# MERSI Airmass

This enhancement, which should not be confused with the *Airmass RGB* enhancement, is typical of the MERSI radiometer on FengYun-3 satellites.

It uses both shortwave IR, the 7.3 µm water vapor band and long wave IR to provide a good view of the atmospheric circulations.

### Appearance

Clouds appear red, progressively darker as they get higher.
Water vapor appears lime green
Sea appears brown
Land appears magenta

### Intended usage

Meteorology

### Limitations

Daytime only
