Table 3.
Comparison of different TSI reconstructions with the TSI composite of Montillet et al. (2022).
| Model | Rc daily | Rc 81-day | χ2 | Trend [mW m−2 yr−1] |
|---|---|---|---|---|
| ISNv2 | 0.79 | 0.91 | 0.079 | −4.39 |
| CEA17, GSN | 0.79 | 0.92 | 0.08 | −1.94 |
| Wu18 | 0.79 | 0.89 | 0.12 | −10.34 |
| CH25 | 0.85 | 0.95 | 0.043 | 0.67 |
Notes. Shown are the Pearson correlation coefficients for the daily and 81-day smoothed series, the chi-square values, and the trends in the daily residuals for our ISNv2 model, our CEA17 GSN model, the TSI reconstruction of Wu et al. (2018), and that of Chatzistergos et al. (2025a). These values were calculated over the period 1980–2017, where data from all five datasets overlap.
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