An air mass forms over the water of the Gulf of Mexico and moves from the equator up toward us. What is it called?

An air mass forms over the water of the Gulf of Mexico and moves from the equator up toward us. What is it called?

The word that describes humidity (maritime or continental) is paired with the word that describes temperature (equatorial, tropical, polar or arctic). For example, if an air mass forms over a tropical ocean, it is called maritime tropical. If an air mass forms over land in the far north it is called continental polar.