Release of Harmonized Landsat and Sentinel-2 (HLS) Version 2.0

Aug 24, 2021
By: LP DAAC

The LP DAAC is pleased to announce the availability of the Harmonized Landsat and Sentinel-2 (HLS) Version 2 products, which provide 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 the ESA (European Space Agency) 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.

Data are now available for this past month with historical and forward processing on-going. Once the historical processing has been completed the HLSL30 data will be available from April 2013 to present and the HLSS30 data will be available from December 2015 to present.

It should be noted that challenges in the acquisition of source input data for the HLSS30 data product have resulted in data gaps and increased latency in delivery of this data product. Work toward a solution is ongoing, but there is currently not a date for when this issue is expected to be resolved.

Improvements to the HLS v2 include:

  • Additional data layers consisting of solar and viewing azimuth and zenith angle bands.
  • Aerosol Quality Assurance bits from the USGS Land Surface Reflectance Code (LaSRC) model output added into the Fmask data layer.
  • LaSRC version 3.1.0 is used to atmospherically correct the input Sentinel data.

A citation containing the Digital Object Identifier (DOI) for each dataset is provided below.

HLS Operational Land Imager Surface Reflectance and TOA Brightness Daily Global 30m v2.0 – HLSL30.002
Masek, J., J. Ju, J. Roger, S. Skakun, E. Vermote, M. Claverie, J. Dungan, Z. Yin, B. Freitag, C. Justice. HLS Operational Land Imager Surface Reflectance and TOA Brightness Daily Global 30 m v2.0. 2021, distributed by NASA EOSDIS Land Processes DAAC, https://doi.org/10.5067/HLS/HLSL30.002. Accessed YYYY-MM-DD.

HLS Sentinel-2 Multi-spectral Instrument Surface Reflectance Daily Global 30 m v2.0 – HLSS30.002
Masek, J., J. Ju, J. Roger, S. Skakun, E. Vermote, M. Claverie, J. Dungan, Z. Yin, B. Freitag, C. Justice. HLS Sentinel-2 MSI Surface Reflectance Daily Global 30m v2.0. 2021, distributed by NASA EOSDIS Land Processes DAAC, https://doi.org/10.5067/HLS/HLSS30.002. Accessed YYYY-MM-DD.

The data are available for download through  NASA’s Earthdata Search.

LP DAAC Resources for HLS Data Products:
HLS Quick Guide
Getting Started with Cloud-Native HLS Data in Python
HLS Subsetting, Processing and Exporting Reformatted (HLS SuPER) data prep script

Please contact LP DAAC User Services with questions.