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The SORCE total solar irradiance data products are written in ASCII. The files contain a header description section using IDL style comment (first character is a semi-colon), which is followed by a table containg the data values arranged in 15 columns. The Fortan string format statement describes one row:
i8, 1x, i2, 1x, f14.6, 1x, i5, 2(1x, f10.4, 1x, f8.3, 1x, f6.3, 1x, f6.3, 1x, f6.3),2x,i1)
The TSI data files are commulative, meaning that they contain all the data for the mission and approximately each month a new file is delivered containing the most recent data. The table below describes each column in the ASCII data file.
Total Solar Irradiance
| Column Name |
Type |
Width |
| Instrument Precision in TSI at 1-AU (W/m^2, 1 sigma) |
Float |
6.3 |
| Solar Standard Deviation in 1-AU TSI (W/m^2, 1 sigma) |
Float |
6.3 |
| Total Uncertainty in TSI at 1-AU (W/m^2, 1 sigma) |
Float |
6.3 |
| Total Solar Irradiance (TSI) at Earth distance (W/m^2) |
Float |
10.4 |
| Instrument Accuracy at Earth distance (W/m^2, 1 sigma) |
Float |
8.3 |
| Instrument Precision in TSI at Earth distance (W/m^2, 1 sigma) |
Float |
6.3 |
| Solar Standard Deviation in TSI at Earth (W/m^2, 1 sigma) |
Float |
6.3 |
| Total Uncertainty in TSI at Earth distance (W/m^2, 1 sigma) |
Float |
6.3 |
| Provisional Flag (1=provisional data, 0=final data) |
Integer |
1 |
NOTE: columns are separated by space delimeters |
| Nominal Calendar Date (YYYYMMDD format) |
Integer |
8 |
| Nominal Measurement Time of UT Day (hours) |
Integer |
2 |
| Average Data Time (Julian Day) |
Float |
14.6 |
| Standard Deviation of Average Data Time (seconds, 1 sigma) |
Integer |
5 |
| Total Solar Irradiance (TSI) at 1 AU (W/m^2) |
Float |
10.4 |
| Instrument Accuracy at 1-AU TSI (W/m^2, 1 sigma) |
Float |
8.3 |
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Atmos Composition
