How is the change of temperature affected?

The diurnal range at 1) latitude decreases with the increase of latitude. This is because the change of sun height in a day decreases with the increase of latitude. The daily temperature difference in tropical areas is about 65438 02℃. The daily range of temperate zone is 8.0 ~ 9.0℃; The daily temperature difference of polar circle is 3.0 ~ 4.0℃.

(2) Generally, the daily range in summer is greater than that in winter, but in the middle and high latitudes, the maximum daily range in a year appears in spring. Because in summer, although the height angle of the sun is large, the sunshine time is long and the temperature is high during the day, the daily temperature difference in summer is not as large as that in spring because of the short day, short cooling time and high temperature at night in the middle and high latitudes.

(3) The daily temperature difference in low-lying areas (such as basins and valleys) is greater than that in flat areas, and the flat areas are greater than that in convex areas (such as hills). The terrain is low and concave, the contact area between the air and the ground is large, the ventilation is not smooth, and the heat is not easy to be lost. At night, it is often the place where cold air sinks and meets along the hillside, and radiation cools down, so the daily temperature difference is large. On the other hand, due to Fiona Fang's high altitude and small area, the temperature in the upper part of the protruding terrain is less affected by the surface and mainly regulated by the surrounding air, so it is not easy to rise during the day and fall at night. The daily temperature difference is usually smaller than the flat land at the same latitude, the flat land is between the two, and the valley is larger than the mountain peak; The plateau is larger than the plain: for example, the Qinghai-Tibet Plateau has high altitude, thin air and relatively little air quality, water vapor and impurities. During the day, the atmosphere has a weak weakening effect on solar radiation, the amount of solar radiation reaching the ground is large, and the atmospheric inverse radiation is weak at night, so the daily temperature difference is large; The plain in the middle and lower reaches of the Yangtze River is low and flat, with a large water area, and atmospheric quality, water vapor and impurities are concentrated at the bottom of the troposphere. During the day, the atmosphere has a strong weakening effect on solar radiation, and at night, the atmospheric inverse radiation is strong, so the daily temperature difference is small.

(4) Properties of the underlying surface Due to the different specific heat characteristics and solar radiation absorption capacity of the underlying surface, the daily temperature difference is also different. The daily temperature difference on land is greater than that on the sea, and the farther away from the sea, the greater the daily temperature difference. The daily temperature difference of sandy soil, dark soil and dry loose soil is greater than that of clay, light soil and moist compact soil, and that of dry land is greater than that of paddy field.

(5) The daily temperature difference on sunny days is greater than that on cloudy days (rainy days), because the sun radiation is strong during sunny days, the ground temperature is strong, and the effective ground radiation is strong at night. The daily temperature difference in windy days is small.

(6) No matter what terrain, the closer to the ground, the greater the diurnal range, because the direct heat source of the atmosphere is the ground long-wave radiation.