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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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table2_1
table2_1
Table 2-1: Evaluation of the adjusted individual timeseries with respect to C3S daily TSI composite.

Instrument

Adjustment
factor

Number of daily values

Bias
(W/m²)

RMS
(W/m²)

bc-RMS
(W/m²)

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
(+drift correction [D6]

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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figure2_1
figure2_1

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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table2_2
table2_2
Table 2-2: Bias and RMS difference between the C3S and NRL v2 daily TSI composites.

CDR

Number of daily values

Bias
(W/m²)

RMS
(W/m²)

bc-RMS
(W/m²)

TCDR

14610

1.403

1.426

0.253

ICDR

639

1.411

1.412

0.061

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figure2_4
figure2_4

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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table2_3
table2_3
Table 2-3: Bias and RMS difference between the C3S and SATIRE-S composites.

CDR

Number of daily values

Bias
(W/m²)

RMS
(W/m²)

bc-RMS
(W/m²)

TCDR

14199

1.340

1.371

0.287

ICDR

502

1.546

1.547

0.052

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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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table3_1
table3_1
Table 3-1: Summary of KPI results with 2.5 and 97.5 percentiles and number of ICDR days within the range. Colors green or red mark the results of the binomial tests as good or bad, respectively.


Total Solar Irradiance v2Total Solar Irradiance v3
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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