Copernicus Open Access Hub

European Space Agency (ESA)

2014

Copernicus Open Access Hub provides free access to Sentinel satellite data for Earth observation, including imagery from Sentinel-1, Sentinel-2, Sentinel-3, and Sentinel-5P, supporting environmental and climate research. The dataset serves as an important platform for accessing Earth observation data from the Sentinel satellite constellation. This initiative is integral to the European Union's Copernicus Programme, designed to monitor and understand our planet's environment for the benefit of all citizens. The Hub provides unrestricted access to high-resolution satellite imagery and data, ensuring that users worldwide can utilize this information without licensing fees or usage restrictions. The temporal coverage varies by mission, starting in 2014. This provides a continuous record of Earth's environmental parameters over the past decade. In total, the dataset has a size of more than 45 TB and each sentinel captures thousands of scenes daily:​

• Sentinel-1: Acquires approximately 2,500 scenes per day.​
• Sentinel-2: Captures around 1,500 scenes daily.​
• Sentinel-3: Provides continuous data streams for various parameters.

The datasets is organized based on the specific Sentinel missions and their respective data products:​

• Sentinel-1 Products:

  • Level-1 GRD (Ground Range Detected): Focused on land and ocean monitoring, these products are radiometrically calibrated and geo-referenced.​
  • Level-1 SLC (Single Look Complex): Suitable for interferometric applications, preserving phase information.​

• Sentinel-2 Products:

  • Level-1C: Top-of-atmosphere reflectance data, ortho-rectified.​
  • Level-2A: Bottom-of-atmosphere reflectance data, corrected for atmospheric effects.​

• Sentinel-3 Products:

  • OLCI (Ocean and Land Colour Instrument): Provides data on ocean color and land surface reflectance.​
  • SLSTR (Sea and Land Surface Temperature Radiometer): Measures sea and land surface temperatures.​

• Sentinel-5P Products:

  • L2 Products: Includes data on atmospheric trace gases like nitrogen dioxide, ozone, and methane.