HLS Landsat Surface Reflectance Daily Global 30m v1.5

HLSL30 V1.5 provides harmonized Nadir BRDF-Adjusted Reflectance (NBAR) data derived from Landsat 8 Operational Land Imager (OLI) sensors. The product offers 30-meter resolution global land observations with a revisit frequency of 1.6 to 3 days, processed through atmospheric correction, cloud masking, and spectral bandpass adjustment. This NASA-funded project was decommissioned in January 2022, with users directed to an improved V2 product.

Use Cases

• Time series analysis of land surface changes using stackable NBAR data gridded to the Military Grid Reference System (MGRS).
• Vegetation monitoring and land cover classification using the 10 spectral reflectance bands.
• Atmospheric and radiative transfer studies utilizing the top of atmosphere (TOA) brightness and surface reflectance (SR) data.
• Cloud and shadow masking for clear-sky composite generation using the quality assessment (QA) band.
• Analysis of view angle effects on reflectance using the four included angle bands.

Strengths

• Provides global land observations at a high temporal cadence, with sources citing revisit times of every 1.6 to 3 days.
• Data is processed through a detailed algorithm suite including atmospheric correction, cloud masking, and spectral bandpass adjustment for consistency.
• Products are formatted as Cloud Optimized GeoTIFFs (COG) and use a common MGRS tiling system, enabling efficient stacking and analysis.

Limitations

• The V1.5 product is explicitly decommissioned and provisional, not validated for science use, directing users to a newer version.
• Sources conflict on the exact temporal resolution, citing both 'every 1.6 days' and 'every 2–3 days'.
• Specific row counts, dataset size, and complete column/band lists are not provided in the available metadata.

Provenance

Source

NASA/USGS Landsat 8 satellite's Operational Land Imager (OLI).

Collection Method

Derived from Landsat 8 L1TP data products using HLS project algorithms for harmonization.

Freshness

Platform metadata indicates a last updated date of 2026-03-13, but the product itself was decommissioned on 2022-01-04.

Geography

Global land coverage.