What does KDP stand for in radar meteorology?

The term KDP in radar meteorology stands for Specific Differential Phase. This parameter is crucial in the analysis of precipitation and is derived from the phase differences between horizontally and vertically polarized radar signals. Specifically, it represents the phase shift introduced by hydrometeors as they scatter and absorb the radar waves.

KDP is particularly useful in estimating rainfall rates and understanding the microphysical properties of precipitation. By measuring how much the phase delay differs between the two polarizations, meteorologists can gain insight into the size and concentration of raindrops, which directly contributes to more accurate weather forecasts and hydrological modeling.

Understanding KDP is essential for radar operators and meteorologists as it enhances their ability to interpret radar imagery in terms of precipitation intensity and structure, making it a fundamental concept in radar meteorology.