![NASA/HLS/HLSL30/v002](https://developers.google.com/earth-engine/datasets/images/NASA/NASA_HLS_HLSL30_v002_sample.png?authuser=6)
- Dataset Availability
- 2013-04-11T00:00:00Z–2024-08-14T23:21:35Z
- Dataset Provider
- NASA LP DAAC
- Earth Engine Snippet
-
ee.ImageCollection("NASA/HLS/HLSL30/v002")
- Tags
Description
The Harmonized Landsat Sentinel-2 (HLS) project provides consistent surface reflectance (SR) and top of atmosphere (TOA) brightness data from a virtual constellation of satellite sensors. The Operational Land Imager (OLI) is housed aboard the joint NASA/USGS Landsat 8 and Landsat 9 satellites, while the Multi-Spectral Instrument (MSI) is mounted aboard Europe's Copernicus Sentinel-2A and Sentinel-2B satellites. The combined measurement enables global observations of the land every 2 to 3 days at 30m 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 HLS project distributes data as two separate products: HLSL30 (Landsat 8/9) and HLSS30 (Sentinel-2 A/B). They both provide 30m Nadir Bidirectional Reflectance Distribution Function (BRDF), Adjusted Reflectance (NBAR). This is only the HLSL30 product (the Landsat component). Earth Engine does not currently offer the HLSS30 product (the Sentinel-2 component). Therefore, observation frequency of the HLS products offered by Earth Engine is determined solely by the Landsat 8 and 9 acquisition plan.
Documentation:
Bands
Resolution
30 meters
Bands
Name | Units | Description | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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B1 |
Coastal Aerosol |
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B2 |
Blue |
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B3 |
Green |
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B4 |
Red |
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B5 |
NIR |
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B6 |
SWIR1 |
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B7 |
SWIR2 |
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B9 |
Cirrus |
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Band10 |
TIRS1 |
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Band11 |
TIRS2 |
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Fmask |
Quality Bits |
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SZA |
deg | Sun Zenith Angle |
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SAA |
deg | Sun Azimuth Angle |
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VZA |
deg | View Zenith Angle |
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VAA |
deg | View Azimuth Angle |
Image Properties
Image Properties
Name | Type | Description |
---|---|---|
ACCODE | STRING | LaSRC version, e.g. LaSRCS2AV3.5.5 or LaSRCL8V3.5.5 |
CLOUD_COVERAGE | DOUBLE | The percentage of cloud and cloud shadow in observation based on Fmask. |
HLS_PROCESSING_TIME | STRING | HLS Processing date and time for HLS L30 |
LANDSAT_PRODUCT_ID | STRING | The Landsat-8 input L1 scene product ID for processing backtracing. |
MEAN_SUN_AZIMUTH_ANGLE | DOUBLE | Mean Sun Azimuth Angle in degree of the input data for HLS L30. |
MEAN_SUN_ZENITH_ANGLE | DOUBLE | Mean Sun Zenith Angle in degree of the input data for HLS L30 |
MEAN_VIEW_AZIMUTH_ANGLE | DOUBLE | Mean View Azimuth Angle in degree of the input data. |
MEAN_VIEW_ZENITH_ANGLE | DOUBLE | Mean View Zenith Angle in degree of the input data. |
NBAR_SOLAR_ZENITH | DOUBLE | Mean Sun Zenith Angle in degree of the HLS product after BRDFadjustment |
SPATIAL_COVERAGE | DOUBLE | The percentage of the tile with data |
TIRS_SSM_MODEL | STRING | TIRS SSM encoder position model (Preliminary, Final or Actual). |
TIRS_SSM_POSITION_STATUS | STRING | L30 |
USGS_SOFTWARE | STRING | LPGS_2.6.2 |
Terms of Use
Terms of Use
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Citations
Masek, J., Ju, J., Roger, J., 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 EOSDIS Land Processes Distributed Active Archive Center. Accessed 2023-09-12 from https://doi.org/10.5067/HLS/HLSL30.002
DOIs
Explore with Earth Engine
Code Editor (JavaScript)
var collection = ee.ImageCollection("NASA/HLS/HLSL30/v002") .filter(ee.Filter.date('2013-04-25', '2013-04-28')) .filter(ee.Filter.lt('CLOUD_COVERAGE', 30)); var visParams = { bands: ['B4', 'B3', 'B2'], min:0.01, max:0.18, }; var visualizeImage = function(image) { var imageRGB = image.visualize(visParams); return imageRGB; }; var rgbCollection = collection.map(visualizeImage); Map.setCenter(-60.1765, -22.5318, 11) Map.addLayer(rgbCollection, {}, 'HLS RGB bands');