Which feature can switched dual polarimetry radars measure?

Switched dual polarimetry radars possess the ability to measure specific characteristics of radar returns, particularly in how they interact with precipitation. In this context, one of the primary features that these radars can accurately quantify is the Linear Depolarization Ratio (LDR).

LDR is a parameter that is crucial for understanding the nature of precipitation particles. It indicates the degree to which the polarization of the radar signal is maintained or altered after it interacts with hydrometeors. High LDR values suggest less mixing of different hydrometeors, which can be reflective of pure precipitation forms, while lower values may indicate the presence of more complex particle mixtures or non-hydrometeor targets.

The ability to measure LDR allows meteorologists to differentiate between types of precipitation, assess the size and shape of particles, and infer storm characteristics, which plays a significant role in weather analysis and forecasting. Therefore, in the context of switched dual polarimetry radars, LDR stands out as a key measurement they are capable of accurate assessment.