What s the reason why the snow hasn t been so heavy lately It s not fun to get out of the sun during

What is your geographical location?

I haven't heard of global warming now.

Global industry, transportation is becoming more and more developed, fuel emissions of carbon dioxide, carbon dioxide density is lower than air, covering the most surface of the earth, the long-wave radiation released after the ground warms but is absorbed by carbon dioxide and other substances in the atmosphere, just like a layer of quilt on the earth, can not reflect the upper atmosphere, so the surface temperature of the earth will be higher and higher, the scientific name "greenhouse effect".

The ensuing consequences of climate anomalies are infectious diseases, insect pests (frozen to death), rising sea levels (due to the large population of the northern hemisphere, the greenhouse effect is the most serious, the ice in the Arctic has melted a lot, we are pulling in the northern hemisphere), in short, if this carbon dioxide emission is not controlled and treated, our children and grandchildren of the next n generations will not live long, go their own way so that future generations have no way out... Ay..

On Earth, water is constantly circulating, the water in the ocean and the ground is heated and evaporated into the sky, and these water vapors move with the wind to other places, and when they encounter cold air, they form precipitation and return to the earth's surface. There are two types of precipitation: one is liquid precipitation, which is rain; The other is solid precipitation, which is snow or hail, etc.

The greenhouse effect is that when the temperature rises, there is less cold air, so there is less snow.

I think so

Forehead... To put it simply.

The weather is gradually getting warmer

The clouds in the sky condensed and froze into snow and fell, and the sky was naturally clear when the clouds covered the sun.

In fact, as long as it is daytime, there must be the sun, and we can't see the sun because it is obscured by the clouds in the sky, and the sun can't see the ground.

When the outside temperature, water vapor saturation, and condensation nuclei reach the conditions for the formation of snow, it will snow, regardless of whether the sun appears or not.

Three necessary conditions are required for the formation of snow: temperature, water vapor saturation and condensation nuclei, and as long as the three conditions are met, the snow requirements can be satisfied.

1. When there is a sun in the sky, it is a normal natural phenomenon that the outside temperature is below zero in winter, because in winter in China, the sun shines near the Tropic of Capricorn, and the sunshine time in China is short, the temperature is low, and it is often below zero (the crystallization temperature of water) in winter.

2. Affected by the region, wind direction, that is, other special reasons, the relative humidity in the air may be very large at a certain height within a certain time, so that the water vapor saturation in the air will be very high, and ice crystals are more likely to be produced than water droplets in a high-altitude and low-temperature environment.

3. Condensation nuclei in the air are very small solid particles suspended in the air, which are related to local environmental factors.

From the above analysis, there is a high probability of snow in the sun, because the appearance of the sun is not the main direct factor in the formation of snow, as long as the influence of the sun on temperature has a certain limit, snow can be formed.

01 When strong cold air passes over warm water, dry cold air and warm and moist air meet to form snowfall, and at the same time, Altostratus does not cover enough to cover the sun, so that sunlight may shine obliquely through the gaps in the clouds, so that the ground will see sunlight and snow at the same time.

Solar snow is a unique weather phenomenon called cold current snowfall, which is the result of the local convergence of cold and warm air masses.

When strong cold air passes over warm water, cold dry air and warm moist air meet to form snowfall, and at the same time, Altostratus does not cover enough to cover the sun, so that sunlight may shine obliquely through the gaps in the clouds, so that the ground will see sunlight and snow at the same time. Put simply, when the cloud cover is not very large, the temperature is low, and there is enough moisture in the air, solar snow may occur.

In general, solar snow lasts for a short period of time and has little snowfall, which is a localized short-term snowfall and has no special meteorological significance. It has also been discovered that the snowflakes of the sun's snow sometimes seem to fall from the sky instead of falling from the sky, but from the bottom to the top. This phenomenon occurs because the snowflakes are drier, lighter, and more windy, creating the illusion that the snowflakes are floating from the bottom to the top.

Rain, snow, strong winds, and cooling from October 8 to 10 were accompanied by strong convective weather, especially in late autumn, which is rare in history.

Why did the first snow come so early this year, and how wide and intense the rain and snow weather was, "the Northeast Cold Vortex brought rain and snow weather".

According to the analysis of the weather situation, the weather process is the eastward extension of the high pressure ridge in the Ural Mountains on October 8, and the high-altitude trough in front of the ridge was cut off into the 21st northeast cold vortex this year. The cold vortex moved eastward and strengthened in the south, the Mongolian cyclone on the surface moved eastward, and the high and low air in Liaoning were cyclonic circulations with strong upward movements. In addition, the low-level jet stream before the cold vortex transports warm and humid air, and the cold and warm air converge in our province, resulting in precipitation above moderate rainfall in most areas. Due to the warm and humid air over the Yellow and Bohai Seas, the cold air from Lake Baikal and the polar regions are constantly involved in the Northeast Cold Vortex, the temperature from 850 hPa to the surface fluctuates between -4 and 6, and the phase transition of rain and snow is complex, and heavy snow to heavy snow occurs in the central and northern regions.

As long as it is daytime, the sun is always "out", but local weather and other meteorological reasons will cause the sun to be invisible. Snow and rain out of the sun are normal weather changes, but compared to rain, snowfall generally covers a larger area, and snow out of the sun is less common.

The snowfall process is generally produced under the action of a strong cold air mass, for our country in winter, the cold death mass in Siberia and other places goes south, and meets the local air mass, because the density of the cold air mass is large, the gas cold sinks and the light one lifts, and the air mass with higher local temperature is lifted to a higher place with the temperature drops, the water vapor carried in the gas will condense into water droplets or ice crystals, and the water droplets fall is rainfall, and the ice crystals fall is snowfall and other processes.

However, the ice crystals can continue to combine with water vapor to develop and grow during the descent process, so the diameter of the snow flakes can reach one or two centimeters, and the surface tension of the water is not enough to sustain large raindrops, and the raindrops are also blown by the updraft when they fall, and the volume is even more difficult to maintain, and the largest diameter of the raindrops recorded by scientists is between centimeters and 1 centimeter. It is also because the cold air mass is mostly a large-scale air mass movement, so the cooling and snowfall weather usually covers a larger area, and the snowfall is accompanied by less sun, but it is not nothing.

To put it bluntly, rain or snowfall is caused by atmospheric flow within a certain range, and the clouds formed in the flowing atmosphere are thin and thick, high and low, dry and wet, and the permeability is different, so some places may be accompanied by the sun when snowfall. The sun is always there, the difference is that the snowfall days are generally cloudy, the power of the sun in winter is relatively low, the sun is difficult to disperse the clouds, there are clouds in the formation of rain or snowfall, and the distance of the snow floating in the air is also affected by the wind, in the edge of the rain and snow weather, there may be a weather phenomenon of the sun while snowing, and the sun at that time is generally not very strong, that is, you can see some.

Some time ago, snow in some places was accompanied by thunder and lightning, which is also a meteorological phenomenon caused by natural causes, but at that time, the atmospheric humidity was higher, the density was greater, and the friction with the ground could produce more electric charges, and the snow was also a more humid type.

There are many kinds of natural weather phenomena, and we generally only notice those that are more special, but they are nothing more than another change in the precipitation process, and there is nothing special about it.

Because the temperature is low and the air humidity reaches a certain requirement, it snows, which has nothing to do with the lack of sun.

This is a natural phenomenon, and the main reason for the formation of solar snow is the formation of snowfall due to the influence of cold air, and at the same time, the thickness and density of the cloud cover cannot block the sun, so there is a weather phenomenon of snow and sun at the same time.

Because the climate and environment have reached the conditions for snow, and the sun is not necessary for snow, it still snows when the sun is out.