Validity of the Landsat surface reflectance archive for aquatic science: Implications for cloud-based analysis
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Abstract
Originally developed for terrestrial science and applications, the US Geological Survey Landsat surface reflectance (SR) archive spanning ~ 40 yr of observations has been increasingly utilized in large-scale water-quality studies. These products, however, have not been rigorously validated using in situ measured reflectance. This letter quantifies and demonstrates the quality of the SR products by harnessing a sizeable global dataset (N = 1100). We found that the Landsat 8/9 SR in the green and red bands marginally meet the targeted accuracy requirements (30%), whereas the uncertainties in the blue and coastal-aerosol bands ranged from 48% to 110%. We further observed > +25% biases in the visible bands of Landsat 5/7 SR, which can introduce an apparent downward trend when applied in time-series analyses combined with Landsat 8/9. Users must exercise caution when using this archive for trend analyses, and progress in atmospheric correction is required to foster advanced applications of the Landsat archive for aquatic science.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Validity of the Landsat surface reflectance archive for aquatic science: Implications for cloud-based analysis |
| Series title | Limnology and Oceanography Letters |
| DOI | 10.1002/lol2.10344 |
| Volume | 8 |
| Issue | 6 |
| Year Published | 2023 |
| Language | English |
| Publisher | Association for the Sciences of Limnology and Oceanography |
| Contributing office(s) | Earth Resources Observation and Science (EROS) Center |
| Description | 9 p. |
| First page | 820 |
| Last page | 858 |
| Google Analytic Metrics | Metrics page |