VIIRS/NPP Downward Shortwave Radiation: Daily Global Land Surface Solar Energy

Global daily estimates of incident solar radiation over land surfaces, produced at a 0.05-degree pixel resolution from NASA/NOAA Suomi NPP satellite data. The VNP18C1 Version 2 product is generated by the LPCLOUD organization using a look-up table algorithm that accounts for aerosols, clouds, and viewing geometry. It includes 3-hourly and daily mean Downward Shortwave Radiation (DSR) variables for use in land surface and solar energy models.

Use Cases

• Modeling land surface energy budgets based on daily mean solar radiation data.
• Assessing solar energy potential for site selection based on incident shortwave radiation.
• Analyzing the impact of aerosols and clouds on surface radiation based on the algorithm's look-up table approach.
• Incorporating satellite-derived radiation estimates into climate modeling grids.

Strengths

• Data is produced at a consistent 0.05-degree pixel resolution globally.
• Algorithm accounts for multiple atmospheric conditions including aerosols and clouds.
• Provides both 3-hourly and daily aggregated data products.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and total dataset size are unknown, which may limit suitability assessment.
• The Algorithm Theoretical Basis Document (ATBD) is noted as forthcoming, indicating incomplete methodological documentation.

Provenance

Source

NASA/NOAA Suomi National Polar-Orbiting Partnership (Suomi NPP) Visible Infrared Imaging Radiometer Suite (VIIRS).

Collection Method

Satellite remote sensing data processed using a narrowband look-up table (LUT) algorithm adapted for Downward Shortwave Radiation estimation.

Time Range

Daily intervals.

Freshness

Update frequency or recency is unknown; freshness unverified.

Geography

Global.