TIMED SEE: Solar X-Ray and UV Irradiance Measurements from Satellite

14-15 daily full-disk solar irradiance measurements per day, collected by the 12 X-Ray Photometers aboard the TIMED SEE satellite. The Level 2A data is provided by NASA, with measurements time-averaged, corrected to 1 Astronomical Unit, and with solar flares removed. The dataset was last updated on March 13, 2026.

Use Cases

• Modeling solar spectral irradiance based on XUV and Lyman-alpha measurements.
• Analyzing time-series trends in solar output from the 14-15 daily observations.
• Studying space weather precursors using flare-corrected, 1-AU normalized data.

Strengths

• Data is corrected to a standard 1 Astronomical Unit distance for consistency.
• Solar flares are removed from the time-averaged Level 2A data, reducing noise.
• Includes specific hydrogen Lyman-alpha measurement at 121.5 nm.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Measurements from 12 X-Ray Photometers aboard the TIMED SEE satellite.

Time Range

Measurements taken approximately every 97 minutes (per orbit).

Freshness

Last updated 2026-03-13 05:47:46.575697; freshness should be verified.

Geography

Solar observations (full-disk).