Consider the following description : 1. Annual and daily range of temperatures is low. 2. Precipitation occurs throughout the year. 3. Precipitation varies between 50 cm – 250 cm. What is this type of climate ?
Contents9
- AEquatorial climate
- BChina type climate
- CHumid subtropical climate
- DMarine West coast climate
Show answer
Answer: (D) Marine West coast climate
Correct Answer: (d) Marine West Coast climate.
The three clues point to Marine West Coast (also called British-type) climate:
- Low annual AND daily temperature range — because the ocean moderates temperatures year-round.
- Precipitation throughout the year — frequent cyclonic storms from the Westerlies bring rain in all seasons.
- Precipitation between 50–250 cm — some areas can receive up to 250 cm annually.
This climate is found in:
- coastal Oregon/Washington/British Columbia
- northwestern Europe
- southeastern Australia
- New Zealand
- coastal Chile.
Easy elimination:
- Equatorial climate has much higher rainfall (200+ cm) and temperatures.
- China type has distinct wet/dry seasons.
- Humid subtropical has hot summers and greater temperature range.
Marine West Coast climate occurs in narrow coastal strips where ocean winds moderate temperatures year-round, creating the distinctive low temperature ranges described.
The key distinguishing feature is precipitation throughout the year from cyclonic storms, unlike other climates that have distinct wet and dry seasons.
UPSC is testing whether students can differentiate climate types based on specific quantitative parameters rather than just general descriptions.
Marine West Coast Climate
Geography Marine West coast climate 50 cm – 250 cm precipitation occurs throughout the year
Marine West Coast Climate: Characteristics & Global Distribution
Also called British-type or Oceanic climate - found on western coasts between 40°-60° latitude
Low temperature range both annually and daily due to ocean moderation
Year-round precipitation from westerlies and cyclonic storms (50-250 cm annually)
Found in northwestern Europe, Pacific Northwest USA/Canada, Chile, southeastern Australia
What Creates This Climate
Marine West Coast climate occurs on western coasts between 40°-60° latitude where oceanic influence dominates. The ocean acts as a thermal regulator, keeping temperatures moderate year-round, while westerly winds bring frequent cyclonic storms that provide consistent precipitation.
Key Climate Characteristics
Characteristic | Details | Cause |
|---|---|---|
Annual Temperature Range | 5°-10°C only | Ocean moderates extremes |
Daily Temperature Range | Very low (5°-8°C) | Maritime influence |
Precipitation Pattern | Throughout the year | Westerlies + cyclonic storms |
Precipitation Amount | 50-250 cm annually | Orographic + cyclonic rainfall |
Seasons | Cool summers, mild winters | Ocean thermal lag effect |
Global Distribution Map
Source: Britannica — Marine west coast climate | Characteristics & Facts | Britannica · www.britannica.com
Regional Examples
# Marine West Coast Regions
## Northwestern Europe
- UK & Ireland
- Western France
- Netherlands & Belgium
- Western Norway
## North America
- Pacific Northwest USA
- British Columbia Canada
- Coastal Oregon/Washington
## Southern Hemisphere
- Central Chile
- Southeastern Australia
- New Zealand
- TasmaniaQuestion Connection
This PYQ tested recognition of Marine West Coast climate through its three diagnostic features: low temperature range (ocean moderation), year-round precipitation (westerlies), and specific rainfall amounts (50-250 cm). The combination of these three clues uniquely identifies this climate type.
Don't confuse with Equatorial: Equatorial has much higher rainfall (200+ cm) and higher temperatures
China type has distinct seasons: Wet summers, dry winters - not year-round precipitation
Humid subtropical has hot summers: Marine West Coast has cool summers due to ocean influence
Location matters: Marine West Coast is always on western coasts between 40°-60° latitude
Major World Climate Types
Geography Equatorial climate China type climate Humid subtropical climate
World Climate Types: Key Distinguishing Features
Equatorial: High rainfall (200+ cm), uniform high temperatures, no seasons
China Type: Distinct wet summer/dry winter, continental temperature extremes
Humid Subtropical: Hot summers, mild winters, moderate rainfall throughout year
Marine West Coast: Cool summers, mild winters, moderate rainfall year-round
Climate Type Comparison
Climate Type | Temperature Range | Precipitation Pattern | Annual Rainfall | Key Locations |
|---|---|---|---|---|
Equatorial | Very low (2°-3°C) | Year-round heavy | 200+ cm | Amazon, Congo Basin |
China Type | High (20°+ C) | Summer wet, winter dry | 75-150 cm | Eastern China, Korea |
Humid Subtropical | Moderate (15°-20°C) | Year-round | 100-150 cm | Southeastern USA, Eastern Australia |
Marine West Coast | Low (5°-10°C) | Year-round moderate | 50-250 cm | UK, Pacific Northwest |
Quick Recognition Tips
Low temperature range + year-round rain = Marine West Coast or Equatorial
Seasonal precipitation (wet/dry seasons) = China Type or Tropical
Very high rainfall (200+ cm) usually = Equatorial climate
Continental location = China Type; Coastal location = Marine/Humid Subtropical
Precipitation amount is key: 50-250 cm eliminates Equatorial (which exceeds 200 cm)
Year-round rain eliminates China type: China type has distinct dry winter season
Temperature range distinguishes: Marine West Coast has lower range than Humid Subtropical
Don't ignore latitude: Each climate type has specific latitudinal belts