A cool maritime air mass moves into the Pacific Northwest. This air mass has a t
ID: 803678 • Letter: A
Question
A cool maritime air mass moves into the Pacific Northwest. This air mass has a temperature of 55 degrees Fahrenheit and a relative humiditdy of 60%. As it moves over the mountains of the Northwestern States, this air mass loses 4.20 grams of water vapor per kilogram of air through condensation and precipitation. It also warms to 65 degrees Fahrenheit as it becomes modified by passing over the warmer land surface.
Using these facts, answer the following questions. Show all Calculations in a logical sequence in the space below.
A. What is the dew-point of the original maritime air mass?
B. What is the dewpoint temperature of the modified air mass?
C. What is the relative humidity of the modified air mass?
Explanation / Answer
A cool maritime air mass moves into the Pacific Northwest. This air mass has a temperature of 55 degrees Fahrenheit and a relative humiditdy of 60%. As it moves over the mountains of the Northwestern States, this air mass loses 4.20 grams of water vapor per kilogram of air through condensation and precipitation. It also warms to 65 degrees Fahrenheit as it becomes modified by passing over the warmer land surface.
Using these facts, answer the following questions. Show all Calculations in a logical sequence in the space below.
A. What is the dew-point of the original maritime air mass?
Dew point drops steadily due to continuous rise in pressure, drop in temperature, wind flows in west or northwesterly direction, decrease in cloud cover makes fair weather and precipitation stops at this location
B. What is the dew point temperature of the modified air mass?
The dew point temperature of modified air mass is relatively warm, leads to fall in pressure, loss in air mass and drop in humidity.
C. What is the relative humidity of the modified air mass?
The relative humidity drops at the modified air mass as the area is more warmer results in loss of air mass results generally the decrease in humidity.