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Question:

How does data from Sentinel-2A’s MultiSpectral Instrument compare to Landsat data?

Answer:

The Sentinel-2A MultiSpectral Instrument (MSI) data has spectral bands very similar to Landsat 8 (excluding the thermal bands of Landsat 8’s Thermal Infrared Sensor - TIRS). Details about the comparisons can be found on the USGS EROS Sentinel-2 page.