and deserts result from the global wind patterns that create dry high pressure air masses around 30 degrees north and 30 degrees south and at the poles

Sahara and the great sandy.

Explanation:

The result of the global circulation of the winds on the earth that create dry and high-pressure areas to the 30 degrees of both north and the south part of the country. A result of the flow of the westerlies and these are mod latitudes the interaction of the Hadley cells that usually form the ITCZ zone and is produced thermodynamically.

Humid continental climate is found in the interior of continents between the 30 and 60 degrees latitude, but usually above the 40 degree line.   40 degrees north of the equator means less direct sunlight and therefore less warmth.   this climate is mainly found in the northern hemisphere since there are no major landmasses in the southern hemisphere.  if you live in northern indiana, you know all about humid continental because that is the climate type you have!