9. Why are maritime polar air masses along the East Coast of the United States usually colder than those along the nation’s West Coast? Why are they also less prevalent? 10. The boundaries between...

9. Why are maritime polar air masses along the East Coast of the United States usually colder than those along the nation’s West Coast? Why are they also less prevalent?

10. The boundaries between neighbouring air masses tend to be more distinct during the winter than during the summer. Explain why.