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GES Distributed Active Archive Center
DAAC Search and Order Help |
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GES Distributed Active Archive Center
DAAC Search and Order Help |
The raw telemetry (level 0) data are nominally downlinked twice a day from the spacecraft to ground stations at NASA's Wallops Flight Facility and a second in Santiago, Chile. The daily volume of data is roughly 120 Megabytes. SORCE data processing takes place at the LASP Science Operations Center where the higher level products are generated, usually within 24 hours of receiving the raw data.
Level 1A (time referenced instrument counts), level 1B (counts including calibration paramters and ephemeris data) and level 2 (irradiances at instrument resolution) data products are intended as internal products for use by the SORCE science team.
The standard data products which are available from the GES DAAC include four level 3 products, two contain solar spectral irradiance (SSI) data and the other two contain total solar irradiance (TSI) data. There are also two model level 4 data products that will be available in the future. All the standard data products are written using the new HDF5 file format. How to obtain the SORCE standard products is described in the data access section. The tables below summarize the standard data products:
| Name | Description | File Sizes |
|---|---|---|
| SOR3SSI6 SORCE Level 3 Solar Spectral Irradiance 6-Hour Average |
Contains the irradiance data generated by the SIM (300-2000 nm range at 1-34 nm intervals), SOLSTICE (115-300 nm range at 1 nm intervals), and XPS (1-34 nm at 5-10 nm intervals plus 121.6 nm at 1 nm interval) spectral instruments. These are averaged to provide 6-hourly values of the solar irradiance on a fixed wavelength scale, and normalized to one astronomical unit. | 0.75 MB (4x per day) |
| SOR3SSID SORCE Level 3 Solar Spectral Irradiance Daily Average |
Contains the irradiance data generated by the SIM (300-2000 nm range at 1-34 nm intervals), SOLSTICE (115-300 nm range at 1 nm intervals), and XPS (1-34 nm at 5-10 nm intervals plus 121.6 nm at 1 nm interval) spectral instruments. These are averaged to provide daily values of the solar irradiance on a fixed wavelength scale, and normalized to one astronomical unit. | 0.08 MB (once per day) |
| SOR3TSI6 SORCE Level 3 Total Solar Irradiance 6-Hour Average |
Contains the total solar irradiance (a.k.a solar constant) data collected by the TIM instrument covering the full wavelength spectrum averaged at 6-hourly intervals. The data are normalized to one astronomical unit. | 0.2 - 1.0 MB (cummulative file, delivered once a month) |
| SOR3TSID SORCE Level 3 Total Solar Irradiance Daily Average |
Contains the total solar irradiance (a.k.a solar constant) data collected by the TIM instrument covering the full wavelength spectrum averaged at daily intervals. The data are normalized to one astronomical unit. | 0.1 - 0.3 MB (cummulative file, delivered once a month) |
| Name | Description | File Sizes |
|---|---|---|
| SOR4NM16 SORCE Level 4 Modelled Solar Spectral Irradiance 6-Hour Average |
Contains modelled irradiance data from the SORCE spectral instruments (SIM, SOLSTICE and XPS). | TBD |
| SOR4NM1D SORCE Level 4 Modelled Solar Spectral Irradiance Daily Average |
Contains modelled irradiance data from the SORCE spectral instruments (SIM, SOLSTICE and XPS). | TBD |
More can be viewed about the SORCE data products on the SORCE Site
