MuSLI: Multi-Source Land Surface Phenology for North America at 30m Resolution

A 30-meter resolution Land Surface Phenology product for North America derived from Harmonized Landsat Sentinel-2 data. The dataset provides dates of phenophase transitions, including greenup and senescence, and layers for percent greenness and Enhanced Vegetative Index metrics. It is produced by the National Aeronautics and Space Administration and was last updated in March 2026.

Use Cases

• Ecosystem and agro-ecosystem modeling based on phenophase transition dates.
• Monitoring terrestrial ecosystem response to climate variability based on greenness and EVI2 amplitude layers.
• Crop-type discrimination and land cover mapping based on seasonal vegetation patterns.
• Analyzing the impact of extreme events on vegetation cycles using the yearly phenological data.

Strengths

• Data gaps from cloud cover are filled with quality values from the preceding or following year.
• Provides up to two phenological cycles per year for each location.
• Includes specific quality assurance flags to mask poor quality pixels, particularly for known sparse data periods like 2016-2017.

Limitations

• Data are sparse and of poorer quality in 2016 and early 2017 due to satellite operational status.
• Disturbance events are not explicitly accounted for, which can lead to inaccurate detections of senescence.
• Pixels with more than two rapid growth cycles per year may not be accurately characterized.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Derived from Harmonized Landsat Sentinel-2 (HLS) data from Landsat 8 OLI and Sentinel-2A/2B MSI instruments.

Time Range

Yearly data, with known coverage issues in 2016-2017.

Freshness

Last updated 2026-03-13 00:04:12.915696

Geography

North America