According to the Köppen climatic classification, the letter code Cfa d

According to the Köppen climatic classification, the letter code Cfa denotes

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Tropical wet climate.

Humid subtropical climate.

Tundra climate.

Tropical wet and dry climate.

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UPSC NDA-2 – 2019

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The Köppen climate classification uses letters to denote climate types. The first letter indicates the main climate group: C denotes Temperate climates, characterized by average temperature of the coldest month between 0°C (or -3°C in some variations) and 18°C. The second letter indicates precipitation patterns: f denotes fully humid, meaning significant precipitation throughout the year. The third letter indicates the temperature of the summer: a denotes a hot summer, where the average temperature of the warmest month is over 22°C. Combining C, f, and a defines a Humid Subtropical climate, typically found on the eastern sides of continents between 25° and 40° latitude, characterized by hot, humid summers and mild winters.

– C: Temperate climate.
– f: Fully humid (precipitation in all seasons).
– a: Hot summer (warmest month > 22°C).
– Cfa classification corresponds to Humid Subtropical climate.

Other Köppen codes for the given options: Tropical wet climate is Af. Tundra climate is ET. Tropical wet and dry climate is Aw or As. Understanding the meaning of the letter codes is key to applying the Köppen classification system.

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