The complete sentence is - "A mt air mass is likely to be wetter than a ct air mass because the mt air mass forms over the oceans."
A volume of air determined by its temperature and humidity is referred to as an air mass. Air masses encompass hundreds or thousands of square miles and adapt to the properties of the area underneath them. They are categorized based on latitude and whether they originate on land or in the sea.
Over warm tropical waterways, Maritime Tropical (mT) air masses form. They are warm, damp (high dew points), and unstable at the surface, making them excellent for cloud formation and precipitation. Whether it's continental arctic or marine tropical.
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