What type of air mass is characterized by dry and warm conditions?

The characteristic of dry and warm conditions is best associated with a Continental Tropical (cT) air mass. These air masses originate over land in tropical regions, where they gain heat and lose moisture, leading to the development of warm and dry conditions. They typically influence weather in summer, contributing to hot, dry weather in affected regions.

In contrast, Maritime Tropical (mT) air masses come from ocean areas and are generally warm and moist, not dry. Polar Maritime (mP) air masses originate from cold oceans and are damp and cool, lacking the warmth associated with cT. Continental Polar (cP) air masses, while dry, are cold rather than warm, making them unsuitable to fit the criteria of being characterized as warm and dry. Thus, only the Continental Tropical air mass is aptly suited for describing warm and dry atmospheric conditions.