Because the air moving down the leeward slope is dry.
The leeward side of a mountain or anything else is warm and dry.
A leeward slope is on the opposite side of a mountain, opposite to where the wind is blowing. For example, wind is blowing from north to south to a mountain, and the south side of the mountain would be the leeward slope.
Tokyo is in leeward slope.
The difference is that windward gets more rain, is wetter, and is the side of the mountain that is closest to the ocean. On the other hand the leeward is the farthest from shore and is drier but still gets rain.
because the leeward side of a mountain doesn't get any rain like on the westward side, also air drops in horse latitudes, and when air drops it causes a dry climate
The leeward side of a mountain or anything else is warm and dry.
I assume you are referring to a rain shadow desert but your question makes little sense as written. A rain shadow desert forms when a mountain range blocks the flow of moisture from reaching the interior of a continent. It forces the ran to fall on the windward side of the mountains and little moisture is able to cross the mountains to the leeward side. See the diagram above.
The dry region on the leeward side of a mountain is called a rain shadow. As moist air is forced up and over the mountain, it cools and releases precipitation on the windward side, leaving the leeward side with significantly less moisture and resulting in a rain shadow effect.
rain shadow
A dry area on a mountain side. Rain shadow effect relates to leeward of mountain
Dry.
Dry.
A leeward slope is on the opposite side of a mountain, opposite to where the wind is blowing. For example, wind is blowing from north to south to a mountain, and the south side of the mountain would be the leeward slope.
The dry area on the side of a mountain is called the leeward side. This is normally the area where deserts and steppes begin to form.
The wet side of the mountain is called the windward side. The dry side of the mountain is called the leeward side.
Tokyo is in leeward slope.
The difference is that windward gets more rain, is wetter, and is the side of the mountain that is closest to the ocean. On the other hand the leeward is the farthest from shore and is drier but still gets rain.