Abstract
Our project, the DIAS (Data Integration and Analysis System) started in 2006, has a purpose of constructing data infrastructure that can integrate earth observation data, numerical model outputs, and socio-economic data effectively. From October 2010, we have released research data and research result data in the DIAS. The 4-years increased amount of released data have improved the environment that we provide research data to the people not related to our project. Limited term project is difficult to continue to release research data in a sustained manner. It is necessary to establish a management system for long-term research data in anticipation that the DIAS is transferred to the long-term operational system in the future. In this paper, we describe the current status of the DIAS data release, and discuss the issues for sustainable maintenance of data and metadata in the DIAS.
