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Contributors: N. Clerbaux (Royal Meteorological Institute of Belgium (RMIB)), A. Velazquez Blazquez (RMIB), E. Baudrez (RMIB), S. Dewitte (RMIB), S. Nevens (RMIB)
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Table 2-1: Evaluation of the adjusted individual timeseries with respect to C3S daily TSI composite. Anchor table2_1 table2_1
Instrument | Adjustment | Number of daily values | Bias | RMS | bc-RMS | Used in TCDR v2.0 (T) and/or ICDR v2.x (I) |
ERB | 0.993204 | 3287 | 0.042 | 0.184 | 0.179 | T |
ACRIM1 | 0.996232 | 3374 | -0.042 | 0.176 | 0.171 | T |
ERBS | 0.997864 | 5775 | -0.035 | 0.098 | 0.092 | T |
ACRIM2 | 0.998587 | 3502 | 0.041 | 0.141 | 0.135 | T |
DIARAD/VIRGO | 0.997241 | 8370 | -0.029 | 0.095 | 0.091 | T+I |
PMO06/VIRGO | 0. 997609 | 7566 | -0.021 | 0.090 | 0.087 | T |
ACRIM3 | 1.000938 | 3900 | 0.045 | 0.090 | 0.079 | T |
TIM/SORCE | 1.001216 | 6000 | -0.001 | 0.041 | 0.040 | T+I |
PREMOS | 1.001085 | 1120 | 0.010 | 0.118 | 0.117 | T |
SOVAP | 1.000518 | 1165 | 0.075 | 0.203 | 0.189 | T |
TIM/TCTE | 1.000633 | 1477 | 0.085 | 0.102 | 0.057 | T+I |
TIM/TSIS1 | 1.000450 | 1066 | 0.075 | 0.093 | 0.056 | T+I |
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Figure 2-1: Evaluation of the individual daily TSI timeseries for ERB, ACRIM-1, ERBS and ACRIM-2. The green curves show the data used in the C3S composite while the red parts show data discarded from the C3S composite. The blue and orange curves show the 'running mean' (121 days time period) of the individual instruments, respectively for the period kept/discarded from the composite. Black and brown curves show the C3S and NRL TSI v2 composites after '121 days running mean'.
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Table 2-2: Bias and RMS difference between the C3S and NRL v2 daily TSI composites. Anchor table2_2 table2_2
CDR | Number of daily values | Bias | RMS | bc-RMS |
TCDR | 14610 | 1.403 | 1.426 | 0.253 |
ICDR | 639 | 1.411 | 1.412 | 0.061 |
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Figure 2-4: Top: C3S daily TSI composite (green) and NRL TSI v2 composite (red). Bottom : difference between the C3S and NRL TSI v2 daily TSI composites (green). The 121-days running mean curves are also shown (black).
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Table 2-3: Bias and RMS difference between the C3S and SATIRE-S composites. Anchor table2_3 table2_3
CDR | Number of daily values | Bias | RMS | bc-RMS |
TCDR | 14199 | 1.340 | 1.371 | 0.287 |
ICDR | 502 | 1.546 | 1.547 | 0.052 |
Anchor figure2_5 figure2_5
Figure 2-5: Top: C3S daily TSI composite (green) and SATIRE-S reconstruction (red). Bottom : difference between the C3S and SATIRE-S daily TSI composites (green). The 121-days running mean curves are also shown (black).
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Total Solar Irradiance v2 | Total Solar Irradiance v3 | ||
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Percentiles | p2.5 p97.5 | 0.87 W/m² 1.83 W/m² | 0.130 W/m² 0.562 W/m² |
31.10.2020 - 31.03.2021 | 152/152 | ||
01.04.2021 - 28.02.2022 | 332/334 | ||
01.03.2022 - 31.03.2022 | 31/31 | ||
01.04.2022 - 30.06.2022 | 86/91 | ||
01.07.2022 - 30.09.2022 | 91/92 |
Percentiles were calculated based on the comparison of the TCDR against NRL TSI v2 composite as reference dataset for the variable Total Solar Irradiance (TSI). The ICDR daily means remain in general with in the 2.5 and 97.5 percentiles.
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