Abstract
A new geospatial data sharing/overlay system, CEReS Gaia, has developed. The purpose of the system development is to promote land surface environmental studies. The system has the following features; a) internationally unlimited expansion of servers, b) multi-language capability (currently, only English), c) free access without user registration, d) data upload/download by registered users, e) capability to overlay user's data on other registered data, f) option of unlimited or selective data distribution. The system operation has started in April 2012. This work was supported by KAKENHI (22220011), Grants-in-Aid for Scientific Research by MEXT Japan.