1. Water in the atmosphere
Lab1
Units
Water in the atmosphere
Rainfall Analysis
Due date : October 10,2006
# St George Street Or
Monday Lecture

2. Physical units and their conversions
Length: 1 m + 2 cm = ____ M
2) Speed: (100 km m)/(1 h + 30 minutes) = ____ km/h
3) Area: 1 km2 = ____ M2
4) Volume: 1 km3 = ____ M3
5) Density: 1 ton/m3= ____ g/cm3
6) Force: kg  9.8 m/s2 = ____ Newton
7) Force: g  80 cm/s2 = ____ Newton
8) Pressure: 1 kg  9.8 m/s2  2 m 2 = ___ Pascal = ____ Mb
9) Pressure: 1 ton  0.05 km/s2  5 m 2 = ___ Pascal = ____ Mb
10) Energy: 20 J  5 s = ____ Watts

3. Water vapor in the atmosphere
where es is the saturated water vapor pressure in mb, and T is the air temperature in C.
Calculate the es in mb and Pa, respectively, at T=0C and T=30C
Note 1mb=100Pascal

4. 3. According to the equation in question 2, the saturated water vapor pressure is mb at 0 C. Under the gravity of 9.8 m s-2, what is the total mass (kg) of water vapor that creates this pressure on an area of 1 m2?
Pressure = Force/Area
Force= Pressure x Area
Weight = Force = Mass x Acceleration
Mass = Force/ Acceleration

6. Rainfall Analysis
October 5
October 6
October 7

7. Hr 1
Hr 2
Hr 3

8. Hr 3 start
Hr 2 end
Hr 1 end
Hr 2 start

9. Maximum Amount of Rain (mm) Maximum Rainfall Intensity (mm/h)
Duration (min)
Maximum Amount of Rain (mm)
Maximum Rainfall Intensity (mm/h) 60
120
360
720
1440