Remarks
In 2009, the network was split into Northern and Southern hemisphere components. The network sites at Barrow and Summit became part of NSF's Arctic Observing Network (www.aoncadis.org). BSI continues to be responsible for the operation of these two sites. In 2010, NOAA's Global Monitoring Division took over the helm from the NSF to oversee operation of the instruments at the South Pole, McMurdo Station, and Palmer Station. BSI continues to prepare and quality-control the data of the three sites. Data of the network are now also available from the following repositories: World Ozone and UV Data Center (WOUDC); Advanced Cooperative Arctic Data and Information Service (ACADIS); NOAA Antarctic UV Monitoring Network; Data archive of the Network for the Detection of Atmospheric Composition Change (NDACC); SeaWiFS Bio-optical Archive and Storage System (SeaBASS)