Post on 05-Aug-2020
2.8 Climatic Zones
P. 75 fig. 5.1
2.8.1 Describe climatic conditions within selected zones p. 75
• 6 climate regions Each has sub-regions
2.8.1 Listing climate zones
Tropical1. Wet
2. Wet & dry
Dry1. semi-arid
2. arid
Temp. Mild winter1. Marine west coast
2. Mediteranian3. subtropical
Temp. Cold Winter1. Continental warm summer2. Continental cool summer
3. Subarctic
Polar1. Tundra2. Ice cap
Highland
Global Climatic regions
2.8.1 Tropical Climates
• All Tropical Climates Temp. over 180C every day due to low latitude & warm ocean currents & prevailing winds.
2) Tropical wet& dry sub-region; very heavy summer rain & very dry winter due to seasonal shift in prevailing winds. (monsoon regions)
1) Tropical Wet sub-region; heavy rain all year due to hot temp & resulting convectional rain.
2.8.1 Tropical Climate graphs
Tropical wet Climograph p. 77 fig. 5.4 bottom climograph
• Precipitation in each month is high
• Temperature constant & high (19-270C)
Tropical Wet sub region
2.8.1 Tropical Climate graphs
Tropical wet & Dry Climograph p. 76 Bombay India
• Precipitation is very high in summer months and very low in winter months
• Temperature relatively constant & high (19-270C)
Tropical Wet& Dry Sub-region
2.8.1 Dry Climates • All Dry climates receive – < 500mm precipitation annually – More evaporation than
precipitation – Little vegetation & windy
1) Arid or Desert dry climates – Occur between 10-30oN &
10-30oS – 0-250mm rain annually
2) Semi-arid Steppe dry climates – Transition Zone
between desert & Forest
– 250-500mm rain annually
2.8.1 Dry Climate graphs
Arid /Desert Climograph p. 76 fig. 5.2 Alice springs Australia
• Precipitation in each month is low (total less than 250mm)
• Temperature may vary seasonally
Arid or Desert Climate
2.8.1 Dry Climate graphs
Semi-Arid Climograph p. 77 fig. 5.4 top left climograph
• Precipitation in each month is fairly low (total less than 500mm)
• Temperature may vary seasonally
Semi-Arid - Steppe
2.8.1 Temperate Mild winter • Temperate Mild Winter – Mid Latitudes – Mild winter – Temperature varies
with seasons
3) Marine west coast • is farther from the
equator • warmed by warm
ocean current
1) Mediterranean • Limited to
Mediterranean sea area
2) Subtropical • East coast of continents • Close to tropics
2.8.1 Temperate Mild Winter
Summer temperatures vary but winter temps above –3oC
Temperate Mild Winter Mediterranean, Subtropical or Marine West Coast?
2.8.1 Temperate Cold Winter
Summer temperatures vary but winter temps below –3oC
Temperate Cold Winter
2.8.1 Polar Climates
Summer temperatures vary but winters warmer than –3oC
2) Tundra: summer temperature never above 10oC
1) Ice Caps: summer temperature never above 0oC
Polar Climates
2.8.2 Patterns of climatic zones
• Globally speaking where is each climatic zone concentrated?
1. Tropical ____
2. Dry ____
3. Temperate ___
4. Polar ____
5. Highland ____
2.8.2 Practice • Question #2 p. 75 Part a
• Gerogetown, Guyana
- Tropical wet
• Bombay, India
- Tropical Wet & Dry
• Montreal
- Temperate cold Winter
• Alice Springs Australia
- arid/semiarid
2.8.2 Practice • Question #2 p. 75 Part b • Montreal & Alice Springs
have wide temperature ranges
• Re. Temperature ; colder winter in Montreal
• Re. precipitation; more in Montreal
• Re. Months of summer; opposite summer months due to North & south Hemispheres
2.8.2 Practice • Question #2 p. 75 Part c • Different hemispheres give
opposite seasons
• Question #2 p. 75 Part d • Montreal = temperate cold
winter • Alice springs = Semi-arid
• Question #3 p. 77 is a good practice question too.