Skip to content. | Skip to navigation

Personal tools
You are here: GES DISC Home SORCE Data Holdings Level 3 Products SORCE Level 3 Total Solar Irradiance File Layout

SORCE Level 3 Total Solar Irradiance File Layout

The SORCE total solar irradiance (TSI) 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
Data Field Name Type Width
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
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
Document Actions
NASA Logo - nasa.gov
NASA Privacy Policy and Important Notices
Last updated: Apr 26, 2013 12:21 PM ET
Top