| Dallas |
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| Institutions: |
Contact persons: |
| General Data Dallas |
| Geographic longitude (east) | ||||
| Geographic latitude (north) | ||||
| Total area (km²) | Inhabitants (1.1.1950) | |||
| Settlement area (%) | Inhabitants (1.1.1970) | |||
| Traffic area (%) | Inhabitants (1.1.1997) | |||
| Agricultural area (%) | Density of Inhabitants ( I / km²) | |||
| Forested area (%) | ||||
| Water bodies (%) | Motor vehicles (1.1.1950) | |||
| Road network (km) | Motor vehicles (1.1.1970) | |||
| Mean altitude (above sea-level) | Motor vehicles (1.1.1997) | |||
| Lowest point (above sea-level) | ||||
| Highest point (above sea-level) | Motor vehicles / 1000 inhabitants (1997) |
| Air Pollution Dallas |
No data available
| Mean climatic data Dallas |
Parameter |
JAN |
FEB |
MAR |
APR |
MAY |
JUN |
JUL |
AUG |
SEP |
OCT |
NOV |
DEC |
YEAR |
Period |
Mean air temperature (°C) |
7.7 |
9.7 |
13.4 |
18.3 |
22.7 |
27.4 |
29.4 |
29.4 |
25.5 |
19.9 |
12.7 |
8.9 |
18.8 |
30 |
Mean maximum air temperature (°C) |
12.8 |
15.6 |
19.4 |
23.9 |
27.8 |
32.2 |
34.4 |
34.4 |
31.1 |
25.6 |
18.9 |
13.9 |
23.9 |
34 |
Mean minimum air temperature (°C) |
2.2 |
4.4 |
7.8 |
12.8 |
17.3 |
21.7 |
23.9 |
23.3 |
20.0 |
13.9 |
8.3 |
3.3 |
13.3 |
34 |
Absolute maximum air temperature (°C) |
31.1 |
33.9 |
35.6 |
35.6 |
39.4 |
40.6 |
40.6 |
43.3 |
41.1 |
37.8 |
30.6 |
27.2 |
43.3 |
33 |
Absolute minimum air temperature (°C) |
-19.4 |
-16.7 |
-11.7 |
-1.1 |
6.7 |
11.7 |
13.3 |
13.9 |
2.2 |
-3.3 |
-7.2 |
-12.2 |
-19.4 |
34 |
Mean relative Humidity (%) |
70 |
67 |
62 |
64 |
69 |
67 |
62 |
62 |
65 |
66 |
65 |
67 |
65 |
17 |
Mean precipitation (mm) |
59 |
65 |
72 |
102 |
123 |
82 |
49 |
49 |
72 |
69 |
69 |
68 |
879 |
30 |
Maximum precipitation (mm) |
215 |
195 |
242 |
352 |
349 |
309 |
195 |
275 |
132 |
204 |
252 |
155 |
18 |
|
Minimum precipitation (mm) |
8 |
14 |
4 |
28 |
39 |
7 |
dry |
<1 |
dry |
1 |
5 |
3 |
18 |
|
Maximum precipitation in 24 h (mm) |
131 |
69 |
135 |
130 |
158 |
104 |
137 |
233 |
83 |
166 |
127 |
85 |
233 |
20 |
Days with precipitation |
7 |
8 |
8 |
9 |
9 |
6 |
5 |
6 |
5 |
6 |
6 |
6 |
81 |
20 |
Mean sunshine (h) |
155 |
159 |
220 |
238 |
279 |
326 |
341 |
325 |
274 |
240 |
191 |
163 |
2911 |
30 |
Radiation (Ly/d) |
254 |
321 |
428 |
487 |
565 |
638 |
616 |
592 |
493 |
399 |
294 |
241 |
444 |
12 |
Potential evaporation (mm) |
8 |
15 |
34 |
72 |
118 |
171 |
192 |
183 |
130 |
73 |
29 |
10 |
1035 |
48 |
Mean wind speed (m/s) |
5 |
5 |
6 |
6 |
5 |
6 |
4 |
4 |
4 |
4 |
5 |
5 |
5 |
20 |
Wind direction |
S |
S |
S |
SSE |
S |
S |
S |
SSE |
SE |
SE |
S |
SSE |
12 |
Source of climatic data: M. Müller, 1983: Handbuch ausgewählter Klimastationen der Erde. Universität Trier. Forschungsstelle Bodenerosion.