What is the dominant wind direction in Guilin?

South wind prevails in Guilin in summer, including southeast wind and southwest wind. The southeast wind comes from the Pacific Ocean and the southwest wind comes from the Indian Ocean. They are all warm and wet, so summer is hot and humid.

The northwest wind prevails in winter, coming from Siberia. These dry and cold northwest air currents meet the high-altitude south branch jet stream, which forms rainfall, but the rainfall is not large, so it is cold in winter.

Spring and winter are the frequent seasons of environmental air pollution in Guilin. The reason is that Guilin is affected by downflow and other factors, and there is no rain and little wind. Meteorological conditions are not conducive to the dilution, diffusion and removal of air pollutants, which easily leads to the accumulation of pollutants near the surface. At the same time, Guilin is located in the northernmost part of the Xiang-Gui Corridor, and the terrain is the Northwest Corridor. The dominant wind direction for many years is the northeast wind, which is easily affected by pollutant transportation in the upwind area.

Precautions:

Guilin is located in the southwest of Nanling Mountain System, with medium and low mountain landforms, including karst mountains, hills and terraces. Guilin is a typical karst landform with high sides and low middle. It is located in a karst basin extending from northwest to southeast. Karst peak forest landform is a natural landscape tourism resource with world significance.

Guilin is located at low latitude and belongs to subtropical monsoon climate. The territory has a mild climate, abundant rainfall, long frost-free period, abundant sunshine and heat, long summer and short winter, four distinct seasons, basically the same rainy and hot seasons, and favorable climatic conditions. The annual average temperature 18.9℃ is the hottest in August, the monthly average temperature is 23℃, 65438+ 10/0 is the coldest, the monthly average temperature 15.6℃, the annual average frost-free period is 309 days, and the annual average rainfall 1949.5 mm ..