TCTE Level 3 Total Solar Irradiance Daily Means V002 (TCTE3TSID) at GES DISCEntry ID: TCTE3TSID_002
Abstract: The Total Solar Irradiance (TSI) Calibration Transfer Experiment (TCTE) data set TCTE3TSID contains daily averaged total solar irradiance (a.k.a solar constant) data collected by the Total Irradiance Monitor (TIM) instrument covering the full wavelength spectrum. The data are normalized to one astronomical unit (1 AU).
The TCTE/TIM instrument measures the Total Solar Irradiance (TSI), 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 (ppm, 1 ppm=0.0001% at 1-sigma), and a precision and long-term relative accuracy of 10 ppm per year. Due to the small size of these data and to maximize ease of use to end-users, each delivered TSI product contains science results for the entire mission in an ASCII column formatted file.
Early in the mission, between Dec 2013 and May 2014, TCTE acquired daily measurements to establish good overlap with the SORCE TIM. From May 2014 to Dec 2014, the TCTE measurements were reduced to weekly, which greatly subsample the true solar variability, and thus have little value for solar research. Beginning in Jan 2015, daily obervations were resumed.
2015-04-21: Version 2 applies dark and degradation corrections to the data.
2015-01-20: Version 1 is the first public release of TCTE TIM data. Estimated absolute accuracies are 0.1% (1000 ppm) and will be improved in future versions as additional corrections are applied.
Data Set Citation
Dataset Originator/Creator: Kopp, G.
Dataset Title: TCTE Level 3 Total Solar Irradiance Daily Means V002
Dataset Series Name: TCTE3TSID
Dataset Release Date: 2015-04-25T00:00:00.000Z
Dataset Release Place: Greenbelt, MD, USA
Dataset Publisher: Goddard Earth Sciences Data and Information Services Center (GES DISC)
Data Presentation Form: Digital Science Data
Dataset DOI: 10.5067/TCTE/TIM/DATA303Online Resource: https://disc.gsfc.nasa.gov/datacollection/TCTE3TSID_002.html
Start Date: 2013-12-13
Data Set Progress
Distribution Media: Online Archive
Distribution Size: 130.0 KB
Distribution Format: ASCII
Phone: (303) 735-0934
Fax: (303) 492-6444
Email: Greg.Kopp at lasp.colorado.edu
Laboratory for Atmospheric and Space Physics University of Colorado 1234 Innovation Dr.
Province or State: CO
Postal Code: 80303-7814
Role: METADATA AUTHOR
Email: James.Johnson at nasa.gov
NASA Goddard Space Flight Center Code 610.2
Province or State: MD
Postal Code: 20771
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2015-04-21
Last DIF Revision Date: 2018-11-30