Q:

What is a convectional rainfall diagram?

A:

A convectional rainfall diagram gives a visual representation of the process through which atmosphere produces convectional rain. The diagram starts with warming land, which heats the air above it and causes the air to expand and rise. Clouds form and rain falls as the air condenses and cools.

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Full Answer

Convectional rain occurs most often in warm, sunny areas where the ground is exposed to a lot of direct sunlight. Generally, high land temperatures tend to lead to large amounts of convectional rain. This rule explains why hot places such as sub-Saharan Africa or the Indian subcontinent receive a high convectional rainfall each year.

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  • Q:

    What is convection rainfall?

    A:

    Convection rainfall is what happens when the sun heats a water source to the point that water turns into vapor and rises. By the time it reaches the condensation level, the vapor is usually cool enough to turn back into water and fall in the form of rain.

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  • Q:

    What is orographic rainfall?

    A:

    Orographic rainfall is rain that is produced from the lifting of moist air over a mountain. The moist air rises and cools, producing orographic clouds, which are the source of the rain. Most orographic rain falls upwind of the mountain range, with some also falling a short distance downwind. This process can produce any type of precipitation, including snow, sleet, hail or freezing drizzle.

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  • Q:

    What place on Earth receives the least rainfall?

    A:

    The driest location on Earth is the Atacama Desert in Chile. This area receives on average less than 0.004 inches of rainfall per year, as it sits in the rain shadow region west of the Andes. Within the Atacama Desert, the abandoned mining town of Yungay is driest.

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  • Q:

    What causes cyclonic rainfall?

    A:

    Cyclonic rainfall, also known as frontal rain, is caused when two air masses of different temperatures meet. Warm air and cool air don´t mix, as they have different densities. As the warm air rises over the heavier cool air, it cools and creates a front; clouds form and produce rain.

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