Mention the schemes of classification of climates as suggested by V. Koeppen with their features: 

Groups	Type	Letter Code	Characteristics
	Tropical Wet	Af	No dry season
A–Tropical Humid Climates	Tropical monsoon	Am	Monsoonal, short dry season
	Tropical wet and	Aw	Winter dry season
	dry
B–Dry Climates	Sub-tropical	BSh	Low-latitude semi arid or dry
	steppe
	Subtropical desert	BWh	Low latitude arid or dry
	Mid-latitude	BSk	Mid-latitude semi or dry
	steppe
	Mid-latitude	BWk	Mid-latitude arid or dry
	desert
C–Warm temperate	Humid	Cfa	No dry season, hot summer
(Mid-latitude)	sub-tropical
Climates	Mediterranean	Csa	Dry hot summer
	Marine west coast	Cfb	No dry season, warm and cool
			summer
D–Cool Snow-forest Climates	Humid continental	Df	No dry season, severe winter
	Sub-arctic	Dw	Winter dry and very severe
E–Cold Climates	Tundra	ET	No true summer
H–Highland	Polar ice cap	EF	Perennial ice
	Highland	H	Highland with snow cover

Group A : Tropical Humid Climate : Tropical humid climates exist between Tropic of Cancer and Tropic of Capricorn.
Group B : Dry Climate : These climates are found from 15° to 60° latitudes in both hemispheres.
Group C : Warm Temperate (Mid latitude) Climates : Warm temperate (Mid-latitude) climates extend from 30° to 50° latitudes mainly on the eastern and western margins of the continents. These climates have warm summers and mild winters. 
Group D :  Cold Snow-forest Climates  : These climates are found in the Northern Hemisphere between 40°–70° north latitudes in Europe, Asia and North America. 
Group E : Polar Climates : These climates exist poleward off 70° latitudes.
Group H :  High Land Climate : These climates are governed by topography. There is a vertical zonation or layering of climatic types with elevation in mountainous regimes.