SATIRE-S TSI reconstruction \u2014 source record
=====================================================

Dataset:   SATIRE-S total solar irradiance reconstruction (latest)
Version:   20260521
Provider:  Max Planck Institute for Solar System Research (MPS), Goettingen
File:      SATIRE-S_TSI_latest.txt

Primary URL (HTTP):
  http://www2.mps.mpg.de/projects/sun-climate/data/SATIRE/SATIRE-S/SATIRE-S_TSI_latest.txt

Retrieved: 2026-06-04

File format:
  Space-separated text with header comment lines prefixed by ';'.
  Columns:
    1: Date in Julian day
    2: Reconstructed TSI (W m^-2)
    3: Lower uncertainty bound of TSI
    4: Upper uncertainty bound of TSI
    5: Source indicator for the underlying data
       0: Indices of solar magnetic activity
       1: Meudon Ca II K spectroheliograms
       2: SFO Ca II K filtergrams
       3: Rome/PSPT Ca II K filtergrams
       4: Mount Wilson Magnetograph
       5: NASA/NSO 512-channel diode array magnetograph
       6: NASA/NSO spectromagnetograph
       7: SoHO/MDI
       8: SDO/HMI

Role in this project:
  SATIRE-S is a semi-empirical reconstruction of TSI from solar surface
  magnetism (sunspots and faculae) constrained by magnetograms and Ca II K
  observations. It is a reconstruction/model context product, distinct from
  the direct mission streams and from the merged benchmark composites.

References:
  [1] Chatzistergos, T., Krivova, N.A., Solanki, S.K., Yeo, K.L. (2025).
      Revisiting the SATIRE-S irradiance reconstruction: Heritage of Mt Wilson
      magnetograms and Ca II K observations. A&A. DOI 10.1051/0004-6361/202554044
  [2] Yeo, K.L., Krivova, N.A., Solanki, S.K., Glassmeier, K.H. (2014).
      Reconstruction of total and spectral solar irradiance from 1974 to 2013
      based on KPVT, SoHO/MDI and SDO/HMI observations. A&A 570, A85.
      DOI 10.1051/0004-6361/201423628