VNP21A1N: Nighttime Land Surface Temperature from VIIRS Satellite

VIIRS/NPP Land Surface Temperature/Emissivity Daily L3 Global 1km SIN Grid Night V001 was decommissioned on April 8th, 2025. This daily, global 1-kilometer resolution dataset provides nighttime land surface temperature estimates, derived from cloud-free observations with a minimum 15% coverage threshold. It was algorithmically aligned with MODIS products to ensure continuity within NASA's Earth Observation System.

Use Cases

• Monitoring urban heat island effects using nightly temperature averages.
• Analyzing drought conditions and soil moisture through surface thermal properties.
• Calibrating or validating climate models with spatially consistent global temperature data.
• Studying diurnal temperature cycles by comparing with daytime satellite products.

Strengths

• Provides global daily coverage at 1-kilometer spatial resolution.
• Algorithm is synergistically developed with MODIS LST&E products for continuity.
• Data is filtered for quality, using only cloud-free observations with good accuracy.

Limitations

• This Version 1 product is decommissioned; users are directed to Version 2.
• Specific column names and dataset size are not provided in the metadata.
• The last update date conflicts between sources (2024-05-01 and 2026-04-09).

Provenance

Source

NASA/NOAA Suomi NPP satellite, Visible Infrared Imaging Radiometer Suite (VIIRS) sensor.

Collection Method

Daily compilation from Level 2 Gridded (L2G) intermediate products, mapped to a sinusoidal MODIS grid and averaged.

Time Range

null

Freshness

2026-04-09 21:12:43.740184

Geography

Global coverage on a sinusoidal grid.