ACRIM III: Daily Mean Total Solar Irradiance from Satellite

NASA's ACRIM III instrument on the ACRIMSAT satellite collected this Level 2 dataset of total solar irradiance. The data consists of daily mean values constructed from the instrument's shutter cycle results. The product version is V001 and was last updated in March 2026.

Use Cases

• Model long-term solar energy input to Earth's climate based on daily mean total solar irradiance.
• Analyze trends in solar activity using the constructed daily means from shutter cycles.
• Validate and calibrate other solar irradiance models with satellite-derived measurements.

Strengths

• Data originates from NASA's ACRIM III satellite instrument, an authoritative source for solar irradiance.
• Provides daily mean values, offering a consistent temporal aggregation for analysis.
• Product version V001 indicates a defined and potentially stable data processing pipeline.

Limitations

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

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Gathered by the ACRIM III instrument on the ACRIMSAT satellite, with daily means constructed from shutter cycle results.

Time Range

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Freshness

Last updated 2026-03-12 22:04:31.410780; freshness should be verified.

Geography

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