Using WSR-88D Polarimetric Data to Identify Bird-Contaminated Doppler Velocities

Table 1

Parameter values of the membership functions used by the simplified HCA for the three classes. Reflectivity-dependent parameters 𝑓₁ and 𝑓₂ are defined in (3) and (4), respectively.

	GC	BS	RA
	𝑃(𝑍) (dBZ)
𝑥1	5	5	5
𝑥2	20	10	10
𝑥3	70	20	65
𝑥4	80	30	75
	𝑃(𝑍DR) (dB)
𝑥1	−3	0	𝑓1−0.3
𝑥2	−2	2	𝑓1
𝑥3	1	10	𝑓2
𝑥4	2	12	𝑓2+0.3
	𝑃(𝜌hv)
𝑥1	0.5	0.3	0.85
𝑥2	0.8	0.5	0.97
𝑥3	0.9	0.8	1
𝑥4	0.95	1.01	1.05
	𝑃[SD(𝑍)] (dBZ)
𝑥1	2	1	0
𝑥2	4	2	0.5
𝑥3	10	4	3
𝑥4	15	7	6
	𝑃[SD(ΦDP)] (°)
𝑥1	30	8	0
𝑥2	40	10	1
𝑥3	50	40	15
𝑥4	60	60	30