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Climatic Zones p. 75-81 P. 75 fig. 5.1.

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Presentation on theme: "Climatic Zones p. 75-81 P. 75 fig. 5.1."— Presentation transcript:

1 Climatic Zones p P. 75 fig. 5.1

2 6 climate regions Each has sub-regions

3 Tropical Climates - Common
Temp. over 180C every day A relatively flat temperature line Low latitude Between the “Tropics!” Warm ocean currents and Prevailing winds.

4 Tropical Climates-Sub Regions
Tropical Wet & Dry Sub- region Very heavy summer rain Very dry winter due to seasonal shift in prevailing winds. Monsoon regions Seasons- dry or wet Tropical Wet Subregion Heavy rain all year due to high temp Resulting convectional rain. Precipitation in each month is high

5 Tropical Wet & Dry - Climate graphs
Precipitation is very high in summer months and very low in winter months Relatively flat temperature line Temperature relatively constant & high (19-270C) Wet and dry seasons Wet and dry monsoons

6 Tropical Wet - Climate graphs
Precipitation in each month is high Temperature constant & high (19-270C) Relatively flat temperature line

7 Dry Climates

8 Dry Climates All Dry climates: < 500mm precipitation annually
More evaporation than precipitation No cloud cover High daytime temperatures Low nighttime temperatures Temperatures may vary seasonally Cold ocean currents Rain shadow areas

9 Dry Climates Semi-arid steppe Sub- Region
Arid or Desert Subregion Occur between 10-30oN & 10-30oS 10-250mm rain annually Cold ocean currents and rain shadow areas Hot days but cool nights Little cloud cover allows heat in during day but heat to escape at night Semi-arid steppe Sub- Region Transition Zone between desert & Forest mm rain annually Seasonal shift in prevailing wind Hot days but cool nights – little cloud cover

10 Arid - Climate graphs Arid /desert Climograph p. 76 fig. 5.2
Below is a climate graph for Berbera, Somalia Precipitation in each month is low (total less than 250mm) Temperature may vary seasonally

11 Semi-Arid - Climate graphs
Monthly precipitation is fairly low Annual total is less than 500mm Temperature may vary seasonally

12 REMEMBER!!!! The main factor that characterizes the DRY climate zone is the amount of precipitation – there is not very much!

13 Temperate Mild winter Temperate Mild Winter
Usually near oceans (coastal) Four seasons Higher latitudes result in cooler winters but warm summers Temperature in coldest month is above –3oC Close enough to equator to affect temperature

14 Temperate Mild winter Marine west coast
Coastal regions Many found on west coast of continents… Winters are mild Warmed by warm ocean current Summers are cool and wet Orographic precipitation on mountains

15 Temperate Mild winter Mediterranean
Mostly around Mediterranean sea area. (Italy, Greece) Hot and DRY summers Wind from land has little moisture Mild winters Moderating warm wind from the ocean

16 Temperate Mild Winter - Subtropical
Close to “Tropics” Hotter summers Colder Winters & More precipitation Less moderated by ocean but frontal rainfall as polar and tropical air meets More summer precipitation Convectional rain due to high temperatures

17 Which is: Marine West Coast , Mediterranean, Subtropical?

18 Temperate cold winter Also called Continental
Locations generally affected by continentality Generally the mid Latitudes Main distinguishing factor for the 3 subregions in this group is latitude – closer to equator vs. further from the equator Temperature of the coldest month is below –3oC Higher latitudes increase seasonal affect.

19 Temperate cold winter - Continental Warm Summer
Compared to the other sub-regions in this group: Summer is warmer Lower latitude -closer to the equator

20 Temperate cold winter - Continental Cool Summer
Further north than the Continental Warm Summer. Result - Summer is cooler than in the Continental Warm Summer. Also means less precipitation than in the Continental Warm Summer.

21 Continental Subregion
* Temp Range increases as you move inland. Away from moderating influence of ocean. * Summer days are very long. Higher latitude – increases effect of earth’s tilt. * Summer temp decreases as latitude increases. Further from direct rays of sun. * Summer has highest precipitation. Frontal rainfall as polar and tropical air masses meet.

22 Temperate cold winter - Subarctic
Winters are long and very cold – High latitude Little precipitation Too cold Heavy snow Too cold for snow to melt

23 Compare precipitation and temperature!!
Which is: Continental Warm Summer, Continental Cool Summer, Subarctic? Subarctic Compare precipitation and temperature!! Continental Warm Summer Continental Cool Summer Which is further north??

24 Polar Region Polar Region High latitudes (+60o latitude) Near poles

25 POLAR CLIMATES Temperature never goes above 100 C High Latitude
Sun may not shine for months High latitudes increase the effect of the tilt of the earth

26 Polar Region – Tundra Less severe on the coast
Has moderating influence of the ocean

27 Polar Region –Ice Cap More severe inland, away from the ocean
Temperatures never go above 0o C Continentality makes it colder. Away from moderating influence of ocean

28 Which is Tundra, which is Ice Cap?
Notice how little precipitation occurs.

29 Highlands Elevations over 1000 m
Colder conditions than the lower lying areas surrounding it. Elevation decreases temperatures

30 Patterns of climatic zones
Globally speaking where is each climatic zone concentrated? Tropical ____ Dry ____ Temperate ___ Polar ____ Highland ____

31 Practice Question #2 p. 75 Part a Georgetown, Guyana Tropical
(Tropical wet) Bombay, India Tropical - Monsoonal (Tropical Wet & Dry) Montreal Temperate Cold Winter (Continental Warm Summer) Alice Springs Australia Dry (arid/semiarid)

32 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

33 Practice Question #2 p. 75 Part c
Different hemispheres give opposite seasons Question #2 p. 75 Part d Montreal = temperate cold winter (Cont. Warm Summer) Alice springs = Dry (Semi-arid) Question #3 p. 77 is a good practice question too.

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