Where can I find wind roses everywhere?
If you need a wind rose map of a certain area, you can ask the local meteorological bureau. "Wind direction rose map" is the wind direction distribution map of a given place over a period of time. Through it, we can know the local dominant wind direction. The most common wind direction rose diagram is a circle, and 16 rays represent 16 different directions. The length of each straight line is proportional to the frequency of the wind in this direction. The static wind frequency is in the middle.
Air pollutants produced by industrial enterprises are mainly diluted and diffused by gas movement. The frequency of wind direction indicates the number of blows in a certain wind direction and shows the pollution opportunity in the downstream area of a certain wind direction. If the frequency is high, there will be more pollution opportunities in the downstream area of the wind direction, and vice versa. Therefore, industries with waste gas pollution are usually arranged on the side of the minimum wind frequency in the wind rose diagram; Wind speed determines the diffusion speed of pollutants. The greater the speed, the longer the waste gas discharged by the factory, and the more the outside air is mixed in. The smaller the concentration of pollutants; On the contrary, the lower the speed, the greater the concentration of pollutants, so industries with waste gas pollution should be arranged in the direction of high wind speed. The wind rose map reflects the important information of meteorological element wind. Based on this information, wind pollution theory can effectively guide urban planning and industrial layout, and can also be used to analyze the rationality of urban land use.