Earth  ID: 12770

Harmonized Landsat-8 and Sentinel-2 Data

Landsat 8 and Sentinel-2 satellites have spectral and spatial similarities that make using their data together possible. When the data are used together observations can be more timely and accurate.

The HLS project is an effort to "harmonize" the data of the two satellite programs so that they can be more easily used in unison. The ultimate goal is to obtain seamless 2-3 day global surface reflectance coverage at 30 meters that removes residual differences between the sensors due to spectral bandpass and view geometry. Currently the v1.3 HLS data set encompasses 82 global test sites that cover about 7% of the global land area.

Using the processing power of the NASA Earth Exchange (NEX) computer cluster at NASA Ames, the HLS workflow atmospherically corrects data from the satellites, geographically tiles the Landsat data in a manor matching the Sentinel-2 tiling, and then corrects for different sensor view angles (Bidirectional Reflectance Distribution Function, or BRDF) and does a slight band pass adjustment for the Sentinel-2 data to create the harmonized 30-meter product.

The HLS team includes researchers from NASA Goddard Space Flight Center, the University of Maryland, and NASA Ames Research Center.

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Mike Taylor (Science Systems and Applications Inc. (SSAI)): Animator
Matthew R. Radcliff (USRA): Producer
Jeffrey Masek (NASA/GSFC): Scientist
Laura Rocchio (Science Systems and Applications Inc. (SSAI)): Writer
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NASA's Goddard Space Flight Center

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LDCM: Landsat Data Continuity Mission

This item is part of these series:

DLESE >> Agricultural science
SVS >> Landsat
SVS >> Seasons
GCMD >> Earth Science >> Agriculture
GCMD >> Earth Science >> Biosphere >> Vegetation
SVS >> Hyperwall
SVS >> Biosphere >> Agriculture
SVS >> Weather >> Seasons >> Vegetation Growth
NASA Science >> Earth

GCMD keywords can be found on the Internet with the following citation: Olsen, L.M., G. Major, K. Shein, J. Scialdone, S. Ritz, T. Stevens, M. Morahan, A. Aleman, R. Vogel, S. Leicester, H. Weir, M. Meaux, S. Grebas, C.Solomon, M. Holland, T. Northcutt, R. A. Restrepo, R. Bilodeau, 2013. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version