Climatic Classification – Koppen, Thornthwaite & Trewartha YouTube Lecture Handout

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Climatic Classification – Koppen, Thornthwaite & Trewartha YouTube Lecture Handout

Climatic Classification System

Dr. Manishika Jain explains the 3 climatic classification- Koppen, Thornthwaite and Trewartha summarized under empirical, genetic and applied classification.

Illustration: Climatic Classification System
Illustration: Climatic Classification System

Koppen Classification

Illustration: Koppen Classification
Illustration: Koppen Classification
Illustration: Koppen Classification
Illustration: Koppen Classification
Illustration: Koppen Classification
Illustration: Koppen Classification
Illustration: Koppen Classification
Illustration: Koppen Classification
Illustration: Koppen Classification
Illustration: Koppen Classification
Illustration: Koppen Classification

Thornthwaite՚s Classification - 1931

Precipitation Efficiency

Illustration: Thornthwaite՚s Classification - 1931
Illustration: Thornthwaite՚s Classification - 1931

Temperature Efficiency

Illustration: Temperature Efficiency
Illustration: Temperature Efficiency

Thornthwaite՚s Classification - 1948

  • where is sum of 12 months of , is complex function of , & is mean monthly temperature
  • where is deficit & is potential evapotranspiration
  • where & is surplus & is potential evapotranspiration
  • or
  • Simplified 1955 Formula
    Illustration: Thornthwaite՚s Classification - 1948
Illustration: Thornthwaite՚s Classification - 1948
Illustration: Thornthwaite՚s Classification - 1948

Trewartha՚s Classification

Illustration: Trewartha՚s Classification
Illustration: Trewartha՚s Classification

Manishika