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

SORCE Level 3 Solar Spectral Irradiance File Layout

The SORCE solar spectral irradiance (SSI) 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 columns. The SSI data files are commulative, meaning that they contain all the data for the mission.  The tables below describe the columns for the different product ASCII data files.

 

SIM and SOLSTICE Solar Spectral Irradiance Files
Data Field Name Type Format
Nominal Date Calendar Format (YYYYMMDD) Real*8 f10.1
Nominal Date Julian Day Number Real*8 f10.1
Minimum Wavelength (nm) Real*8 f6.1
Maximum Wavelength (nm) Real*8 f6.1
Instrument Mode ID Integer*2 i3
Data Version Integer*2 i3
Irradiance (W/m^2) Real*4 e11.4
Irradiance Uncertainty (W/m^2) Real*4 e11.4
Quality (average number of days between nominal date and measurement times) Real*4 f8.4

 

XPS Solar Spectral Irradiance Files

Data Field Name Type Format
Nominal Date Calendar Format (YYYYMMDD) Real*8 f12.3
Nominal Date Julian Day Number Real*8 f12.3
Average Measurement Date Julian Day Number Real*8 f15.6
Standard Deviation Measurement Date (Days) Real*4 f7.4
Diode Number Integer*2 i3
Minimum Wavelength (nm) Real*8 f6.1
Maximum Wavelength (nm) Real*8 f6.1
Median Irradiance (W/m^2) Real*8 e11.4
Mean Irradiance (W/m^2) Real*8 e11.4
Absolute Uncertainty (W/m^2, 1 sigma) Real*4 e10.3
Measurement Precision (W/m^2, 1 sigma) Real*4 e10.3
Calculation Precision (W/m^2, 1 sigma) Real*4 e10.3
Degradation Model Integer*2 i3
Degradation Version Integer*2 i3
Number of Points Integer*2 i5
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Last updated: Apr 26, 2013 12:11 PM ET
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