Landsat TM and ETM+ Scenes of Brazilian Amazon Sites: 1985-2004

Fifteen zipped archives contain rectified Landsat 5 TM and Landsat 7 ETM+ satellite scenes from five study sites in the Brazilian Amazon. The images represent the most cloud-free retrievals available between 1985 and 2004, compiled by ORNL_CLOUD to support analysis of environmental impacts from colonization projects. The dataset is available across multiple platforms, indicating its established use in land change research.

Use Cases

• Evaluating deforestation and land use change over time by comparing multi-temporal Landsat scenes.
• Assessing the environmental impact of colonization projects near Altamira, Santarem, Ponta de Pedras, Bragantina, and Machadinho D'Oeste.
• Calibrating or validating land cover classification models using rectified .tif format imagery.
• Studying cloud-free optical remote sensing data for specific years between 1985 and 2004.

Strengths

• Contains 15 distinct, rectified satellite scenes, providing multiple data points for analysis.
• Images are selected for minimal cloud cover, enhancing usability for visual and algorithmic interpretation.
• Covers a multi-decade time range (1985-2004) across five specific study sites in Brazil.

Limitations

• The image dates are not continuous, limiting time-series analysis to specific years.
• Sources conflict on the last update date, with one listing 2004-12-31 and another 2026-03-13, creating uncertainty about metadata maintenance.
• Specific column names, row counts, and dataset size are not provided by any source.

Provenance

Source

ORNL_CLOUD

Collection Method

Archived cloud-free retrievals from Landsat 5 TM and Landsat 7 ETM+ satellites.

Time Range

1985-2004

Freshness

2026-03-13 01:15:14.348240

Geography

Study sites in the state of Para, Brazil (Altamira, Santarem, Ponta de Pedras, Bragantina) and Machadinho D'Oeste in Rondonia, Brazil.