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Polar Regions from the Sky

25.00

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Description

Remote sensing (RS) is a tool for data acquisition through two primary techniques-active and passive. Active RS is employed during consistent cloud cover and darkness, where the sensor in orbit (eg., LIDAR and RADAR) sends its own signal and records the backscatter signal. During cloud free conditions however, the passive RS measures the radiation reflected from the surface, eliminating the need to send its own signals. Researchers working on polar areas use this data to study temporal sea ice concentration (SIC) changes, estimate glacier surface velocity, map blue ice areas, detect crevices and surface melt on the ice sheet etc.

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