Calculates the complex dielectric constant of water for a given frequency and temperature using the model derived by Thomas Meissner and Frank Wentz in "The Complex Dielectric Constant of Pure and Sea Water from Microwave Satellite Observations". Their paper can be found here

For pure water the model is valid for frequencies up to 500 GHz from a temperature of -20 °C (note that this is super cooled water NOT ice) to +40 °C.

Note that neither Thomas Meissner or Frank Wentz are in any way related to, or affiliated with, this site.