as aerosols and ozone in a continental scale on climate, and inversely how the climate change affect to air pollution will be analyzed by using a coupled chemical transport/climate model. Relation of variability of ozone to the meteorological conditions will be studied focusing on East Asia, and a model for higher precision chemical weather forecast will a be developed.
Figure: Annual and zonal mean ozone distribution predicted for 2100 with the A2 scenario in the control experiment (with emission changes only) (a); climate change (warming) induced changes in the ozone distribution (shown as the warming experiment minus the control experiment) for 2100 (b). In (b), the zonal mean tropopause is also shown for 2100 (solid line) and 1990 (dashed line).