To promote science and technology and to become the center of advanced research and higher education based on its national institutes and university, a new science city (Tsukuba Science City) was established approximately 60 km northeast of Tokyo, in the 1970s ( The CEOP Tsukuba Reference Site (CTRS) project started in 2007 with the support of grants-in-aid for scientific research from the Japan Society for the Promotion of Science (CEOP Tsukuba DB, No. 198052).  The aim of this project is the archiving of the hydrometeorological data observed by the multiple institutes and university in Tsukuba Science City, and to link them to the domestic and international science community with a standard format within the framework of the CEOP project ( The following institutes and university are members of the CTRS project at present : Meteorological Research Institute (MRI), Terrestrial Environment Research Center (TERC) and Mt. Tsukuba Station (MtTSUKUBA) of the University of Tsukuba (UT).  National Research Institute for Earth Science and Disaster Prevention (NIED), National Institute for Agro-Environmental Sciences (NIAES), National Institute for Environmental Studies (NIES), and National Institute of Fruit Tree Science (NIFTS).

Aerological data and radiation data observed at Japan Meteorological Agency / Aerological Observatory (JMA/AO) are also archived via home page of Baseline Surface Radiation Network (BSRN). This is the first among various projects under taken in Japan such as constructing a database observed by different key institutes distributed in one meso-scale area  managed by their own funding.  We expect that the data will be utilized for multiple hydrometeorological research work, including the verification of satellite estimates and numerical predictions, process studies of land-atmospheric interactions, evaluation of urbanization, and for education and policy-making in the local community and its functions.

Ueno et al.(2008); Establishment of CEOP Tsukuba Reference site, Tsukuba Geoenvironmental Sciences, vol. 4, 17-20. (pdf)