Final answer:
A high-pressure system controls the dry season in Brasília, Brazil, leading to descending air, clear skies, and limited rainfall, typical of such atmospheric conditions.
Step-by-step explanation:
The dry season in Brasília, Brazil, is controlled by a high-pressure system. This weather pattern is characterized by atmospheric conditions where the air is descending, leading to clearer skies and fewer clouds, thus resulting in dry conditions. Low-pressure systems, on the other hand, involve rising moist air and condensation, leading to cloud formation and potential precipitation, which is not conducive to a dry season.
Brasília's dry weather is influenced by the South Atlantic High, a high-pressure zone in the Southern Hemisphere, where the Coriolis force causes the wind to circulate in a clockwise direction around the high-pressure zone. This leads to the suppression of clouds and precipitation, ensuring that the region experiences a dry season. Deserts and dry areas are often located under such high-pressure zones.