Which of the following is not the feature of orographic rainfall?a)It ...
'Oru' means 'Mountain', so Orographic Rain means, clouds when they come in contact with Mountains, rise up condense, saturate and downpour rain. So as a result the slope which blocks clouds will get heavy rain (Windward side), the other slope of the mountain gets almost no rainfall so its called Rainshadow Area (or Leewards side). This type of rainfaal has nothing to do with type of clouds (Cirrus, Cumulus, Stratus etc) so Ans D.
Which of the following is not the feature of orographic rainfall?a)It ...
Explanation:
Introduction:
Orographic rainfall is a type of rainfall that occurs when moist air is forced to rise over a mountain barrier. As the air rises, it cools and condenses, forming clouds and precipitation. Orographic rainfall is a common phenomenon in mountainous regions and can have a significant impact on local climate and ecosystems.
Features of Orographic Rainfall:
1. Mountain Barrier: Orographic rainfall requires a mountain barrier across the wind direction. When moist air encounters a mountain range, it is forced to rise over the barrier, leading to the formation of clouds and precipitation.
2. Distribution of Rainfall: Areas near the mountain slope receive the maximum rainfall due to the orographic lifting of moist air. As the air rises and cools, it condenses into clouds and releases precipitation. The highest rainfall is typically observed on the windward slope of the mountain range.
3. Windward and Leeward Slopes: The windward slope of the mountain range is the side facing the oncoming wind. This slope receives the maximum rainfall as the moist air is forced to rise and cool. In contrast, the leeward slope is the side sheltered from the wind, and it receives less rainfall as the air descends and warms up.
4. Cloud Types: The windward slope is characterized by stratus clouds, which are low-level clouds that form in stable atmospheric conditions. These clouds are often associated with steady precipitation. On the other hand, the leeward slope is characterized by cumulus clouds, which are fluffy and puffy clouds that form in unstable atmospheric conditions. These clouds are more likely to produce showers and thunderstorms.
Explanation of the Correct Answer:
The correct answer is option 'D', which states that the windward slope is characterized by stratus clouds, whereas the leeward slope is characterized by cumulus clouds. This statement is not a feature of orographic rainfall. Cloud types can vary depending on various factors such as atmospheric instability, moisture content, and lifting mechanisms. While stratus clouds are often associated with stable atmospheric conditions, it is not a defining characteristic of orographic rainfall. Similarly, cumulus clouds can form in both stable and unstable atmospheric conditions.
In Conclusion:
Orographic rainfall is a type of rainfall that occurs when moist air is forced to rise over a mountain barrier. It requires a mountain barrier across the wind direction, and areas near the mountain slope receive the maximum rainfall. The windward slope receives more rainfall compared to the leeward slope. However, cloud types such as stratus and cumulus clouds are not exclusive to orographic rainfall and can vary depending on other atmospheric conditions.
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