6. Which of the following air mass types is not found on Earth?
a. mT
b. cP
c. mA
d. cT
e. mP
answer: c
To determine which air mass type is not found on Earth, we need to understand what each air mass type represents and where it is typically found.
Air masses are large bodies of air that have relatively uniform temperature and humidity characteristics. They are classified based on their temperature and humidity characteristics, as well as their geographic origin. Here are the explanations for each air mass type mentioned in the question:
a. mT: This refers to a maritime tropical air mass. It is warm and humid and typically forms over tropical or subtropical oceans.
b. cP: This refers to a continental polar air mass. It is cold and dry and originates from polar regions over land.
c. mA: This air mass type is not commonly used in meteorology and is not typically found on Earth.
d. cT: This refers to a continental tropical air mass. It is hot and dry and typically forms over tropical or subtropical continental regions.
e. mP: This refers to a maritime polar air mass. It is cool and humid and typically forms over the polar regions or high-latitude oceans.
Therefore, the correct answer is c. mA, as it is not a commonly used or recognized air mass type on Earth.