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- Short wave or Mid-Infrared Imagery (IR2)
The mid-infrared channel is unique in that it portrays some emitted and some reflected energy.
- The image can be interpreted much like the thermal infrared image with colder cloud tops extending higher into the atmosphere.
- The physical characteristics of this particular energy wavelength make this image useful for identifying fog when coupled with IR4, spotting forest fires and distinguishing the difference between water and ice clouds.
- Split-Window Infrared Imagery (IR5/IR6) l
- The Split-Window Infrared (also called "Dirty" Infrared) channel portrays emitted energy from the surface of the Earth.
- This channel is a bit more sensitive to water vapor than the similar "Thermal" channel.
- This wavelength is often used for identification of low-level moisture, determination of sea surface temperature, and detection of airborne dust and volcanic ash.