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Early Greek View of Earth’s Climate - PowerPoint PPT Presentation

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Early Greek View of Earth’s Climate. K ö ppen climate classification. --average monthly temp. Chart for Determining K ö ppen classification. The K ö ppen system uses a series of letters to designate climate:. Koppen 2 nd and 3 rd letter designations. A climates.

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Early Greek

View of



Köppen climate classification

--average monthly temp.

Chart for




The Köppen system uses a series of letters to designate climate:

Koppen 2nd and 3rd letter designations

A climates

m – short dry season (monsoon)

s – dry summer (rare)

“Night is winter in the tropics”—


“Genetic” ClassificationKöppen symbol

--warm, humid year-round

--controls: ITCZ

mT air masses

--warm, humid year-round; short

dry season

--Controls: ITCZ,

on-shore winds in rainy season

--longer dry season than monsoon


ITCZ in rainy season (“summer”)

STH in dry season (“winter”)

B climates

S– potential evapotranspiration exceeds


W– potential evapotranspiration

is 2x precipitation

--hot, dry year round

--Controls: STH

cT air masses

--not as dry as #4

--Controls: same as #4

-- seasonal rainfall due

to either ITCZ or Mid-latitude


--Controls --cold ocean currents

--e.g. Atacama Desert, Chile

--colder than #5 due to

higher latitude

--Controls: long distance

to moisture source; rainshadows

--similar to #7, but with more

summer convective rainfall