A study of the large-scale structure of radiation, clouds and precipitation fields of Earth's atmosphere

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The following successful results have been attained after the three year effort of the project :1. Aerosol product : The world's first global distribution of aerosol size index was retrieved. Middle latitude industrial aerosols and a tropical belt of biomass burning aerosols were found.2. Cloud product : Unique global distributions of cloud microphysical parameters were obtained. It is found that the cloud particle radius systematically decreases around large continents.3. Through the products (1) and (2), the strength of cloud-aerosol interaction phenomenon on global average was obtained for the first time. This result is extremely useful for better modeling the cloud-aerosol phenomenon.4. Surface energy budget product : The surface radiative energy budget was estimated from the GMS satellite for every one hour. Such a product showed better performance than the ISCCP (International Satellite Cloud Climatology Project) products.5. Better understanding of energy flow, especially relationship between diabatic energy flow and atmospheric structure, was obtained. It is found that an estimation of poleward energy transportation from NCEP objective analysis data and ERBE satellite data is better than that of 80's, but still not sufficient for accurate evaluation of the surface radiative energy flux. It is also found that the long-term energy transport by low frequency and high frequency eddies vary complementarily contributing to the middle latitude winter dynamical field.6. Satellite data archive : CCSR (Center for Climate System Research, the University of Tokyo) and CeRES (Center for Environmental Remote Sensing, the Chiba university) have constructed ten year scale satellite data bases of GMS, AVHRR, SSM/I etc.. The database can be used in the network environment.7. Future heritage : Several young promising scientists and students have been raised for performing further development of the subjects in this study.