Maintained by: Solar Terrestrial Physics Division, Danish Meteorological Institute.

Summary of Data Held:

Digital data: Hourly values from 223 observatories, 1 minute values from some observatories, Geomagnetic indices Kp, ap, PC.

Analog data: Normalrun magnetograms, geomagnetic hourly values, rapidrun magnetograms, geomagnetic indices, lists of special events, Earth current data. The geomagnetic data holdings include data from 406 observatories mainly from the IGY (1957) onwards, also data from the Second Polar Year, 1932-1933. Most data are held as microfilm, microfiche, publications and sheets.

User Services: The WDC is open to visitors, who have access to its facilities. Digital hourly values, recent 1 minute values, and geomagnetic indices Kp, ap and PC, and catalogue of data holdings, are available through anonymous ftp:

ftp.dmi.min.dk in dir: pub/Data/WDCC1

Data Products, Publications: PC index. Data catalog in joint WDC-Europe catalog UAG-92.