| Term | Differential phase shift (ΦDP) |
|---|---|
| Definition | Differential Phase Shift (ΦDP or PHI) is a measure of the difference in 2-way attenuation for the horizontal and vertical pulses in a pulse volume. As vertical and horizontal radar pulses pass through a particular target, the two pulses attenuate, or slow down, causing each pulse's phase to change. ΦDP shows the difference in phase shift between the horizontal pulse and the vertical pulse. This provides information about the shape and concentration of radar targets. |
| Sampling medium | Air |
| Aggregation type | Categorical |
| Units | ° |
| Provenance | US National Weather Service |
| Provenance uri | https://www.weather.gov/jan/dualpolupgrade-products#kdp |
| Category | - |
| Note | unit is ° |
| Status | ACCEPTED i |