The U.S. National Science Foundation's (NSF's) Ultraviolet Spectral Irradiance Monitoring Network (UVSIMN) has
been measuring global UV irradiance at seven locations in Antarctica, South America, Southern California, and the Arctic,
starting in 1988. Data products include spectra of global (sun and sky) irradiance, sampled quarter-hourly between
280 and 600 nm; integrated irradiance (e.g., UV-B, UV-A); biologically effective dose-rates (e.g., the UV Index); total
ozone; effective albedo; cloud optical depth; actinic flux; photoloysis rates; and complementing spectra calculated with a
radiative transfer model. Data are disseminated via the project's website www.biospherical.com/NSF. During the last
year, data have also been submitted to international data repositories, including (1) the World Ozone and UV Data Center
(WOUDC), which is part of the World Meteorological Organization's Global Atmosphere Watch (GAW) program;
(2) the Cooperative Arctic Data and Information Service (CADIS), which supports the Arctic Observing Network
(AON), an NSF initiative for the International Polar Year (IPY); and (3) the SeaWiFS Bio-optical Archive and Storage
System (SeaBASS), which serves NASA's calibration and validation activities for ocean-viewing satellites. We also
plan to submit a subset of the dataset to (4) the Network for the Detection of Atmospheric Composition Change
(NDACC). The main objective of NDACC is to further understanding of stratospheric changes to the troposphere.
UVSIMN data have been adjusted to better serve the needs of these diverse research communities. This paper details the
background, format, and volume of these new datasets.