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(a)
Elevation (m)
0
400
800
1200
1600
2000
2400
2800
3200
4000
4800
5600
6400
Pressure (kPa)
100
98.5
97
95.5
94
92
90.5
89
87.5
83.5
80
77.5
75
Vapour pressure (kPa)
2.25
2.0
1.8
1.6
1.45
1.3
1.15
1.03
0.93
0.74
0.59
0.48
0.38
If 58% of the perceptible water is produced from the air up to an elevation of 6400 m to form rainfall at the ground level, what would be the depth of the rainfall?
(b)
After the passage of a cyclone over the Northern Queensland, the rainfall stations A, B and C within a reserve area in the form of a square recorded X mm, 1.5 X mm and 1.25 X mm respectively. Estimate the mean areal precipitation over the reserve first by the arithmetic mean method and then by Thiessen polygon method. (X=58)
Sequential Sampling Under this method, a number of sample lots are drawn one after another from a universe depending on the results of the earlier samples. Such sampling is gen
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