How to calculate the temperature of the river with the air temperature, and how many degrees of the

Since the temperature change of water lags behind the temperature change of air, the relationship between air temperature and river temperature is not simply linear. The best way to know exactly what the temperature of the river is is to take an actual measurement.

However, based on existing research, there are some empirical relationships that can be used to estimate the temperature of the river. For example, depending on the combination of average air temperature and relative humidity, the temperature of the river can be estimated between the to. The specific estimation method needs to be adjusted according to the actual situation.

The temperature of the water in the river is closer to the air temperature The temperature of the water in the reservoir is closer to the temperature of the ground, especially the water at the bottom. There is a clear positive correlation between water temperature and air and ground temperature. How the water temperature of a reservoir is calculated is usually based on the surface water temperature value.

There is still a considerable difference between the temperature and temperature of the river. If you want to know exactly the temperature of the river, you still need to actually measure it. In addition, the temperature in the river water varies from season to season and from location to location, so you can measure the temperature in several locations and calculate the average value.

The HX-RS series has a temperature monitoring system that specializes in measuring the temperature of the river, including temperature sensors and meters, which can measure the temperature of the river at different depths. The data can be displayed on the spot, and the historical history can also be stored, which is very convenient to use.

The water temperature of the water in the river is related to the air temperature, and the air humidity, the fluidity of the water, the different water layers, the sunlight exposure and other factors.

When the average temperature is 30°C and the relative humidity is 65%, the upper water temperature of the water in the river is;

When the relative humidity is 60%, the upper water temperature is;

When the relative humidity is 70%, the upper water temperature is.

In fact, the correlation between relative humidity and upper water temperature is about 1°C lower than that of the above three data.

Celsius has been incorporated into the International System of Units. In physics, the Celsius temperature scale is expressed as t, the absolute temperature scale (unit: Kelvin) is expressed as t, and the conversion relationship is t=. Celsius is a special name for the temperature of Celsius instead of Kelvin, numerically 1k = 1°C.

Fahrenheit and Celsius are both units used to measure temperature. The vast majority of countries in the world, including my own, use Celsius; Fahrenheit is used in only five countries in the world, including the Bahamas, Belize, the British Cayman Islands, Palau, the United States of America and other dependent territories (Puerto Rico,**, United States Virgin Islands).

First of all, it depends on the water used in the city.

The second thing to look at is how long the water stays in the pipe.

Thirdly, it depends on the local temperature.

Some urban water supply is all groundwater, the water temperature is low, generally 14-15 degrees Some urban water supply is all surface water, the water temperature is high, generally 18-20 degrees The water temperature of tap water is lower than the air temperature How much lower is there no certain ratio If it is cooling down these days, then the water temperature is relatively warm If it is warming, then the water temperature is relatively low There is a lag process.

22 degrees, see the temperature distribution in the Yangtze River estuary in July.

A: When the temperature in the south is 14 degrees, the temperature of the river will not be the same depending on the location. In Guangdong, the water temperature of the river will be 18-20, which will be lower the further north you go, depending on the air temperature and the underground temperature.

The air temperature is 20 degrees Celsius, and the water temperature is 17-18 degrees Celsius, and the temperature of the water in general is about 2 to 3 degrees Celsius lower than the ambient temperature.

Generally, the temperature of the river water is related to the temperature of the surrounding air and the density of the river water, the temperature of the river near the surface is similar to the air temperature (from Jing Mingyuan to the rapid heat transfer), and the temperature of the bottom layer of the river is about 4 degrees (if it is deep enough), because the water density at this temperature is the largest, at the bottom, and it is not easy to be affected by the temperature of the surface air.

The air temperature is 3°, the crystal clear river water, the water temperature is 3 4, because the river water touches the riverbed and the earth, and the earth temperature changes slower than the air temperature and is higher than the air temperature!

The water of the deeper rivers has a bottom temperature of 4 and a surface temperature of 3, because the water density is the highest at 4 and sinks at the bottom.