HLSL30 v015

HLS Landsat-8 OLI Surface Reflectance and TOA Brightness Daily Global 30 m


PI: Jeffrey G. Masek, Junchang Ju

Provisional HLS data have not been validated for their science quality and should not be used in science research or applications. If you are interested in exploring these provisional datasets please download the data from NASA's Earthdata Search. If you have any feedback or questions on the data please contact lpdaac@usgs.gov or join our HLS conversation on the Earthdata Forum.

Description

The Harmonized Landsat and Sentinel-2 (HLS) project provides consistent surface reflectance (SR) and top of atmosphere (TOA) brightness 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 and Sentinel-2B satellites. The combined measurement enables global observations of the land every 2–3 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 HLSL30 product provides 30-m Nadir Bidirectional Reflectance Distribution Function (BRDF)-Adjusted Reflectance (NBAR) and is derived from Landsat 8 OLI 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 HLSL30 product is provided in Cloud Optimized GeoTIFF (COG) format, and each band is distributed as a separate file. There are 10 bands included in the HLSL30 product along with one quality assessment (QA) band and four angle bands. For a more detailed description of the individual bands provided in the HLSL30 product, please see the User Guide.

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Characteristics

Product Maturity

Provisional HLS data have not been validated for their science quality and should not be used in science research or applications. If you are interested in exploring these provisional datasets please download the data from NASA's Earthdata Search. If you have any feedback or questions on the data please contact lpdaac@usgs.gov or join our HLS conversion on the Earthdata Forum.

Collection and Granule

Collection

Characteristic Description
CollectionHLS
DOI10.5067/HLS/HLSL30.015
File Size~20 MB
Temporal ResolutionDaily
Temporal Extent2013-04-11 to Present
Spatial ExtentGlobal (Non-Antarctic)
Coordinate SystemUniversal Transverse Mercator (UTM)
DatumWorld Geodetic System (WGS84)
File FormatGeoTIFF
Geographic Dimensions10980 km x 10980 km

Granule

Characteristic Description
Number of Science Dataset (SDS) Layers15
Columns/Rows3660 x 3660
Pixel Size30 m

Layers

SDS Name Description Units Data Type Fill Value No Data Value Valid Range Scale Factor
Band01 Nadir BRDF-normalized Reflectance Band 1 N/A 16-bit signed integer -9999 N/A N/A 0.0001
Band02 Nadir BRDF-normalized Reflectance Band 2 N/A 16-bit signed integer -9999 N/A N/A 0.0001
Band03 Nadir BRDF-normalized Reflectance Band 3 N/A 16-bit signed integer -9999 N/A N/A 0.0001
Band04 Nadir BRDF-normalized Reflectance Band 4 N/A 16-bit signed integer -9999 N/A N/A 0.0001
Band05 Nadir BRDF-normalized Reflectance Band 5 N/A 16-bit signed integer -9999 N/A N/A 0.0001
Band06 Nadir BRDF-normalized Reflectance Band 6 N/A 16-bit signed integer -9999 N/A N/A 0.0001
Band07 Nadir BRDF-normalized Reflectance Band 7 N/A 16-bit signed integer --9999 N/A N/A 0.0001
Band09 Top of Atmosphere Reflectance Band 9 N/A 16-bit signed integer -9999 N/A N/A 0.0001
Band10 Top of Atmosphere Brightness Temperature Band 10 Degree 16-bit signed integer -9999 N/A N/A 0.01
Band11 Top of Atmosphere Brightness Temperature Band 11 Degree 16-bit signed integer -9999 N/A N/A 0.01
FMASK Quality Bits Bit Field 8-bit unsigned integer 255 N/A N/A N/A
Sun zenith Sun zenith angle Band Degree 16-bit unsigned integer 40,000 N/A N/A 0.01
Sun azimuth Sun azimuth angle Band Degree 16-bit unsigned integer 40,000 N/A N/A 0.01
View zenith View zenith angle Band Degree 16-bit unsigned integer 40,000 N/A N/A 0.01
View azimuth View azimuth angle Band Degree 16-bit unsigned integer 40,000 N/A N/A 0.01

Product Quality

Additional information related to cloud and aerosol quality along with QA mappings are provided under section 6.5 of the User Guide.

Known Issues

HLSL30.015 products are based on input Landsat 8 L1TP (precision terrain corrected) products, which require identification of ground control targets for precision geometric correction. Images where ground control is not available (e.g., very cloudy images) cannot be processed to L1TP and are not included in the HLSL30 dataset.

Documentation

Using the Data

Access Data

Citation

DOI: 10.5067/HLS/HLSL30.015

About the Image

HLSL30.015 bands 4,3,2 display agricultural fields, desert landscapes, and the city of Phoenix, AZ from January 31, 2021.

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