Publication and Distribution 

               The    World    Radiation   Data  Centre  has  been   publishing   surface
               radiation    data    collected    from    the    world    radiometric   network.
               The issue  is "Solar Radiation and Radiation  Balance  Data. The  World
               Network"   presenting   data  in  tabular formats. The  first monthly issue
               appeared   in  1964.
               Since  1993   the   publication   has   been  issued   four  times   a  year.
               Distribution of "Solar Radiation and Radiation Balance Data.  The  World
               Network"     bulletins has  been   organized   among    the   national
               meteorological    services    and    other    institutions   responsible    for
               submission of solar radiation data to the WRDC.