SOR3SIMD: Daily Solar Spectral Irradiance from SORCE SIM

SORCE SIM Level 3 Solar Spectral Irradiance Daily Means V027 (SOR3SIMD) provides merged daily solar spectra from the SIM instrument. The dataset covers wavelengths from 240 to 2416 nm with a spectral resolution of 1 to 27 nm and reports irradiances at 1 AU with an absolute uncertainty of about 2%. Data is structured as a tabular ASCII text file with rows for each wavelength per day.

Use Cases

• Analyzing solar variability over time based on daily irradiance measurements.
• Modeling atmospheric and climate responses using spectral irradiance data across 240-2416 nm.
• Calibrating other solar instruments by comparing against the SIM's reported 2% uncertainty.
• Studying specific wavelength bands for solar activity using the per-wavelength row structure.

Strengths

• Version 027 is the final and authoritative version, superseding all previous releases.
• Provides a specific measurement uncertainty of about 2% for the SIM instrument.
• Offers detailed spectral coverage from 240 nm to 2416 nm with a resolution range of 1-27 nm.

Limitations

• Key metadata such as row count, file size, and precise temporal coverage are not provided.
• The dataset is stored in a single ASCII file, which may limit scalability for large-scale analyses.
• Platform metadata conflicts: 'License' is listed as 'other-license-specified' on some platforms but 'None' on others.

Provenance

Source

GES_DISC

Collection Method

Constructed from measurements by the SORCE SIM instruments.

Freshness

2026-04-09 21:59:32.314603