Climatic Classification: Wladimir Peter Köppen ( UG Hons. 2nd year

Climatic Classification: Wladimir Peter Köppen
( UG Hons. 2nd year)
by
Dr. Ruksanara Begum, Asstt. Prof. in
Geography, Barasat Govt. College
1
Early Greek
View of
Earth’s
Climate
2
Chart for
Determining
Köppen
classification
3
The Köppen system uses a series of letters to designate climate:
4
5
6
7
8
9
10
Koppen 2nd and 3rd letter designations
A climates
m – short dry season (monsoon)
s – dry summer (rare)
―Night is winter in the tropics‖—
11
CLIMATE CLASSIFICATION
―Genetic‖ Classification
Köppen 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
12
--longer dry season than monsoon
--Controls:
ITCZ in rainy season (―summer‖)
STH in dry season (―winter‖)
13
14
15
16
17
18
19
Main control on A climates:
20
B climates
S– potential evapotranspiration exceeds
precipitation
W– potential evapotranspiration
is 2x precipitation
21
--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
cyclones
22
--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
23
24
25
26
27
28
THANK YOU
29