HLSL30: HLS-2 Landsat Operational Land Imager Surface Reflectance and TOA Brightness Daily Global 30m

NASA/HLS/HLSL30/v002
Dataset Availability
2013-04-11T00:00:00Z–2024-04-12T20:02:56Z
Dataset Provider
Earth Engine Snippet
ee.ImageCollection("NASA/HLS/HLSL30/v002")
Tags
landsat nasa sentinel usgs

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
B1

Coastal Aerosol

B2

Blue

B3

Green

B4

Red

B5

NIR

B6

SWIR1

B7

SWIR2

B9

Cirrus

Band10

TIRS1

Band11

TIRS2

Fmask

Quality Bits

SZA deg

Sun Zenith Angle

SAA deg

Sun Azimuth Angle

VZA deg

View Zenith Angle

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

NASA promotes the full and open sharing of all data with research and applications communities, private industry, academia, and the general public.

Citations

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');
Open in Code Editor