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

地球大气辐射、云和降水场大尺度结构研究

基本信息

批准号：
08241104
负责人：
NAKAJIMA Teruyuki
金额：
$ 47.04万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research on Priority Areas
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1998
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-08241104/
关键词：
atmosphere water vapor clouds precipitation aerosol radiation general circulation remote sensing

项目摘要

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.

经过三年的努力，项目取得了以下成功成果：气溶胶产品：检索了全球首个气溶胶粒径指数的全球分布。发现了中纬度工业气溶胶和热带生物质燃烧气溶胶。云产品：获得独特的云微物理参数全球分布。发现在大的大陆周围，云粒子半径有系统地减小。通过产品(1)和(2)，首次获得了云-气溶胶相互作用现象的全球平均强度。这个结果对更好地模拟云气溶胶现象非常有用。地表能量收支产品：从GMS卫星估算每一小时的地表辐射能收支。该产品的性能优于国际卫星云气候学项目（ISCCP）产品。对能量流，特别是非绝热能量流与大气结构的关系有了更好的认识。结果表明，NCEP客观分析资料和ERBE卫星资料估算的极向能量输运值优于80年代的估算值，但仍不足以准确估算地表辐射能通量。低频和高频涡旋的长期能量输运是互补的，形成了中纬度冬季动力场。卫星数据档案：CCSR（东京大学气候系统研究中心）和CeRES（千叶大学环境遥感研究中心）建立了GMS、AVHRR、SSM/I等十年尺度的卫星数据库。该数据库可以在网络环境中使用。未来遗产：几位年轻有为的科学家和学生已经被培养出来，以进一步发展本研究的主题。