Cumulus Cloud Model - Rain Formation in Warm Clouds: General Systems Theory - page 43

Table 2.2 In-cloud vertical velocity and temperature lapse rates
Sl. No. Height above

cloud base R (m)

Scale ratio
z = R / r * , ( r * = 1 m)

f fz In-cloud vertical velocity

(ms −1 ) W = w * fz ms −1 ,
w * = .01 ms −1

In-cloud temperature
perturbation C θ = ( θ * fz ) C
θ * = 0.00309C

In-cloud lapse rate
Γ c C/km Γ c = Γ − θ
Γ = − 10 C/km

1 1000 1000 0.17426 174.26 1.74 0.538 − 9.46

2 2000 2000 0.13558 271.16 2.71 0.838 − 9.16

3 3000 3000 0.11661 349.82 3.50 1.081 − 8.92

4 4000 4000 0.10461 418.46 4.18 1.293 − 8.70

5 5000 5000 0.09609 480.43 4.80 1.484 − 8.52

6 6000 6000 0.08959 537.56 5.38 1.661 − 8.34

7 7000 7000 0.08442 590.91 5.91 1.826 − 8.17

8 8000 8000 0.08016 641.24 6.41 1.981 − 8.01

9 9000 9000 0.07656 689.05 6.89 2.129 − 7.87

10 10,000 10,000 0.07347 734.73 7.34 2.270 − 7.72