The time period for which the minimum and maximum temperatures are used in the meteorological report

Meteorologically, 20 o'clock (Beijing) is the daily boundary, that is, from 20 o'clock today to 20 o'clock tomorrow is a day. However, the daily maximum temperature refers to the temperature from 02 o'clock to 02 o'clock, and the daily maximum temperature observation time is 02 o'clock, and the meter is adjusted after the observation data (that is, the maximum temperature table is restored), and the daily minimum temperature is the minimum temperature value within 24 hours between 14 o'clock and 14 o'clock, and the meter is adjusted after 14 o'clock observation. Usually the daily maximum temperature occurs during the day, mostly in the afternoon, and usually the minimum temperature occurs at night, mostly in the second half of the night, but there are unusual times, especially when there is an invasion of cold air or a sudden and violent rise in temperature.

The maximum temperature in the meteorological report is generally the highest temperature value within 24 hours between **14 o'clock and 15 o'clock, and the meter is adjusted after the observation data (that is, the maximum temperature gauge is restored), and the daily minimum temperature is the minimum temperature value within 24 hours between 02 o'clock and 02 o'clock, and the meter is adjusted after 02 o'clock observation. But there are also unusual times, especially when there is an invasion of cold air or a sudden and violent rise in temperature, and the time of occurrence is not the same.

That's the highest and lowest of all the temperatures in a 24-hour period.

daily maximum temperature and annual maximum temperature, etc. The daily maximum temperature generally occurs around 2 o'clock in the afternoon; The highest annual temperature is in July in the middle and high latitudes of the inland and August in the ocean.

Minimum air temperature, the lowest value of air temperature at a certain time or in a certain space. For example, daily minimum temperature and annual minimum temperature, etc. The daily minimum temperature generally occurs in the early morning around sunrise. The annual minimum temperature is lowest in January in the middle and high latitudes inland and February in the ocean.

In fact, the lowest temperature is December and March, which is colder at these times!

The atmosphere warms by absorbing long-wave radiation from the ground, which in turn depends on the amount of solar radiation absorbed by surface storage. Solar radiation is strongest at noon, but it takes a process for energy stored on the surface to be transmitted to the atmosphere, so the highest temperature is not noon, but at two o'clock in the afternoon. After that, the solar radiation continues to weaken, and the ground temperature and air temperature continue to drop, until by dawn, the ground heat is the least, the heat transferred to the atmosphere is the least, and the temperature is the lowest of the day.

The highest temperature of the day occurs around 2 p.m. and the lowest temperature of the day occurs in the morning.

When the air temperature reaches or exceeds 35 or more, it is called high temperature, and when it reaches or exceeds 37, it is called scorching heat, continuousThe heat is scorchingIt will make the human body unable to adapt and affect the physiology, psychology, and even cause illness or death.

WMO.

The recommended standard for high temperature and heat wave is: the daily maximum temperature is higher than 32 and lasts for more than 3 days. In Chinese meteorology, it is generally called high temperature when the daily maximum temperature reaches or exceeds 35. Hot weather.

It can make the human body feel uncomfortable and work efficiently.

Lowered, heat stroke.

There is an increase in the incidence of intestinal diseases and cardiovascular and cerebrovascular diseases. At the same time, high temperature weather will also have a great impact on agricultural production.

Chinese standards. In Chinese meteorology, when the temperature is above 35, it can be called "high temperature weather", and if the maximum temperature exceeds 35 for several consecutive days, it can be called "high temperature and heat wave" weather. Generally speaking, there are usually two situations of high temperature, one is dry heat high temperature with high temperature and low humidity; The other is the sultry heat with high temperatures and high humidity, which is called "sauna days".

The above content reference: Encyclopedia - hot weather.

Why the weather forecast to say today most.

High temperatures and tomorrow's lowest? In general, the highest temperature of each day occurs at 2 p.m. and the lowest temperature of each day occurs in the early morning before the sun comes out, which is the lowest temperature of the day. What does the weather forecast mean, that is, in addition to the weather forecast after early morning, therefore, the weather forecast for early this morning can only be today's maximum temperature and tomorrow's minimum temperature.

The temperature mentioned in the public weather forecast is the view of planting turf.

The thermometer measured on the louver box at a height of meters above the ground in the measuring field is well representative because the thermometer maintains good ventilation and avoids direct exposure from the sun. The difference in temperature is one of the main factors that cause the difference between the natural landscape and our living environment, and it is very closely related to our lives.

The maximum temperature is the highest temperature in a day, usually at 14-15 o'clock, and the lowest temperature generally occurs at 5-6 o'clock in the morning. China uses a Celsius temperature scale to express degrees Celsius.

Chinese Meteorology.

When the temperature is above 35, it can be called "high temperature weather", and if the maximum temperature exceeds 35 for several consecutive days, it can be called "high temperature heat wave" weather. Generally speaking, there are usually two situations of high temperature, one is dry heat high temperature with high temperature and low humidity; The other is the sultry heat with high temperatures and high humidity, which is called "sauna days".

Precautions for hot weather:

1. Pay attention to take effective protective measures when working outdoors, avoid being naked in the sun for a long time**, and it is best to bring cold drinks.

2. Be careful not to walk in the sun or go to places where people gather. After returning from the outside to the interior, do not turn on the air conditioner immediately.

3. Try to avoid traveling between 10 a.m. and 4 p.m., and drink water before you are thirsty.

Fourth, pay attention to dietary hygiene on hot days to prevent gastrointestinal colds.

Fifth, we should pay attention to maintaining adequate sleep, living and working regularly, and enhancing immunity.

1. The range of atmospheric temperature in hail is about 84 --2500.

2. Above 85 km, the temperature of the atmosphere is gradually rising (why?). strong solar radiation).

3. Between 0 12 km and 55 85 km, the temperature decreases with the increase of altitude.

4. Between the 12 55 km bends, the temperature increases with the increase of altitude.

The weather forecast of the meteorological station should always report a maximum temperature and a minimum temperature. We all have the experience that on a sunny day in summer, the hottest time is not at noon, but at two or three o'clock in the afternoon. The lowest temperature is in the early hours of the morning.

The sun shines directly on the ground at noon, so why isn't the hottest time at noon?

We know that the heat and cold of the weather is mainly determined by the temperature of the air, and the main factor affecting the air temperature is determined by the intensity of solar radiation. However, solar heat is not the main reason for the direct increase in temperature. In total, only about 14 of the heat energy directly absorbed by the air into the sunlight is absorbed by the ground, and about 43 is absorbed by the ground.

After the ground absorbs the radiant heat of the sun, it is transmitted to the air through radiation, convection, etc., which is the main reason for the increase in temperature.

When the sunlight hits the ground, it heats the ground, and the heat absorbed by the ground is released to dry the air, so after the ground is heated, it will take a while to make the temperature rise. After noon, the heat emitted by the ground is still less than the heat supplied by the sun until the afternoon.

At two or three o'clock, the ground temperature can rise to the highest, and the temperature is the highest.

In the same way, after the sun goes down, it loses the heat of the sun, therefore, it begins to continuously lose heat, and the airflow continues to decrease, and in the early morning of Tongna, the ground temperature drops to the lowest value, so the temperature is the lowest at this time.

During the day, the highest temperature occurs at 2 p.m. and the lowest temperature occurs around sunrise. Because the time of sunrise varies from place to place every day of the year, it is difficult to say what time the minimum temperature occurs.