Current meteorological data
Air temperature: 43.34 (°F)
6.3 (°C)
Wind speed:11.2 (km/h)
Wind direction: W, 277.5 °
Global radiation: 79.6 (W/m²)
Precipitation: 0.0 (ltr/m²)
(Updated: 12/10/2018, 11:00,
S-Mitte, Schwabenzentrum)
More meteorological data
More about weather Stuttgart
Current sun location
Webcams in Stuttgart
Weather forecast Stuttgart 
Weather forecast Europe 
Weather radar Germany 
More links

News and current events
Third update of the Stuttgart Air Pollution Plan (Part Plan Stuttgart)
Download LRP (Nov. 2018)
Graphics (and pdf files) of the current fine dust values of the LUBW station Am Neckartor. (German)
Grafics PM10
Air: Press releases (German)
Summer Days and Hot Days in Stuttgart (graphics)
Urban climate Viewer: Maps and plans with detailed thematic maps on climate, air and noise
Noise Maps Stuttgart 2017
Noise action plan Stuttgart
Clean air plan Stuttgart
Fine dust alarm Stuttgart
NO2 and PM10 exceedances
Current measurements from the stations (LUBW)
Picture gallery      More news
5. Wind conditions
5.3 Wind field with simultaneous consideration of the topographic conditions



Fig. 5-6: Wind field in Stuttgart with large-scale inflow from the Northwest (10 m/s at 700 m asl.)
What is important in an area with a marked topographic structure is, besides cold-air flows, the local dynamic changes in the supraregional wind. Like this, the wind direction can be canalised in valleys and significant changes in the wind speed can occur around hills. While higher wind speeds can be measured on knolls due to the nozzle effect, wind speeds are significantly lower in the wind shadow.

The above-mentioned effects can be calculated for the city of Stuttgart with the help of the diagnostic wind field model and the DIWIMO calculation model (SCHÄDLER, 1996). The influence of the topographic conditions on the wind field was analysed within Urban Climate 21 for the eight main wind directions (N, NE, E, SE, S, SW, W, NW). The basic assumption for the analysis was a neutral atmospheric stratification or a slight inversion condition as these are the average conditions in Stuttgart.


Fig. 5-7: Wind field in the proximity of the plan area for Stuttgart 21 with large-scale inflow from the Southwest (10 m/s at 700 m asl.)
The basic assumption for the calculations was a consistent inflow at an altitude of 700 m asl. with a wind speed of 10 m/s. The calculated wind directions and wind speeds apply to an altitude of 10 m above ground.

Figure 5-6 shows Stuttgart's flow field for the wind direction (inflow direction) NW. Figures 5-7, 5-8 and 5-9 show the situation for the plan area and for the wind directions SW, E and NW. What you can see clearly in each figure is the higher wind speeds on the knolls (Uhlandshöhe, Kriegsberg) and the considerably reduced wind speeds in the city basin and on the lee side of the hills.

If you mingle the results from the wind field calculations with those of the cold-air flows and if you include the frequencies of individual situations, you receive wind roses as presented in chapter 5.4.

Fig. 5-8: Wind field in the proximity of the plan area for Stuttgart 21 with large-scale inflow from the East (10 m/s at 700 m asl.)

Fig. 5-9: Wind field in the proximity of the plan area for Stuttgart 21 with large-scale inflow from the Northwest (10 m/s at 700 m asl.)


 
 

© City of Stuttgart, Office for Environmental Protection, Section of Urban Climatology