HLS SR - 30m - 3day¶
Description¶
The Harmonized Landsat and Sentinel-2 (HLS) project is a NASA initiative aiming to produce a seamless surface reflectance record from the Operational Land Imager (OLI) and Multi-Spectral Instrument (MSI) aboard Landsat-8/9 and Sentinel-2A/B remote sensing satellites, respectively. The HLS products are created from a set of algorithms: atmospheric correction, cloud and cloud-shadow masking, geographic co-registration and common gridding, bidirectional reflectance distribution function (BRDF) normalization, and bandpass adjustment.
Climate Engine details¶
- Dataset type
- Remote Sensing
- Climate Engine ID
- HLS_SR
- Documentation
- https://support.climateengine.org/article/200-hls
Dataset details¶
- Scale
- 30m
- Frequency
- 3 Day
- Coverage
- Global
- Start year
- 2013
- End year
- Present
Earth Engine collection details¶
- Earth Engine asset
- ['NASA/HLS/HLSL30/v002', 'NASA/HLS/HLSS30/v002']
- Earth Engine asset URL
- https://developers.google.com/earth-engine/datasets/catalog/NASA_HLS_HLSS30_v002
- Earth Engine source catalog
- Earth Engine Catalog
Variables¶
API variable docs: #harmonized-landsat-sentinel-2-surface-reflectance
| Name | Units |
|---|---|
| AVI | N/A |
| Blue | N/A |
| Blue/Nir ratio | N/A |
| Chlorophyll A calculated from Green and Blue bands | N/A |
| DVI | N/A |
| EVI | N/A |
| FCVI | N/A |
| False Color | N/A |
| Green | N/A |
| Green/Blue ratio | N/A |
| Green/Nir ratio | N/A |
| Green/Red ratio | N/A |
| MSAVI | N/A |
| NBR | N/A |
| NDSI | N/A |
| NDVI | N/A |
| NDWI (Green/SWIR2) | N/A |
| NDWI (Green/NIR) | N/A |
| NDWI (Green/SWIR1) | N/A |
| NDWI (NIR/SWIR1) | N/A |
| NDWI (SWIR1/Green) | N/A |
| NIR | N/A |
| Red | N/A |
| Red/Blue ratio | N/A |
| Red/Nir ratio | N/A |
| SAVI | N/A |
| SWIR1 (1.610??? um) | N/A |
| SWIR2 (2.190???? um) | N/A |
| True Color | N/A |
References¶
- Masek, J., Ju, J., Roger, J.-C., Skakun, S., Vermote, E., Claverie, M., Dungan, J., Yin, Z., Freitag, B., & Justice, C. (2021). HLS Operational Land Imager Surface Reflectance and TOA Brightness Daily Global 30m v2.0 [Data set]. NASA Land Processes Distributed Active Archive Center. https://doi.org/10.5067/HLS/HLSL30.002 Date Accessed: 2026-02-09
Website: https://www.earthdata.nasa.gov/data/projects/hls
Processing steps¶
- ClimateEngine applies the 'Fmask' quality assurance band to mask clouds, cloud shadows, and snow/ice. We also use the 'CLOUD_COVERAGE' property to filter images with greater than 70% cloud cover
Terms of use¶
NASA promotes the full and open sharing of all data with research and applications communities, private industry, academia, and the general public.