Landsat 7 ETM+ Level-2
Coming later Landsat 7 carried the Enhanced Thematic Mapper Plus (ETM+). This collection is its Collection 2 Level-2 archive from USGS: surface reflectance from six bands and surface temperature from the thermal band. The scan line corrector failed on 31 May 2003, so later scenes have wedge-shaped strips of missing data.
Schema v1 defines this collection, but lean v1 does not serve it yet. Requests for it answer 404 unknown-collection. GET /v1/collections will list it once it is live.
Facts from schema v1
Section titled “Facts from schema v1”| Collection id | landsat-etm-l2 |
| Aliases | LETML2 (Sentinel Hub legacy id), landsat-c2-l2 (Earth Search v1 and Planetary Computer), landsat-c2l2-sr (USGS LandsatLook STAC), LANDSAT/LE07/C02/T1_L2 (Google Earth Engine) |
| Platforms | landsat-7 |
| Expected time span | 1999-05-28 to 2024-01-19 |
| Resolution | 30 m |
| Units | REFLECTANCE, DN, KELVIN, CELSIUS |
| Tile zoom | 7 to 14 |
| Planned source | landsat-c2-l2 in https://earth-search.aws.element84.com/v1 |
| Build plan | Phase P1 with a combined launch (variant C), P3 with a Sentinel-first launch (variant S) |
| Band | Common name | Centre (µm) | Resolution |
|---|---|---|---|
| SR_B1 | blue |
0.485 | 30 m |
| SR_B2 | green |
0.56 | 30 m |
| SR_B3 | red |
0.66 | 30 m |
| SR_B4 | nir08 |
0.835 | 30 m |
| SR_B5 | swir16 |
1.65 | 30 m |
| SR_B7 | swir22 |
2.22 | 30 m |
| ST_B6 | lwir |
11.45 | 30 m |
Other layers: QA_PIXEL, QA_RADSAT, SR_CLOUD_QA, SR_ATMOS_OPACITY, ST_QA, ST_EMIS, ST_ATRAN, ST_CDIST.
- Revisit 16 days, swath 185 km, WRS-2 path and row, as for Landsat 8 and 9.
- Same scale and offset as Landsat 8-9: reflectance = DN × 0.0000275 − 0.2; temperature in kelvin = DN × 0.00341802 + 149.0.
- ETM+ has no coastal and no cirrus band, and its near-infrared band SR_B4 is broader than OLI’s.
- Earth Search indexes Landsat 7 in the same
landsat-c2-l2collection as Landsat 8 and 9. That is why thelandsat-c2-l2alias means Landsat 8 and 9 only in lean v1. - The time span is what schema v1 expects. The live collection document will publish the extent measured from the index.
- Phases refer to the build plan; see the Data overview.
Reference: USGS Landsat 7.