Solar Irradiance

Data source:

• 1976/01/05 to 2003/02/28 Physikalisch Meteorologisches Observatorium Davos, World Radiation Center
• 2003/03/01 to 2020/02/25 University of Colorado Solar Radiation & Climate Experiment. Data are matched using the 2003/03/01 to 2004/02/29 period.
  The above web page writes, "End of Operations (25 Feb. 2020): The SORCE instruments and spacecraft were powered off on 25 Feb. 2020, ending a very successful 17-year mission."
• 2018/01/11 to 2023/01/28: GES DISC

  Long-Term Sunspot Numbers

  

  Data source:WDC-SILSO, Royal Observatory of Belgium, Brussels Note from SILSO: Since July 1st 2015, the original Sunspot number data are replaced by a new entirely revised data series. On this occasion, the data are presented in a new array of files, containing additional values that were not present in the original series. For proper tracking of those changes, the present version is numbered 2.0. (Data are through January 2023, Last modified: 2023/02/01