Semiarid climate: Wikis

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Hot Semi-arid climate zones of the world
Cold Semi-arid climate zones of the world

A Semi-arid climate or steppe climate describes climatic regions that receive low annual precipitation, usually (but not always) between 250-500 mm (10-20 in) of precipitation. A more precise definition is given by the Köppen climate classification that treats steppe climates (BSk and BSh) as intermediates between the desert climates (BW) and humid climates in ecological characteristics and agricultural potential. The Köppen climate classification allows adjustments for temperature and for excluding forested regions (such as those in most of Canada and Siberia). Semi-arid climates tend to provide scrubby vegetations in regions where they exist. There are two variations of the semi-arid climate, a hot semi-arid climate (BSh) and a cold semi-arid climate (BSk).

To determine whether an area indeed has a semi-arid climate, the precipitation threshold must first be determined. Finding the precipitation threshold (in millimeters) involves first multiplying the average annual temperature in °C by 20, then adding 280 if 70% or more of the total precipitation is in the high-sun half of the year (April through September in the Northern Hemisphere, or October through March in the Southern), or 140 if 30%–70% of the total precipitation is received during the applicable period, or 0 if less than 30% of the total precipitation is so received. If the area's annual precipitation is less than the threshold but more than half the threshold, it is classified as a BS (steppe climate).

Contents

Hot Semi-arid climates

Hot semi-arid climates (type "Bsh") tend to be located in the tropics and subtropics. This variation of semi-arid climates tends to have hot, sometimes extremely hot summers and mild to warm winters. Snow rarely (if ever) falls in these regions. This variation can be found in Australia, South Asia, sections of Africa and the Lesser Antilles.

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Notable Cities with Hot Semi-arid climates

Cold Semi-arid climates

Cold semi-arid climates (type "Bsk") tend to be located in temperate zones. Like hot semi-arid climates, they tend to have hot, sometimes extremely hot summers. Unlike hot semi-arid climates, areas with this variation of semi-arid climates tend to have cold, sometimes very cold winters. These areas usually see some snowfall during the winter. Also, areas featuring cold semi-arid climates tend to have higher elevations than areas with hot semi-arid climates. Finally areas featuring cold semi-arid climates are sometimes subject to major temperature swings during a 24 hour period, sometimes by as much as 50°F in that timeframe. These temperature swings are seldom seen in hot semi-arid climates.

Notable Cities with Cold Semi-arid climates

Examples of regions with Semi-arid biomes

Oceania

South America

North America

Asia

Africa

Europe

Charts of Selected Cities

Hot Semi-arid climates

Gaborone
Climate chart (explanation)
J F M A M J J A S O N D
 
 
96
 
32
20
 
 
87
 
32
19
 
 
71
 
30
17
 
 
40
 
28
13
 
 
12
 
24
9
 
 
5
 
23
4
 
 
2
 
23
5
 
 
5
 
26
8
 
 
15
 
31
15
 
 
43
 
33
17
 
 
66
 
33
18
 
 
88
 
32
18
average max. and min. temperatures in °C
precipitation totals in mm
Monterrey
Climate chart (explanation)
J F M A M J J A S O N D
 
 
15
 
20
10
 
 
16
 
22
12
 
 
18
 
27
15
 
 
29
 
30
18
 
 
43
 
32
22
 
 
64
 
34
23
 
 
54
 
35
24
 
 
62
 
35
24
 
 
133
 
32
22
 
 
72
 
28
18
 
 
26
 
24
14
 
 
16
 
21
11
average max. and min. temperatures in °C
precipitation totals in mm
source: MSN Weather UK (2009-01-07), INEGI, 2006 report
Curaçao
Climate chart (explanation)
J F M A M J J A S O N D
 
 
45
 
30
24
 
 
26
 
30
24
 
 
14
 
31
25
 
 
20
 
31
26
 
 
20
 
32
26
 
 
19
 
32
26
 
 
40
 
32
26
 
 
42
 
32
26
 
 
49
 
33
27
 
 
84
 
32
26
 
 
97
 
31
26
 
 
100
 
30
25
average max. and min. temperatures in °C
precipitation totals in mm
source: Meteorological Service of the Netherlands Antilles and Aruba
Lahore
Climate chart (explanation)
J F M A M J J A S O N D
 
 
23
 
20
6
 
 
29
 
22
9
 
 
41
 
27
14
 
 
20
 
34
20
 
 
22
 
39
24
 
 
36
 
40
27
 
 
202
 
36
27
 
 
164
 
35
26
 
 
61
 
35
24
 
 
12
 
33
18
 
 
4
 
27
12
 
 
14
 
22
7
average max. and min. temperatures in °C
precipitation totals in mm
source: World Weather Information Service[2]
Murcia
Climate chart (explanation)
J F M A M J J A S O N D
 
 
25
 
17
4
 
 
28
 
18
5
 
 
30
 
20
7
 
 
27
 
23
9
 
 
32
 
26
12
 
 
20
 
30
16
 
 
5
 
33
19
 
 
10
 
34
20
 
 
27
 
30
17
 
 
44
 
26
13
 
 
32
 
20
8
 
 
21
 
17
5
average max. and min. temperatures in °C
precipitation totals in mm
source: Agencia Estatal de Meteorología[3]
Cobar
Climate chart (explanation)
J F M A M J J A S O N D
 
 
48
 
34
21
 
 
43
 
33
20
 
 
34
 
30
17
 
 
27
 
25
13
 
 
33
 
20
9
 
 
28
 
17
6
 
 
28
 
16
5
 
 
27
 
18
6
 
 
25
 
22
9
 
 
35
 
26
13
 
 
34
 
29
16
 
 
36
 
33
19
average max. and min. temperatures in °C
precipitation totals in mm
source: [4]

Cold Semi-arid climates

Denver
Climate chart (explanation)
J F M A M J J A S O N D
 
 
13
 
6
-9
 
 
12
 
8
-7
 
 
33
 
12
-4
 
 
49
 
16
1
 
 
59
 
21
7
 
 
40
 
28
12
 
 
55
 
31
15
 
 
46
 
30
14
 
 
29
 
25
9
 
 
25
 
19
2
 
 
25
 
11
-5
 
 
16
 
7
-9
average max. and min. temperatures in °C
precipitation totals in mm
source: NWS Denver/Boulder, CO
Punta Arenas
Climate chart (explanation)
J F M A M J J A S O N D
 
 
38
 
14
7
 
 
23
 
14
7
 
 
33
 
12
5
 
 
36
 
10
4
 
 
33
 
7
2
 
 
41
 
5
1
 
 
28
 
4
-1
 
 
31
 
6
1
 
 
23
 
8
2
 
 
28
 
11
3
 
 
18
 
12
4
 
 
36
 
14
6
average max. and min. temperatures in °C
precipitation totals in mm
source: BBC Weather
Kabul
Climate chart (explanation)
J F M A M J J A S O N D
 
 
34
 
4
-7
 
 
60
 
6
-6
 
 
68
 
12
1
 
 
72
 
19
6
 
 
23
 
24
9
 
 
1
 
30
12
 
 
6.2
 
32
15
 
 
1.6
 
32
14
 
 
1.7
 
28
9
 
 
3.7
 
22
4
 
 
19
 
15
-1
 
 
22
 
8
-5
average max. and min. temperatures in °C
precipitation totals in mm
source: Weather Underground

Tashkent

Climate chart (explanation)
J F M A M J J A S O N D
 
 
55
 
6
-3
 
 
47
 
8
-2
 
 
72
 
14
4
 
 
64
 
22
10
 
 
32
 
27
14
 
 
7
 
33
18
 
 
4
 
36
19
 
 
2
 
34
17
 
 
5
 
29
12
 
 
34
 
21
7
 
 
45
 
14
3
 
 
53
 
9
-0
average max. and min. temperatures in °C
precipitation totals in mm
source: World Climate Charts
Comodoro Rivadavia
Climate chart (explanation)
J F M A M J J A S O N D
 
 
16
 
26
13
 
 
13
 
25
13
 
 
21
 
22
11
 
 
23
 
19
8
 
 
30
 
14
5
 
 
25
 
11
3
 
 
28
 
10
3
 
 
23
 
12
3
 
 
12
 
15
5
 
 
14
 
19
7
 
 
10
 
22
10
 
 
15
 
24
12
average max. and min. temperatures in °C
precipitation totals in mm
source: Weather 2 Travel
Eldorado County Weather
Zaragoza
Climate chart (explanation)
J F M A M J J A S O N D
 
 
22
 
10
2
 
 
20
 
13
4
 
 
20
 
17
5
 
 
35
 
19
7
 
 
44
 
23
11
 
 
31
 
28
15
 
 
18
 
32
18
 
 
17
 
31
18
 
 
27
 
27
15
 
 
30
 
21
10
 
 
30
 
14
6
 
 
23
 
11
4
average max. and min. temperatures in °C
precipitation totals in mm
source: Weatherbase[5]

See also

References


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