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Laboratory for Atmospheric and Space Physics

TSI Calibration Transfer Experiment (TCTE)

The TCTE includes a Total Irradiance Monitor to measure total solar irradiance (TSI). This new instrument is similar to that providing data from NASA’s SORCE mission since 2003, and will be continuing those measurements beyond the SORCE mission. The TCTE was launched on 19 Nov. 2013 as part of the Air Force’s STPSat-3 mission and is intended for a 1.5 year mission. Solar measurements commenced after spacecraft and instrument commissioning, and TCTE TSI data from Dec. 2013 to the present are available via this site.

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