Collect
Check out my collection
0
Useful +1
This term is missingA Diagram for the OverviewAdd relevant content to make the entry more complete, but also quickly upgrade, hurry toEDITORC 'mon!
The minimum temperature refers to a certain
time
probably
Space
Within the
Air temperature
The lowest value of
. At 07:00 on January 22, 2023, Mohe City, Daxing 'anling Region, Heilongjiang Province
The town of Amur
The lowest temperature measured in Jingtao meteorological station is -53℃, which is the lowest in the history of China's meteorological records
Air temperature
Record.
[2]
- Chinese name
- Minimum air temperature
- Foreign name
- minimum air temperature
Minimum air temperature: the lowest value of air temperature in a given time or space. For example, the daily minimum temperature and the annual minimum temperature. Daily minimum temperatures usually occur around sunrise in the early morning. Annual minimum
Air temperature
At medium and high
latitude
Inland, January is the lowest, and on the sea, February is the lowest.
Most of the Earth's heat comes from the sun, but the direct heat source of the lower atmosphere (the troposphere, which corresponds to what we call "temperature") is not the sun but the surface. The heat of the sun radiates in short waves
Radiation
Mainly, only by the atmosphere (mainly
Breath
And ozone) absorb very little (ultraviolet light), and reach the ground to warm the ground. The temperature of the ground is much lower than that of the sun, and the radiation emitted is mainly long-wave radiation, and the absorption of these radiation by the near-surface atmosphere is very strong (mainly water vapor, impurities and water in the troposphere)
Carbon dioxide
), thus forming a change in temperature.
As the earth absorbs heat from the sun, it loses heat of its own. When surface revenue is greater than expenditure, surface temperature will rise. When revenues are less than expenditures, ground temperatures drop. When the solar radiation reaches the maximum (generally at noon), the ground is heated to the highest value, and with the reduction of solar radiation, the ground heat income decreases, but it is still greater than the expenditure, still heating the air and raising the temperature. At about 2:00 p.m., the ground heat income is less than the expenditure, and the temperature slowly drops. Before sunrise, the ground temperature reaches its lowest point, and the temperature also reaches its lowest point of the day.
[1]
Similar to the daily minimum/maximum temperature, the heat budget of the ground also shows this trend throughout the year. On the summer solstice (June 22), the height of the sun in the middle and high latitudes of the northern hemisphere reaches the maximum value of the year, and the heat income of the ground is the highest. After the height of the sun decreases, the heat income of the ground decreases, but it still exceeds the expenditure, so the temperature still continues to rise, which is why the hottest month in most parts of the country is not June, when the solar radiation is strongest, but July. Correspondingly, the weakest month of solar radiation is December, but the lowest month of temperature is January, which is the "Three Nine" period in Chinese tradition.
The specific heat capacity of water is large and has a significant effect on climate change. In the same case of heating or cooling, the temperature change of water is small, and this feature of water has a great impact on climate. During the day, the temperature in coastal areas rises more slowly than that in inland areas, and the temperature in coastal areas decreases less at night. Therefore, the temperature change in coastal areas is small in a day, and the temperature change in inland areas is large.
Land and sea breeze
The reasons are similar.
therefore
Marine climate
In the stronger regions (coastal, island), the warmest months of the year come later, and the coldest months come later. In August and February.
