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[B-1.1 Study on the evaluation of the effects of atmospheric aerosols and water substances for the global scale climate change.]

[Contact Person]

Yukari N. Takayabu
Senior Researcher, Atmospheric Physics Section
Atmospheric Environment Division
National Institute for Environmental Studies
16-2, Onogawa, Tsukuba 305-0053 Japan
Phone: +81-298-50-2472, Fax: +81-298-51-4732
E-mail: yukari@nies.go.jp

[Total Budget for FYl997-FY1999]

31,261,000 Yen (FY1999; 10,790,000 Yen)

[Abstract]

     In order to reduce the uncertainties in the future projection of the global climate, we study the effects of aerosols and clouds in the atmosphere, utilizing climate model experiments as well as observational data analyses.
     As a result, we established a sophisticated technique to treat the primary four aerosol species (sulfate, carbon, soil dust, and sea salt) in the troposphere both in the numerical model and in the satellite data retrievals. The aerosol model was also improved including the indirect radiative effects of aerosols. Finally, based on the above achievements, we performed climate change experiments with a new set of aerosol emission scenario (IPCC, 2000) utilizing the CCSR/NIES climate model and discussed the differences in the future projections of climate change among the different scenario runs.

[Key Words]

Aerosol, Clouds, IPCC Scenario, Climate Model, Satellite Remote Sensing, Indirect Effects