Estimation of the impact of natural and anthropogenic aerosols on air quality and climate change in East Asia using a regional model
We have developed a one‐way nested global regional chemical transport model (CTM) to estimate the radiative and chemical impact of natural and anthropogenic aerosols in East Asia. The global CTM is based on the CHASER (chemical atmospheric global general circulation model for study of atmospheric environment and radiative forcing) model, while the regional part is based on the WRF (weather research and forecasting) / Chem model. The model is online model, that means feedbacks among gaseous chemical species, aerosols, radiation, and dynamics are taken into account in the model. Emissions of mineral dusts and sea‐salt aerosols are estimated by using the ground‐level wind fields and land‐surface temperature and moisture calculated at each time step of the model. Temporal variation of PM 10 calculated by the model is qualitatively reproduced the observed variation at Beijing, and shows clear increase following to the dust event in April 2006. The source region of dust aerosol event in this period was estimated to be Gobi and Taklimakan desert. The radiative impact of aerosols on shortwave radiation at surface and the top of atmosphere is also estimated, and it is found that the impact of BC is quite large to the shortwave radiation at the surface.
Aerosol mineral dust surface ozone regional chemical transport model
Masayuki Takigawa
Japan Agency for Marine‐Earth Science and Technology,3173‐25 Showa‐machi,Kanazawa‐ku,Yokohama,Kanagawa 236‐0001,JAPAN.
国际会议
西安
英文
5-9
2011-08-17（万方平台首次上网日期，不代表论文的发表时间）