Skip to content. | Skip to navigation

Personal tools
You are here: GES DISC Home Data Releases Announcement: New Total Solar Irradiance data from TCTE

Announcement: New Total Solar Irradiance data from TCTE

Total Solar Irradiance (TSI) Calibration Transfer Experiment (TCTE) orbits on Air Force satellite

Announcement:  New Total Solar Irradiance data from TCTE

TCTE's TIM instrument is on the Air Force STPSat-3 satellite, shown here at Ball Aerospace being prepared for launch.

Announcement:  New Total Solar Irradiance data from TCTE

Data from the Total Solar Irradiance (TSI) Calibration Transfer Experiment (TCTE) have been released to the public. The current version is 2. TCTE is managed by the Laboratory for Atmospheric and Space Physics (LASP) at the University of Colorado, Boulder. The Principal Investigator for TCTE is Dr. Greg Kopp.

TCTE was launched on Nov. 13, 2013 aboard the Air Force’s STPSat-3 spacecraft. It includes a Total Irradiance Monitor (TIM) instrument, similar to the one flown on the SOlar Radiation and Climate Experiment (SORCE) mission.  TIM was designed and built for measuring TSI and monitoring changes in incident sunlight to the Earth's atmosphere, using an ambient temperature active cavity radiometer to a designed absolute accuracy of 350 parts per million, and a precision and long-term relative accuracy of 10 ppm per year.

There are two TCTE data collections available: daily and 6-hourly averaged total solar irradiances covering the full wavelength spectrum. The data are normalized to one astronomical unit (1 AU). Also included in the data set are irradiances normalized to time-varying earth distance from the sun, which are useful for climate modeling applications.

The figure below shows the most recent TCTE TSI data, through June 19, 2015 (the date of publication of this announcement):

 

TCTE TIM 3-month TSI time-series



For more information about the TCTE mission and accessing the data, please see the

GES DISC Solar Irradiance page at http://disc.sci.gsfc.nasa.gov/solar_irradiance

TCTE homepage at http://lasp.colorado.edu/home/tcte/


Questions or comments? Email the NASA GES DISC Help Deskgsfc-help-disc@lists.nasa.gov

Document Actions
NASA Logo - nasa.gov
NASA Privacy Policy and Important Notices
Last updated: Jun 19, 2015 12:05 PM ET
Top