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Table 1

Historical training datasets used to determine the EUVS Model coefficients. The Purpose column indicates if the data are used to compute the long-term and/or short-term model coefficients, or to cross-calibrate the historical data with the GOES-16 EUVS Measurements.

Data source Purpose Data level Version Wavelength (nm) Sampling (nm) Accuracy (%)
SORCE/SOLSTICEa Long-term, Cross-calibrate 3 15 117–141 0.1 5–8
TIMED/EGSb Long and Short-term 3 12 26–117 1 5–20
TIMED/XPSc Long-term 3 12 5–26 1 20
SDO/MEGSd Long and Short-term 3 6 6–106 0.1 1–7
Bremen composite Mg II Indexe Long-term, Cross-calibrate Composite 5 275–285 N/A 0.3i
FISM-EVEf Cross-calibrate Daily average 1 28–31 0.1 5–10
GOES-15/EUVS Eg Short-term Minute average 4 121.6 Lyman-α 2h
a

Solar Radiation and Climate Experiment/SOLar-STellar Irradiance Comparison Experiment (McClintock et al., 2005).

b

Thermosphere Ionosphere Mesosphere Energetics and Dynamics/EUV Grating Spectrograph (Woods et al., 2005).

c

TIMED/XUV Photometer System (Woods et al., 2005).

d

Solar Dynamics Observatory/Multiple EUV Grating Spectrographs (Woods et al., 2010).

f

FISM-EUV Variability Experiment (Thiemann et al., 2017a; Chamberlin et al., 2018).

h

Uncertainty is with respect to scaling to SORCE/SOLSTICE absolute calibration.

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