Geography • Physical GeographyEasy
How does the unique physiographic layout of the Western Ghats immediately adjacent to the narrow strip of Kerala influence the spatial distribution of rainfall during the Southwest Monsoon?
A. It causes uniform low-intensity drizzle across all elevations simultaneously.
B. It creates an extreme rain-shadow zone on its western slopes, keeping coastal areas dry.
C. It acts as a steep orographic barrier that forces moisture-laden air to rise rapidly, causing intense heavy rainfall along the windward western slopes and coastal plains.✓ Correct Answer
D. It completely deflects monsoon winds northward into the Konkan coast, bypassing Kerala entirely.
💡 Solution & Explanation
The Western Ghats act as a high orographic barrier across the path of the Southwest Monsoon winds blowing from the Arabian Sea, compelling the moist air to ascend rapidly over the narrow coastal strip of Kerala. This forced lifting results in adiabatic cooling and subsequent heavy orographic rainfall along the windward slopes and coastal plains. Other options suggesting uniform drizzle or rain-shadow conditions fail to reflect the actual precipitation dynamics driven by relief features. A related concept frequently tested in geography is the rain-shadow effect experienced on the leeward eastern slopes of the Western Ghats.
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