Landsat 8 is the eighth satellite of the United States' Landsat program, successfully launched on February 11, 2013, at Vandenberg Air Force Base in California aboard an Atlas-V rocket. It was initially known as the "Landsat Data Continuity Mission" (LDCM). Landsat 8 carries the Operational Land Imager (OLI) and the Thermal Infrared Sensor (TIRS).
Landsat 9 is the ninth satellite of the United States' Landsat program. On September 27, 2021, Landsat 9 was successfully launched from Vandenberg Space Force Base in California. Landsat 9 will image the Earth every 16 days, with an 8-day offset from Landsat 8.
The OLI includes 9 bands with a spatial resolution of 30 meters, including a 15-meter panchromatic band, with an imaging swath of 185x185km. The TIRS includes 2 separate thermal infrared bands with a resolution of 100 meters. This dataset contains Level C2-L1 data products from the Landsat OLI in the Yellow River Basin, all sourced from the United States Geological Survey website.
The spatial resolution of this data product is 30 meters, and the cloud cover is less than 20%.
The data are all sourced from the United States Geological Survey website （ https://earthexplorer.usgs.gov/ ).
L1-level data products are simply data that have undergone geometric correction. Compared to Collection 1 Level 1 data, new Ground Control Points (GCPS) phase 2 have been adopted, which integrate control points from both Landsat 8 and Sentinel-2. Collection 2 Level 1 data have improved the accuracy of geometric correction and radiometric calibration, particularly with significant enhancements in geometric correction accuracy.
Cloud cover is less than 20%, indicating good data quality.
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CSTR:11738.11.ncdc.YRiver.db2197.2022
10.12072/ncdc.YRiver.db2197.2022