How do Landsat Collection 2 Level-2 products compare with products from Collection 1?
Landsat Collection 2 Level-2 Surface Reflectance and Surface Temperature products are scene-based, are produced within the standard processing system, and are made available to download directly from EarthExplorer (earthexplorer.usgs.gov). In comparison, Landsat Collection 1 Level-2 products are only available via on-demand processing (Surface Reflectance, scene-based), or within Landsat Collection 1 U.S. Analysis Ready Data (ARD) (Surface Temperature, tile-based). The table below provides a brief overview of the differences between Collection 1 and Collection 2 Level-2 products.
NOTE: Landsat Collection 2 Level-2 products can only be produced for Landsat 4-5 TM, Landsat 7 ETM+, and Landsat 8 OLI/TIRS scenes. Landsat MSS 1-5 data cannot be processed into Level-2 products at this time.
| Surface Reflectance | Surface Temperature | |||
|---|---|---|---|---|
| Data Being Processed to Level-2 Products | Landsat 4-8 | Landsat 4-8, Landsat 9 (when available) | Landsat 4-8 | Landsat 4-8, Landsat 9 (when available) |
| Delivery/Download | Scene-based: ESPA On-Demand Interface
Tile-based: EarthExplorer, within U. S. Analysis Ready Data (ARD) |
Scene-based: EarthExplorer | Tile-based: EarthExplorer, within U.S. Analysis Ready Data (ARD) | Scene-based: EarthExplorer |
| Algorithm Version(s) | LEDAPS: v3.4.0 LaSRC: v1.4.1 |
v1.3.0 | ||
| Fill Value | -9999 | 0 | -9999 | 0 |
| Scaling Factor | 0.0001 | 0.0000275 + -0.2 | 0.1 | 0.00341802 + 149.0 |
| Data Type | Signed 16-bit integer | Unsigned 16-bit integer | Signed 16-bit integer | Unsigned 16-bit integer |
| Valid Range | 1-10000 | 1-65455 | 1500-3730 | 1-65535 |
| Quality Band | Level-2 PIXELQA Level-2 RADSATQA Level-2 SRAEROSOLQA |
L1 QA_Pixel L1 QA_RADSAT L2 SR_QA_AEROSOL |
Level-2 PIXELQA Level-2 RADSATQA Level-2 SRAEROSOLQA | L1 QA_Pixel L1 QA_RADSAT L2 SR_QA_AEROSOL |
| Atmospheric Reanalysis Source | n/a | n/a | NARR | GEOS-5 FP-IT (2000-pres.) MERRA-2 (1982-1999) |
Landsat Collection 2 Level-2 products require Landsat Collection 2 Level-1 scenes that have been processed to Tier 1 or Tier 2, as well as additional auxiliary data. For Landsat 7, the timeframe from acquisition (Real-Time -RT) to Tier 1 or Tier 2 takes approximately 25-27 days. For Landsat 8 scenes, the timeframe from acquisition (RT) to Tier 1 or Tier 2 takes approximately 15-17 days.
Learn more:
- Landsat 4-7 Collection 2 Level 2 Science Product Guide
- Landsat 8 Collection 2 Level 2 Science Product Guide
- Graphical view of the Landsat Collection 2 Product Generation Timeline
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How long does it take to create Landsat Collection 2 Level-2 products after a Landsat scene is acquired?
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How do I search and download Landsat Collection 2 data products?
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