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Instrument: TIM : Total Irradiance Monitor
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Associated Platforms

Spectral/Frequency Information
Wavelength Keyword: Visible
Number Channels: 1

Wavelength Keyword: Ultraviolet

Wavelength Keyword: Near Infrared

Related Data Sets
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[Source: GLORY project home page, ]

The TIM will collect high accuracy, high precision measurements of total solar irradiance using an active cavity radiometer that monitors changes in incident sunlight to Earth's atmosphere.

Changes in both the solar irradiance and in the composition of the atmosphere can cause global climate change. Solar irradiance is a purely a natural phenomenon, while the composition of the atmosphere is strongly influenced by the byproducts of modern industrial societies. Over the past century, the average surface temperature of Earth has increased by about 0.5 degrees Celsius.

The TIM is a heritage-design instrument that was originally flown on the SORCE satellite launched in January 2003.

Online Resources

Instrument Logistics
Data Rate: 713 bps
Instrument Start Date: 2003-01-25
Instrument Owner: USA/NASA