TIMED

TIMED (for Thermosphere Ionosphere Mesosphere Energetics and Dynamics is a satellite to study the effect of Solar electromagnetic-radiation and solar wind on the Earth's upper atmosphere. It was launched in 2001 and has remained in operation, yielding data covering a complete 11-year solar cycle and most of another. Instruments:

• GUVI - Global Ultraviolet Imager.
• SEE - Solar Extreme Ultraviolet Experiment.
• TIDI - TIMED Doppler Interferometer.
• SABER - Sounding of the Atmosphere using Broadband Emission Radiometry.