VNP22C2: Global Land Surface Phenology Metrics from VIIRS

19 Science Dataset layers provide yearly global land surface phenology metrics at a 0.05-degree spatial resolution. Derived from VIIRS NBAR reflectance data, the product includes six phenological transition dates, growing season length, greenness metrics, and confidence layers for up to two growing cycles per year. The dataset is part of the Suomi NPP mission and its Version 1 product was decommissioned on July 31, 2025.

Use Cases

• Tracking vegetation growing season length based on the provided phenological transition dates.
• Analyzing the rate of greenness increase and decrease for agricultural or ecological modeling.
• Assessing data confidence for phenology detection using the proportion of good quality (PGQ) layers.
• Comparing land surface dynamics with the MCD12C2 product using guidance from the User Guide.

Strengths

• Contains 19 distinct science data layers for detailed phenological analysis.
• Provides global coverage at a consistent 0.05-degree (~5,600 meter) spatial resolution.
• Derived from the operational VIIRS sensor on the Suomi NPP satellite, indicating a systematic data collection method.

Limitations

• The Version 1 product is decommissioned, directing users to a newer version.
• Specific column names and dataset size metrics are not provided in the available metadata.
• Update timestamps conflict between platforms (2026-04-09 and 2022-12 31).

Provenance

Source

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

Collection Method

Derived from time series of the two-band Enhanced Vegetation Index (EVI2) calculated from VIIRS Nadir BRDF-Adjusted Reflectance (NBAR).

Time Range

Yearly intervals.

Freshness

2026-04-09 20:58:34.450363

Geography

Global.