List of former WDC data repositories in Japan

WDC for Airglow
Current name: WDC for Airglow     
Host Organization: National Astronomical Observatory of Japan
Data Holdings: Zenith intensities of airglow measured at various observatories in Japan. The observing wavelengths are 5577 Å and 6300 Å lines of oxygen, sodium D-line (5890-96 Å), reference continua such as 5200-5300 Å, and OH molecular bands.  Digital data (not only from Japan but from all over the world) in the period of International Geophysical Year (IGY, 1957-58), International Geophysical Cooperation (IGC, 1959), and International Quiet Sun Year (IQSY, 1964-65) are available at NOAA/NGDC    
Website: https://solarwww.mtk.nao.ac.jp/en/wdc/airglow.html

WDC for Aurora
Current Name: WDC for Aurora
Host Organization: Institute of Polar Research    
Data Holdings: Auroral and associated data obtained by the Japanese Antarctic Expedition from 1957 to the present    
Website: http://polaris.nipr.ac.jp/~aurora/

WDC for Cosmic Rays
Current Name: WDC for Cosmic Rays
Host Organization: Institute for Space-Earth Environmental Research,  Nagoya University    
Data Holdings: Global cosmic-ray neutron monitor data (1-hour pressure-corrected and scale-adjusted counts, WDCCR) from 1953 to the present (138 stations in total). 
Website: https://cidas.isee.nagoya-u.ac.jp/WDCCR/

WDC for Geomagnetism,Kyoto
Current Name: WDC for Geomagnetism, Kyoto (WDS Regular Member)
Host Organization: Data Analysis Center for Geomagnetism and Space Magnetism, Kyoto University    
Data holdings: Normalrun magnetograms, rapidrun magnetograms, geomagnetic hourly values, normalrun tellurigrams, rapidrun tellurigrams, Earth current hourly values, geomagnetic indices, and lists of special events. Digital data, including geomagnetic hourly, 1 minute, and 1-sec values, and geomagnetic indices    
Website: http://wdc.kugi.kyoto-u.ac.jp/index.html

WDC for Ionosphere
Current Name: WDC for Ionosphere and Space Weather (WDS Regular Member)    
Host Organization: National Institute of Information and Communications Technology    
Data Holdings: Ionospheric Data in Japan, Ionospheric Data in the Antarctica Showa Station, Ionosonde data of NICT-operated Stations (Wakkanai, Kokubunji, Yamagawa, Okinawa, and Showa Station, Antarctica), Ionogram Database, Manually Scaled Parameters of NICT Ionogram, Catalogue of Ionospheric Data from 320 stations in the world, Handwritten ionospheric observation record(1936-1954), Historical Space weather Viewer (1978-1998), and Database of Solar Flare Prediction (Deep Flare Net)    
Website: https://wdc.nict.go.jp/IONO/wdc/index.html

WDC for Solar Radio Emission
Current Name: WDC for Solar Radio Emission
Host Organization: National Astronomical Observatory of Japan
Data Holdings: The total solar radio fluxes and the degree of circular polarization at  1, 2, 3.75, 9.4, 17, 35, 80 GHz (ca1978-present), Tables of the calibrated solar daily flux (1951-1994 at Toyokawa, 1964-1972@ at Mitaka, 1978- at Nobeyama), and the calibrated solar flux since 1987    
Website: http://solar.nro.nao.ac.jp/norp/index.html

WDC for Scientific Satellites    
Current Name: Data ARchives and Transmission System (DARTS)
Host Institution: Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency    
Data Holdings: The DARTS primarily archives high-level data products obtained by JAXA's space science missions in astrophysics (X-rays, radio, infrared), solar physics, solar-terrestrial physics, lunar and planetary science, as well as microgravity science data obtained by International Space Station. In addition, we archive related space science data products obtained by other domestic or foreign institutes and provide data services to facilitate the use of these data.    
Website: https://darts.isas.jaxa.jp/