Question

1. in which direction will the low pressure system move over the next few days?

relative humidity chart

1. dry - bulb = - 4°c

difference = 2°c
rh=

1. air temp = 16°c

wet - bulb = 10°c
rh=

1. dry - bulb = 20°c

rh = 58%
dew point=

1. dry - bulb = 26°c

dew point = 6°c
rh=
whats the relationship?

1. use the graph to state the relationship between air temperature and relative humidity.

Explanation:

1. Dry - Bulb = - 4°C, Difference = 2°C

• Locate the row with Dry - Bulb temperature = - 4°C.
• Locate the column with the difference (between Wet - Bulb and Dry - Bulb) = 2°C.
• The intersection value is 77%.

2. Air Temp = 16°C (Dry - Bulb = 16°C), Wet - Bulb = 10°C

• Calculate the difference: \(16 - 10=6°C\).
• Locate the row with Dry - Bulb temperature = 16°C.
• Locate the column with difference = 6°C.
• The intersection value is 71%.

3. Dry - Bulb = 20°C, RH = 58%

• Locate the row with Dry - Bulb temperature = 20°C.
• Scan across the row to find the value 58%.
• Then, look at the top of the column. The difference value is 6°C.
• Calculate the Wet - Bulb temperature: \(20 - 6 = 14°C\).
• Use the Dew - Point chart (not shown here, but based on standard meteorological relationships, for Dry - Bulb = 20°C and Wet - Bulb = 14°C, the Dew - Point is 10°C).

4. Dry - Bulb = 26°C, Dew Point = 6°C

• Use the Dew - Point chart (not shown here, but based on standard meteorological relationships, for Dry - Bulb = 26°C and Dew - Point = 6°C, the difference between Dry - Bulb and Wet - Bulb is 12°C).
• Locate the row with Dry - Bulb temperature = 26°C.
• Locate the column with difference = 12°C.
• The intersection value is 28%.

Answer:

1. \(77\%\)
2. \(71\%\)
3. \(10^{\circ}C\)
4. \(28\%\)