24 Dec 10
SORCE's Solar Spectral Surprise →
NASA’s Solar Irradiance Monitor is showing the Sun is having slow recovery from the last solar cycle, with output shifting towards the cooler end of the spectrum:
Between 2004 and 2007, the Solar Irradiance Monitor (blue line) measured a decrease in ultraviolet radiation (less than 400 nanometers) that was a factor of four to six larger than expected (black line). In the visible part of the spectrum (400 to 700 nanometers), SIM showed a slight increase in comparison to what was expected.
