Preprints
https://doi.org/10.5194/essd-2024-178
https://doi.org/10.5194/essd-2024-178
17 Jun 2024
 | 17 Jun 2024
Status: this preprint is currently under review for the journal ESSD.

Global 30-m seamless data cube (2000–2022) of land surface reflectance generated from Landsat-5,7,8,9 and MODIS Terra constellations

Shuang Chen, Jie Wang, Qiang Liu, Xiangan Liang, Rui Liu, Peng Qin, Jincheng Yuan, Junbo Wei, Shuai Yuan, Huabing Huang, and Peng Gong

Abstract. The Landsat series constitutes an unparalleled repository of multi-decadal Earth observations, serving as a cornerstone in global environmental monitoring. However, the inconsistent coverage of Landsat data due to its long revisit intervals and frequent cloud cover poses significant challenges to land monitoring over large geographical extents. In this study, we developed a full-chain processing framework for the multi-sensor data fusion of Landsat-5, 7, 8, 9 and MODIS Terra surface reflectance products. Based on this framework, a global, 30-m resolution, and daily Seamless Data Cube (SDC) of land surface reflectance was generated, spanning from 2000 to 2022. A thorough evaluation of the SDC was undertaken using a leave-one-out approach and a cross-comparison with NASA’s Harmonized Landsat and Sentinel-2 (HLS) products. The leave-one-out validation at 425 global test sites assessed the agreement between the SDC with actual Landsat surface reflectance values (not used as input), revealing an overall Mean Absolute Error (MAE) of 0.014 (the valid range of surface reflectance values is 0–1). The cross-comparison with the HLS products at 22 Military Grid Reference System (MGRS) tiles revealed an overall Mean Absolute Deviation (MAD) of 0.017 with L30 (Landsat-8-based 30-m HLS product) and a MAD of 0.021 with S30 (Sentinel-2-based 30-m HLS product). Moreover, experimental results underscore the advantages of employing the SDC for global land cover classification, achieving a sizable improvement in overall accuracy (2.4 %~11.3 %) over that obtained using Landsat composite and interpolated datasets. A web-based interface has been developed for researchers to freely access the SDC dataset, which is available at https://doi.org/10.12436/SDC30.26.20240506 (Chen et al., 2024).

Publisher's note: Copernicus Publications remains neutral with regard to jurisdictional claims made in the text, published maps, institutional affiliations, or any other geographical representation in this preprint. The responsibility to include appropriate place names lies with the authors.
Shuang Chen, Jie Wang, Qiang Liu, Xiangan Liang, Rui Liu, Peng Qin, Jincheng Yuan, Junbo Wei, Shuai Yuan, Huabing Huang, and Peng Gong

Status: open (until 02 Aug 2024)

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  • CC1: 'Comment on essd-2024-178', Diana Jones, 29 Jun 2024 reply
    • CC2: 'Reply on CC1', Jie Wang, 30 Jun 2024 reply
      • CC3: 'Reply on CC2', Diana Jones, 02 Jul 2024 reply
        • AC1: 'Reply on CC3', Shuang Chen, 02 Jul 2024 reply
          • CC4: 'Reply on AC1', Diana Jones, 03 Jul 2024 reply
            • AC2: 'Reply on CC4', Shuang Chen, 04 Jul 2024 reply
              • CC5: 'Reply on AC2', Delmar Wilson, 05 Jul 2024 reply
                • AC3: 'Reply on CC5', Shuang Chen, 09 Jul 2024 reply
  • CC6: 'Comment on essd-2024-178', Diana Jones, 10 Jul 2024 reply
    • CC7: 'Reply on CC6', Yamal Vivian, 11 Jul 2024 reply
      • CC12: 'Reply on CC7', Diana Jones, 14 Jul 2024 reply
    • CC8: 'Reply on CC6', Ethan Carter, 11 Jul 2024 reply
    • CC9: 'Reply on CC6', Congcong Li, 12 Jul 2024 reply
      • CC11: 'Reply on CC9', Diana Jones, 14 Jul 2024 reply
  • RC1: 'Comment on essd-2024-178', X. Zhu, 12 Jul 2024 reply
  • CC10: 'Comment on essd-2024-178', James Anderson, 12 Jul 2024 reply