The geographical environment of Qilihe District

The area has a continental semi-arid climate. The main characteristics are: four distinct seasons, long winter and summer, short spring and autumn. Rain and heat occur in the same season, and vertical climate variability is significant. Temperature, heat, and sunlight increase with altitude from south to north; rainfall decreases from south to north.

In spring, precipitation is low; evaporation is large, and the climate is dry. There are often spring droughts, cold wave cooling, and wind, sand and dust. There is a lot of haze in the river valley basin. The wind direction is mainly easterly and southeasterly.

In summer, the days are hot, the mornings and evenings are cool, there is little rain in early summer, high evaporation, and obvious drought; there are many thunderstorms in midsummer, hail disasters often occur in mountainous areas, and the wind direction is mainly southeasterly and southerly.

Autumn and early autumn are rainy, with less light and high humidity; in late autumn, precipitation decreases and the climate becomes colder, with cold wave cooling and early frost damage common. The wind direction is mainly northwest and northerly.

In winter, the weather is freezing, dripping water turns into ice, and there is drought and little snow. There is a lot of haze in the basin. The wind direction is mainly northerly and northeasterly.

Temperature, inter-annual changes are getting warmer. The temperature is relatively high in winter, and sometimes significantly lower in spring and summer. Annual changes: The temperature rises quickly in spring and cools down quickly in autumn. The temperature in spring is higher than that in autumn. Low and high in summer. Winters are warmer and warmer. Diurnal variation is greatly affected by cloud cover. On a sunny day, the highest temperature occurs between 14:00 and 15:00 in summer and between 13:00 and 14:00 in winter. The daily minimum temperature occurs around sunrise in the early morning; on cloudy and cloudy days, the daily temperature changes are complex and irregular.