olar radiation below 300 nm is completely absorbed by the Earth's atmosphere
and becomes the dominant direct energy input. This energy establishes the
composition, temperature and dynamics. Even small changes have an important
impact on atmospheric processes and trends. Therefore SOLSTICE goals are
to:
Make daily measurements of the solar ultraviolet irradiance (120 to
420 nm with 
/
1000)
The measurement should have an absolute accuracy better than ±5%
The measurement should have a relative accuracy better than 1%
Measure solar variations on all time scales