PICARD/SOVAP TSI source notes

Dataset: PICARD/SOVAP Total Solar Irradiance composite (Meftah et al. 2016)
Instrument: SOVAP (Solar VAriability and Planetary temperatures) on PICARD
Platform: PICARD satellite (CNES, 2010-2014)

Published as: CDS VizieR catalog VI/152
Reference paper:
  Meftah, M., Hauchecorne, A., Irbah, A., et al. (2016)
  "SOVAP/Picard, a spaceborne radiometer to measure the total solar irradiance"
  Metrologia 53, 1 (2016). DOI: 10.1088/0026-1394/53/1/1

Raw file URLs:
  composit.dat: https://cdsarc.cds.unistra.fr/ftp/VI/152/composit.dat
  ReadMe:       https://cdsarc.cds.unistra.fr/ftp/VI/152/ReadMe
  Catalog:      https://cdsarc.cds.unistra.fr/viz-bin/cat/VI/152

Local raw files:
  tsi_raw/picard_sovap/raw/composit.dat
  tsi_raw/picard_sovap/raw/ReadMe

Coverage: 2010-07-22 to 2014-03-02 (3756 rows at 6-hour cadence, 980 unique dates)
File format: space-separated "YYYY-MM-DD HH:MM:SS TSI e_TSI n channel"
  Col 1-2: date and time (UTC)
  Col 3:   TSI (W/m^2, ~1362)
  Col 4:   uncertainty (W/m^2)
  Col 5:   n (number of measurements in 6-hour window)
  Col 6:   channel number

Aggregation: 6-hour values averaged to daily means (taking mean of up to 4 values/day)

Attribution:
  Meftah et al. 2016, Metrologia 53, 1. DOI: 10.1088/0026-1394/53/1/1
  Data provided via CDS VizieR (Strasbourg), catalog VI/152.
  Acknowledge PICARD/SOVAP team and CNES.

Downloaded: 2026-06-04 via CDS VizieR HTTPS (bypassing unavailable PICARD SITools instance)