Final answer:
The latitude of the Northern Hemisphere's dry belt during the vernal equinox is 30° N, which is a high-pressure zone characterized by dry conditions.
Step-by-step explanation:
The latitude of the Northern Hemisphere's dry belt during the vernal equinox is 30° N. This area is characterized by dry air masses and low precipitation, forming part of the Earth's subtropical high-pressure zones. The global pattern of precipitation is influenced by the movement of air masses, and these high-pressure zones are typically located at approximately 30° N and 30° S latitudes, where descending air from atmospheric circulation patterns leads to arid conditions.