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1. Mid-latitude Cfa, Dfa, Dfb Climates Calee Lord
2. The Cfa, Dfa, and Dfb climates are classified as “Mid-Latitude Wet”
Cfa-Humid Subtropical
Dfa and Dfb-Humid Continental
Dfa-Long summer
Dfb-Short summer
3. Mechanism Ferrel Cell
Hadley Cell
Subtropical High
4. Ferrel and Hadley Cells
5. Subtropical High
6. Cfa Climate
7. What makes a Cfa climate? According to the Köppen Climate Classification System:
C- Warm, dry summers and cool, wet winters.
f- Moist with adequate precipitation in all months and no dry season.
a- Hot summers where the warmest month is over 22°C (72°F).
8. Example of Cfa: Charlotte, NC
10. Dfa and Dfb Climate
11. What makes Dfa and Dfb Climates? Major difference is the duration and heat of summer
Dfa is a long and hot (or very warm) summer
Dfb is a short and warm summer
D-Total precipitation is not very high and seasonal temperatures vary widely
f-Moist with adequate precipitation in all months and no dry season
a-Hot summers where the warmest month is over 22°C (72°F)
b-warm summer with the warmest month below 22°C (72°F)
12. Example of Dfa: Chicago, IL
13. Example of Dfb: Albany, NY
15. Conclusions Most of the world’s population lives in these temperate climates
Most land of the world is located in mid-latitudes—mid-latitudes are where the temperate climates occur
Many people think of the temperate climate as the “just right” climate
Not “too hot” like the tropics, and not “too cold” like the colder climates
The temperate climates are just right for human comfort and for growing crops that feed large populations
16. References www.weatherbase.com
http://74.125.113.132/search?q=cache:q_awr7QFK0cJ:www.umsl.edu/~naumannj/Geography%25201001%2520articles/Ch%25202%2520climate%2520%26%2520weather/World_Climate_and_Vegetation_Zones%255Bupdated%255D.doc+cfa+climates+%28places+in+the+world%29&cd=37&hl=en&ct=clnk&gl=us
http://www.meted.ucar.edu/afwa/climo/intro/content/6_3_pop.htm
http://www.meted.ucar.edu/afwa/climo/intro/print.htm
http://docs.google.com/viewer?a=v&q=cache:LJe6exsoddQJ:phillipshs.wcpss.net/Earth_Sci_pdf/Temperate%2520Climates.pdf+cfa+climates+%28places+in+the+world%29&hl=en&gl=us&pid=bl&srcid=ADGEESgQJgSLK3ByTJfMTaUSIcFJf98agGZIvEeF-0q-i_OMHYrKAMarL-w0yFJ5NgkB0RkVeDNd8ADGSqJAUAQSuHMpHJoTHIYLQm6mc0KVLj7vuUM_gTXEyjiRGRsa80DaMB4xDGdk&sig=AHIEtbSAslzBxTlqe_upaynXNkvGjYagUQ