Which of the following climatic types according to Köppen's scheme of classification corre… — State PSC Exam

Which of the following climatic types according to Köppen's scheme of classification correctly represents the Coromandel Coast of Tamil Nadu, which receives the major portion of its rainfall during the winter season from the retreating monsoon?

Monsoon with dry summer ( $As$ )Answer
B
Monsoon with short dry season ( $Amw$ )
C
Monsoon with dry winter ( $Cwg$ )
D
Tropical savanna climate ( $Aw$ )

Answer

Monsoon with dry summer (

As

)

Under Köppen's scheme, the symbol '

A

' represents tropical climate where the average temperature of the coolest month is

18^\circ\text{C}

or higher. The lowercase letter '

s

' denotes a dry summer season. The Coromandel Coast remains dry during the South-West summer monsoon because it lies parallel to the Bay of Bengal branch and in the rain-shadow area of the Western Ghats, but receives substantial winter rainfall from the North-East monsoon, making

As

the exact designation.

Step-by-Step Solution

Identify the geographical region and seasonal rainfall pattern specified in the question.

The region is the Coromandel Coast of Tamil Nadu, which experiences dry summers and receives most precipitation in winter from retreating monsoon winds.

Köppen's climate classification assigns letter symbols based on temperature and seasonal precipitation patterns.

Map the precipitation characteristics to Köppen's climatic letters.

The letter '

A

' denotes a tropical humid climate, and lowercase '

s

' indicates a dry summer season.

Combining '

A

' and '

s

' yields

As

, which defines the rainfall profile of coastal Tamil Nadu.

Key Concept

Köppen's Climate Classification of India

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