- One type of measurement is based on the measurement of the solar irradiance on two wavelengths, one in a water absorption band, and the other not. The precipitable water column is determined using the irradiances in these bands and the Beer-Lambert law.
- Data can be viewed on a Lifted-K index. The numbers represent inches of water as mentioned above for a geographical location.
Comparison of precipitable water vapor observations by spaceborne radar interferometry and meteosat 6.7-micro-m radiometry
May 01, 2001; ABSTRACT Satellite radar interferometry (InSAR) can be applied to study vertically integrated atmospheric refractivity variations...