Climatic Regions

  • Climatic Controls: Each climate has specific characteristics influenced by various factors including geography, vegetation, and soil types.
  • Repeatable Patterns: Climates can be seen across different regions following similar patterns geographically.
  • Connection: Understand the intricate connections between climate, vegetation, and soil.

Köppen Climate Classification

  • Major Climate Groups:
    • A: Equatorial (tropical rainforests, tropical monsoon, tropical savanna)
    • B: Arid (deserts, steppes)
    • C: Warm Temperate (humidsubtropical, Mediterranean)
    • D: Snow Climates (humid continental, subarctic)
    • E: Polar (tundra, ice cap)

Precipitation and Temperature Codes

  • Precipitation and Temperature Indicators:
    • W: Desert
    • S: Steppe
    • f: Fully Humid
    • h: Hot Arid
    • k: Cold Arid
    • a, b, c: Classifications based on summer warmth

Climogram Reading

  • Key Factors to analyze:
    • Location: Geographic context.
    • Climate Characteristics: Specific climate type.
    • Latitude: Degree of latitude impacts temperature and precipitation.
    • Fluctuations in Precipitation and Temperature: Monthly variances.

Summary of Climate Types (Köppen)

GroupTypeLetter CodeCharacteristics
Tropical HumidTropical WetAfNo dry season
Tropical HumidTropical MonsoonAmShort dry season
Tropical HumidTropical Wet and DryAwMonsoonal, distinct wet/dry seasons
Dry ClimateSubtropical steppeBShSemi-arid conditions
Dry ClimateSubtropical desertBWhArid conditions
Warm TemperateHumid subtropicalCfaWarm summers, mild winters
Warm TemperateMediterraneamCsDry hot summers
Cold ClimatesHumid continentalDfbMild summers, cold winters
Cold ClimatesSubarcticDwSevere winters
PolarArcticEFPerennial ice coverage

Tropical Rainforest (Af Climate)

  • Characteristics:
    • Broadleaf evergreen trees
    • Multi-tiered forest structure
    • Exceptional biological diversity
    • Dominant soils: Oxisols
    • Lacks distinct seasonal variation.

Savanna (Aw Climate)

  • Characteristics:
    • Located on either side of tropical rainforests
    • Distinct wet and dry seasons
    • Vulnerable to wildfires
    • Typical soils: Ultisols

Mild Mid-Latitude - Mediterranean Climate (Cs)

  • Characteristics:
    • Mild, wet winters and hot, dry summers
    • Found in areas around the Mediterranean Sea, California, and parts of Australia
    • Supports Mediterranean oak-woodland vegetation.

Humid Subtropical Climates (Cfa)

  • Characteristics:
    • Located on the eastern sides of continents
    • Hot summers with mild winters
    • Diverse vegetation and soil types.

Cold Climates and Snowy Regions (D climates)

  • Differences Between D Climates:
    • Dfa: Humid continental; no dry season.
    • Dfb: Misses true summer; experiences severe winter.
    • Dw: Subarctic climate, very short summer.

Tundra (ET Climate)

  • Characteristics:
    • Short, cool summers with long cold winters
    • Vegetation limited to grasses, mosses, lichens
    • Permanent snow cover for most of the year.

Icecaps (EF Climate)

  • Characteristics:
    • All average monthly temperatures are below freezing
    • Year-round snow and ice coverage
    • Vegetation and soil are nearly absent; located at high latitudes.

Soil Orders by Climate

  • Different soil orders are often associated with specific climates (e.g., Ultisols dominate in savanna areas, Oxisols in tropical rainforests).
  • Understanding the link between soil characteristics and climate helps in predicting agricultural potential and land usage.