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Description

The Harmonized Landsat Sentinel-2 (HLS) project provides consistent surface reflectance data from the Operational Land Imager (OLI) aboard the joint NASA/USGS Landsat 8 satellite and the Multi-Spectral Instrument (MSI) aboard Europe’s Copernicus Sentinel-2A, Sentinel-2B, and Sentinel-2C satellites. The combined measurement enables global observations of the land every 1.6 days at 30-meter (m) spatial resolution. The HLS project uses a set of algorithms to obtain seamless products from OLI and MSI that include atmospheric correction, cloud and cloud-shadow masking, spatial co-registration and common gridding, illumination and view angle normalization, and spectral bandpass adjustment.

The HLSS30 product provides 30-m Nadir Bidirectional Reflectance Distribution Function (BRDF)-Adjusted Reflectance (NBAR) and is derived from Sentinel-2A, Sentinel-2B, and Sentinel-2C MSI data products. The HLSS30 and HLSL30 products are gridded to the same resolution and Military Grid Reference System (MGRS) tiling system and thus are “stackable” for time series analysis.

The HLSS30 product is provided in Cloud Optimized GeoTIFF (COG) format, and each band is distributed as a separate COG. There are 13 bands included in the HLSS30 product along with four angle bands and a quality assessment (QA) band. See the User Guide for a more detailed description of the individual bands provided in the HLSS30 product.

The HLS project is funded by NASA’s Satellite Needs Working Group (SNWG) which provides data products developed to meet the needs of stakeholders from US government agencies.

For information on known issues see the anomalies link under the Documents and Resources tab.

Version Description

The following improvement was implemented for the HLS surface reflectance Version 2 data products: Aerosol QA bits from the USGS Land Surface Reflectance Code (LaSRC) model output have been added into the Function of Mask (Fmask) data layer. The two added bits indicate the aerosol levels: high, medium, low, and climatology aerosol.

Product Summary

Platforms
Sentinel-2A ,
Sentinel-2B ,
Sentinel-2C
Instruments
Sentinel-2 MSI
Spatial Extent

N: 90 S: -90 E: 180 W: -180

Spatial Resolution
30 Meters x 30 Meters
Spatial Reference System(s)
UTM
Location
GLOBAL LAND
Coordinate System
CARTESIAN
Granule Spatial Representation
GEODETIC
Temporal Extent
2015-11-28 to Present
Temporal Resolution
1 Day
Data Partner
Land Processes Distributed Active Archive Center (LP DAAC) ,
Interagency Implementation and Advanced Concepts Team, NASA (NASA/IMPACT)
Concept ID
C2021957295-LPCLOUD
Data State
ACTIVE
Number of Files/Granules
20574718
Processing Level
3
Published
Updated
Science Keywords
Reflectance

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

Neigh, C., Ju, J., Roger, J.-C., Skakun, S., Vermote, E., Claverie, M., Dungan, J., Yin, Z., Freitag, B., & Justice, C. (2021). HLS Sentinel-2 Multi-spectral Instrument Surface Reflectance Daily Global 30m v2.0 [Data set]. NASA Land Processes Distributed Active Archive Center. https://doi.org/10.5067/HLS/HLSS30.002 Date Accessed: 2026-04-20

File Naming Convention

HLS.S30.T17SLU.2020117T160901.v1.5.Fmask.tif

The file name begins with the Product Identifier (HLS.S30) followed by T plus the 5-character MGRS Tile Identifier (T17SLU), the Julian Date and Time of Production designated as YYYYDDDTHHMMSS (2020117T160901), the Version of the data collection (v1.5), the Variable/Band (Fmask), and the Data Format (tif).

Documents

True-color reflectance image of the island of Uvea (Wallis) of Wallis and Futuna captured on 13 July 2025 by the MSI instrument aboard the Sentinel-2B satellite

Uvea, Wallis and Futuna

Image captured on July 13, 2025, from the MSI instrument aboard ESA's Sentinel-2B satellite.
Worldview Image of the Week
July 18, 2025
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Publications Citing This Dataset

Filters
Title Year Author
Can we detect more ephemeral floods with higher density harmonized Landsat Sentinel 2 data compared to Landsat 8 alone? Tulbure, M. G.
Assessing within-field corn and soybean yield variability from worldview-3, planet, sentinel-2, and landsat 8 satellite imagery Skakun, S.
Augmenting Landsat time series with Harmonized Landsat Sentinel-2 data products—Assessment of spectral correspondence Wulder, M. A.
Reviewing the potential of sentinel-2 in assessing the drought Varghese, D.
Sharpening ECOSTRESS and VIIRS land surface temperature using harmonized Landsat-Sentinel surface reflectances Xue, J.
Crop yield estimation using multi-source satellite image series and deep learning Ghazaryan, G.
Analyzing daily estimation of forest gross primary production based on Harmonized Landsat-8 and Sentinel-2 product using SCOPE process-based model Raj, R.
SHOWING 7 OF 7

Variables

The table below lists the variables contained within a single granule for this dataset. Variables often contain observed or derived geophysical measurements collected from a variety of sources, including remote sensing instruments on satellite and airborne platforms, field campaigns, in situ measurements, and model outputs. The terms variable, parameter, scientific data set, layer, and band have been used across NASA’s Earth science disciplines; however, variable is the designated nomenclature in NASA’s Common Metadata Repository (CMR). Variable metadata attributes such as Name, Description, Units, Data Type, Fill Value, Valid Range, and Scale Factor allow users to efficiently process and analyze the data. The full range of attributes may not be applicable to all variables. Additional information on variable attributes is typically available in the data, user guide, and/or other product documentation.

For questions on a specific variable, please use the Earthdata Forum.

Name Description Units Data Type Fill Value Valid Range Scale Factor Offset
Band 1 Coastal Aerosol N/A int16 -9999 N/A 0.0001 N/A
Band 2 Blue N/A int16 -9999 N/A 0.0001 N/A
Band 3 Green N/A int16 -9999 N/A 0.0001 N/A
Band 4 Red N/A int16 -9999 N/A 0.0001 N/A
Band 5 Red Edge1 N/A int16 -9999 N/A 0.0001 N/A
Band 6 Red Edge2 N/A int16 -9999 N/A 0.0001 N/A
Band 7 Red Edge3 N/A int16 -9999 N/A 0.0001 N/A
Band 8 NIR Broad N/A int16 -9999 N/A 0.0001 N/A
Band 8A NIR Narrow N/A int16 -9999 N/A 0.0001 N/A
Band 9 Water Vapor N/A int16 -9999 N/A 0.0001 N/A
Band 10 Cirrus N/A int16 -9999 N/A 0.0001 N/A
Band 11 SWIR1 N/A int16 -9999 N/A 0.0001 N/A
Band 12 SWIR2 N/A int16 -9999 N/A 0.0001 N/A
Fmask Quality Bits Bit Field uint8 255 N/A N/A N/A
SAA Sun Azimuth Angle Degree uint16 40000 N/A 0.01 N/A
SZA Sun Zenith Angle Degree uint16 40000 N/A 0.01 N/A
VAA View Azimuth Angle Degree uint16 40000 N/A 0.01 N/A
VZA View Zenith Angle Degree uint16 40000 N/A 0.01 N/A
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