How to calculate the daily temperature range?

Daily temperature difference = daily maximum temperature-daily maximum temperature.

Daily temperature range = daily maximum temperature-daily minimum temperature. The daily temperature difference, also called the daily temperature difference, is the difference between the highest temperature and the lowest temperature in a day. Its size is related to latitude, season, surface characteristics and weather conditions.

In meteorology, the physical quantity representing the degree of air heat and cold is called temperature, which is referred to as temperature for short. The international standard unit for temperature measurement is Celsius (℃).

The temperature mentioned in the weather forecast refers to the air temperature measured in the open air without direct sunlight (usually measured by blinds). The highest temperature is the highest temperature in a day, generally appearing in14-15; The lowest temperature is the lowest temperature in a day, usually before sunrise.

Factors affecting the daily temperature range:

1. The low latitude area is larger than the high latitude area: the average value of low latitude area is 12℃, the middle latitude area is 7-9℃, and the high latitude area is 3-4℃.

Reason: The lower the latitude, the greater the daily variation of the sun's height.

2. In mid-latitude area, summer is greater than winter, but in low-latitude and high-latitude areas, it doesn't change much with the seasons.

3. As far as land and sea are concerned, the ocean is smaller than the inland: the average ocean is only 1-2℃, and the inland can reach 15℃, even 25-30℃.

Reason: the difference of thermal properties between land and sea.

As far as the weather is concerned, the daily range of cloudy days is smaller than that of sunny days.

Reason: On cloudy days, the atmosphere has a stronger weakening effect on solar radiation and heat preservation.

5. As far as topography is concerned, the valley is bigger than the peak, and the depression is bigger than the height. Mountains are smaller than plains.

6. This is also related to the nature of the surface. Turpan basin in northwest China is known as "wearing a fur coat in the morning, wearing a shirt in the afternoon and eating watermelon in the stove", and the daily temperature difference is above 15℃.