Desert Classification
>What is a polar desert:
>{perpetual snowline cover}
>{intense cold}
>{descending air}
>:[Greenland, Antarctica]:
A polar desert is a desert that experiences intense cold with little rainfall due to the descending air flow of the region, this gives it a predominant snowline. These can be seen in areas of Antarctica and Greenland.
>What is a subtropical desert?
>{largest dry expansions}
>{subsiding air from global air circulation}
>:[[T R A D E W I N D ]]:
>:[Sahara, Australia]:
A subtropical desert deserts are a result of subsiding air from global air circulations. The daily temperatures in these areas vary, all the while experiencing little to no precipitation. These are known as the largest dry expansions. Latitudes between 20˚ and 40˚ are most likely to experience these conditions, such as that of the Sahara and Australia. Also due to their location they are also known as Trade wind deserts.
>What is a Mid-Latitude Desert?
>{mountain genesis}
> {related to a global rain shadow effect}
> :{{Deep within continental interior, remote from the influence of an ocean}}:
>:[Gobi, Asian Deserts]:
A Mid-Latitude Desert is a desert that consists of semiarid grasslands that are a result of a global orographic effect in which the land is not impacted by ocean air influence and rests deep in the interior of a continent. Such deserts can be seen in Asia such as the Gobi desert.
>What is a Rain-Shadow Desert?
>inland desert
>relatively close to ocean
>result of rain shadow: when moist air deposits rain on the upward side of a mountain and dry air accumulates on the leeward side.
>:[ Great Basin Deserts, Mojave]:
A Rain-Shadow Desert is a desert that is a result of rain shadow where the moist water deposits rain on the upward side of a mountain and dry air accumulates on the leeward side. Such deserts can be found throughout the Great Basins and in the Mojave.
>What are coastal deserts?
>adjacent to cold eastern boundary currents
>affected by upwelling
> costal margins may experience wet fog
>inland air experiences intense evaporation
>:[Atacama,Chile}:
A Coastal Desert is a desert that exists near eastern boundary currents in which upwelling takes place. Although their coastal margins experience wet fogs, the more inland the air moves, the more evaporation the air experiences; this leaves behind extremely dry air, the driest of all the deserts. This is the case with Atacama, Chile.