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Q19 (IAS/1995) Geography › World Physical Geography › World climate classification Answer Verified

The graph given below shows the mean average monthly temperatures (in °C) and mean monthly rainfall (in cms) of a place : This graph is indicative of which one of the climatic zones of the world ?

Result
Your answer: —  ·  Correct: A
Explanation

The plotted climate—uniformly high mean monthly temperatures with a pronounced rainfall peak in a few months and a distinct dry winter—matches the Tropical wet-and-dry (savanna) or Aw climate. Aw is characterized by high year-round temperatures (coldest month >18°C) and rainfall concentrated in the southwest monsoon with dry winters [1]. Koppen-type listings explicitly separate Af (no dry season), Am (monsoon), and Aw (wet and dry/savanna) with Aw noted for distinct wet and dry seasons [2]. The graph’s clear seasonality in precipitation rules out Af (rainy tropical), which has significant rainfall every month, and also differs from semi-arid or temperate marine patterns, so option 1 is correct [3].

Sources

  1. [1] Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 4: Climate of India > Table 4.2 > p. 34
  2. [2] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 30: Climatic Regions > Köppen–Geiger Climate Classification > p. 422
  3. [3] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 30: Climatic Regions > 30.2. A – Tropical Humid Climates > p. 423
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