We recognise that remote sensing can be applied to a broad range of "environments" :

• Terrestrial: Abiotic and biotic features above the high-tide limit to its boundary layer with the atmosphere
• Marine: Abiotic and biotic features below the high-tide limit to the sea-floor
• Atmospheric: Region extending from terrestrial and marine boundary layer to the ionosphere

More information on these environments is provided in the figure above.