What is the relationship between predicting temperature change and sun position change?

Take the northern hemisphere as an example. The sun shines directly in the northern hemisphere. The sun is high, the days are long and the temperature is high in the northern hemisphere. In the southern hemisphere, the sun shines directly, while in the northern hemisphere, the height of the sun is small and the temperature is low.

The main factor of temperature rise and fall is the relationship between heat budget (not considering the heat exchange caused by atmospheric circulation). Received > support, heating up; Otherwise, it will cool down. Income mainly comes from solar radiation (which occurs during the day); Expenditure is mainly ground long-wave radiation (all day). According to Wien's displacement law, the higher the temperature, the stronger the outward radiation, which in common parlance means the faster the heat dissipation.

Extended data:

The temperature mentioned in the weather forecast was measured on the thermometer in the louver box 1.5 meters above the ground of the observation site. Because the thermometer keeps good ventilation and avoids direct sunlight, it is representative. The difference of temperature is one of the main factors that cause the difference between natural landscape and our living environment, which is closely related to our life.

Temperature records can characterize the thermal characteristics of a place, which is indispensable in both theoretical research and the application of national defense and economic construction. Temperature is one of the conventional measurement elements in ground meteorological observation.

The temperature has a fixed temperature (the basic station observes four times a day, and the four hours are 02, 08, 14 and 20 respectively; According to the actual situation, some stations observe three times a day, at 08: 00, 14 and 20: 00 respectively. Reference station observation 24 times a day), as well as the daily maximum and daily minimum temperature.

Daily changes, the highest temperature is around 2 pm, and the lowest temperature is around sunrise. The annual change shows that it is the hottest in July, the coldest in June, the hottest in August and the coldest in February in the northern hemisphere in 65438+ 10. The southern hemisphere is opposite to the northern hemisphere.

Temperature distribution: It decreases from low latitude to high latitude, so the isotherm is generally parallel to latitude. The temperature of the sea and land at the same latitude is different. In summer, the isotherm protrudes in the direction of high latitude on land and in the direction of low latitude on the ocean.

References:

Baidu encyclopedia-temperature