There will be no foehn effect in mountainous areas. What are the conditions of foehn effect?
When the airflow is perpendicular to the hillside or the included angle is large, the wet airflow will pass through the hillside, which will have different effects on the temperature and precipitation of windward slope and leeward slope.
For example, if there is an airflow going through a mountain with a height of 4000m, suppose the temperature at the foot of the windward slope is 15℃ and the condensation height is 1000m. Since the temperature drops 1℃ every time the air rises 1000 m below the condensation height, it is at the height of1000 m. Above the condensation height, if the temperature rises by 100 m and drops by 0 or 6℃, it will drop to-13℃. If the condensed water vapor completely falls to the front of the mountain, the air will become a dry air mass after crossing the mountains and mountains. Without the influence of water vapor, every time the temperature drops by 100 m, the air flow will increase by 1℃. When the airflow reaches the foot of the mountain, it will become a dry and hot wind at 27℃.