Downslope Winds Identification

The question asks to identify the specific type of wind that flows downwards from higher elevations like mountains and plateaus towards valleys and plains. This movement is primarily driven by gravity acting on denser, cooler air.

Katabatic Winds Explained

Katabatic winds are precisely defined as downslope winds. They occur when cold, dense air accumulates over high ground (like a plateau or mountainside) and then flows down the slope due to gravity. This often happens during the night when the ground cools, making the air above it colder and denser than the surrounding air.

Comparing Wind Types

Let's look at the other options:

• Anabatic winds: These are upslope winds, moving from lower elevations towards higher elevations, typically caused by surface heating. They are the opposite of the winds described in the question.
• Samoon winds: This is a hot, dry, dust-laden wind found in desert regions like North Africa and the Middle East. It doesn't fit the description of a downslope gravitational wind.
• Shamal winds: This is a persistent northwesterly wind that affects Iraq and the surrounding areas, often carrying dust. It's not specifically defined by downslope movement from high elevations.

Therefore, the winds described in the question are correctly identified as Katabatic winds.