Causes of Leng Xia fever in winter in Xiaogan area

The causes of winter Leng Xia fever in Xiaogan area are mainly caused by the following aspects:

1. Geographical location: Xiaogan area is located in the middle of China, belonging to temperate monsoon climate zone. Affected by warm and humid air and cold air, the seasons alternate obviously, and it is hot in Leng Xia in winter.

2. Topography: The terrain in Xiaogan area is low, mostly plains and hills. In the plain area, the sun shines directly on the ground in summer, and the surface temperature rises and heat accumulates, resulting in higher temperature in summer. At the same time, the terrain is low, the air circulation is poor, the heat dissipation is difficult, and the weather is sultry.

3. Solar radiation: In winter, the solar altitude angle is low and the amount of solar radiation is small, which leads to the decrease of the surface temperature and the low temperature. In summer, the solar altitude angle is higher, the solar radiation increases, the surface temperature rises and the temperature is higher.

4. Climate circulation: prevailing southerly winds in summer bring warm and humid air flow, increase precipitation and humidity, and aggravate high temperature weather. The north wind is stronger in winter, which brings cold and dry airflow and lowers the temperature.

To sum up, the causes of winter Leng Xia fever in Xiaogan area can be attributed to the comprehensive influence of geographical location, topography, solar radiation and climate circulation.