The WRMC is the central archive of the BSRN. It was established in1992 at ETH Zurich. The objective of the archive is to provide the best possible quality for short- and long-wave surface radiation fluxes. These readings are taken from a small number of selected stations, in contrasting climatic zones, together with collocated surface and upper air meteorological data and other supporting observations. Originally, the archive was used only from climate scientists. Meanwhile, the WRMC also gets used more and more in the framework of solar energy research. The typical average interval for radiation data is one minute. The parameters offered: global, diffuse, direct, long-wave down, reflex, long-wave up, UV radiation, synoptic observations, upper air soundings, total ozone, ceilometer data, and radiation measurements from towers. More than 8700 months (~ 725 years) of high quality radiation data submitted from 59 stations since 1992 are archived. BSRN data are available for non commercial users for bona fide research purposes at no cost. For details see: http://bsrn.awi.de/data/conditions-of-data-release.html. All data can be retrieved interactively by any registered user from a ftp-server and the Publishing Network PANGAEA (http://www.pangaea.de/search?q=BSRN).