With reference to Air Masses consider the following statements 1 They are characterized by uniform t...........

Geography World climates

With reference to Air Masses, consider the following statements:

1. They are characterized by uniform temperature and moisture content in the horizontal direction.

2. After formation, they quickly diffuse into the surrounding air and planetary wind circulation.

3. Their properties are determined by the underlying region from where they originate.

Which of the statements given above is/are correct?

1 and 3 only

2 and 3 only

3 only

1,2 and 3

Air masses have fairly uniform temperature and moisture content in the horizontal direction. They are characterized by their temperature and humidity properties. Hence statement 1 is correct.
The properties of air masses are determined by the underlying surface from where they originate. Hence statement 3 is correct.
Once, formed, air masses migrate within the general circulation. They do not diffuse into the surrounding air. Hence statement 2 is not correct. Upon movement, airmasses displace residual air over locations thus changing temperature and humidity characteristics.