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More details regarding these products are found below:

Aqua / AMSR-E Brightness Temperature

AMSR-E Brightness Temperature (89H GHz B Scan, Day), 2003-05-07

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The (AMSR-E) instrument on the NASA Earth Observing System (EOS) Aqua satellite provides global passive microwave measurements of terrestrial, oceanic, and atmospheric variables for the investigation of global water and energy cycles.  The AMSR-E Level-2A product (AE_L2A) contains horizontally and vertically polarized brightness temperature measurements at 6.9 GHz, 10.7 GHz, 18.7 GHz, 23.8 GHz, 36.5 GHz, and 89.0 GHz. The GIBS and AMSR-E team have selected the 89.0 GHz horizontal and vertical parameters for visualization.  These measurements provide the highest level of data resolution from the available scan channels.  More information can be found here.

MEaSUREs Freeze/Thaw

Key: Blue = Frozen. Red = Thawed, Olive = Transitional, Bright Green = Inverse Transitional

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