Hydrometeors

Types

Polarimetric variables/Altitude

ZH (dBZ)

ZDR (dB)

KDP (o km1)

RoHV

Temperature (˚C)

Drizzle

0 to 25

0 to1

0 to 0.1

0.99 to 1

0 to 45

Rain

24 to 56

0.3 to 5.6

0.3 to 6

0.95 to 0.98

0 to 45

Graupel LD

28 to 45

−0.9 to 1.6

0.3 to 6

0.89 to 0.98

−45 to −5

Graupel HD

35 to 52

−1 to 3.1

−1.8 to 4.8

0.90 to 0.98

−10 to 5

Wet snow

5 to 58

0.5 to 2.5

<−2 to 2

0.75 to 0.97

−0.2 to 0.2

Aggregates

2 to 30

0.3 to 1.3

−0.4 to 0.9

0.96 to 0.99

−45 to −5

Ice crystals

<0 to 18

0.8 to 5.8

0 to 0.3

0.96 to 0.98

<−48 to −5

Ice vertical

<0 to 22

−1.8 to −0.2

−2 to −0.5

0.95 to 0.98

<−48 to −5

Hail

50 to >65

−0.3 to 0.5

−0.4 to 1.8

0.76 to 1

−30 to 30

Big drops

48 to 68

2.8 to 6

0.2 to 6.5

0.95 to 0.98

0 to 48