This topic contains a solution. Click here to go to the answer

Author Question: Define relative humidity and dew point, and then explain why the latter is a better indicator of ... (Read 50 times)

DyllonKazuo

  • Hero Member
  • *****
  • Posts: 565
Define relative humidity and dew point, and then explain why the latter is a better indicator of water vapor content.
 
  What will be an ideal response?

Question 2

What is specific humidity and why is it such a useful measure of water vapor content?
 
  What will be an ideal response?



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

elizabethrperez

  • Sr. Member
  • ****
  • Posts: 344
Answer to Question 1

Answer: Relative humidity: relates the amount of water vapor in the air to the maximum possible at the current temperature. The World Meteorological Organization defines the relative humidity as
RH = (mixing ratio/saturation mixing ratio) x 100. Because of its dependence on temperature, the relative humidity will change throughout the course of the day even if the amount of moisture in the air is unchanged. Dew point: the temperature at which saturation occurs. It is a simple index to use and easy to interpret. And it is dependent almost exclusively on the amount of water vapor present.

Answer to Question 2

Answer: Specific humidity expresses the mass of water vapor existing in a given mass of air. Specific humidity has the advantage of not changing as air expands or contracts. When a kilogram of air expands, its mass is unchanged (it is still 1 kg), and the proportion that is water vapor is unchanged. As a result, the specific humidity is unaffected. Likewise, specific humidity is not temperature dependent. If a kilogram of air contains 1 g of water vapor, it still contains 1 g after heating. For this reason, specific humidity is a good indicator for comparing water vapor in the air at different locations whose air temperatures might be different from each other.




DyllonKazuo

  • Member
  • Posts: 565
Reply 2 on: Jul 14, 2018
Excellent


ktidd

  • Member
  • Posts: 319
Reply 3 on: Yesterday
Wow, this really help

 

Did you know?

The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.

Did you know?

Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.

Did you know?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

Did you know?

The tallest man ever known was Robert Wadlow, an American, who reached the height of 8 feet 11 inches. He died at age 26 years from an infection caused by the immense weight of his body (491 pounds) and the stress on his leg bones and muscles.

Did you know?

Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

For a complete list of videos, visit our video library