There is so much water vapor evaporating in the desert, where does it go if it doesn t rain?

The main reason is the irregular rainfall, which leads to the absence of vegetation. Without vegetation, water cannot be stored on the ground in the sun. Eventually, the land was rocky desertified, sand covered the water source, and finally turned into a vast desert.

In the vast desert, there is no water and plants to store energy for the sun, so the temperature difference can be large. In the end, people and animals and plants are even less likely to stay here, so it becomes a complete endless cycle.

Desert mainly refers to barren areas where the land is completely covered with sand, plants are very scarce, rainfall is scarce, and the air is dry.

If there is a relatively large reservoir somewhere in the desert, there will naturally be vegetation around it, and the vegetation can hold water and moisten the soil. The withered foliage of vegetation can enrich the soil. The roots of the tree must ensure that the soil around it does not turn into sand to cover the water source.

Naturally, it will become a virtuous circle and an oasis. Therefore, the desert is not without hope. As long as humanity is interested in breaking the vicious circle, it is entirely possible that deserts will become land again.

Because there is no water in the desert, there is no water vapor without water, and without water vapor, there are no water droplets that can be formed, and the water droplets in the clouds must be released at a certain temperature, and there are no water droplets that can be formed when the temperature is high in the desert area. However, the desert is not without hope. As long as humanity is interested in breaking the vicious circle, it is entirely possible that deserts will become land again.

The wind and sand are all over the sky, and the birds are uninhabited. Many people's first impression of the desert is that it is difficult to leave these scary places as long as you go inside. However, the desert has the beauty of the desert and still attracts a large number of "explorers" to conquer the desert every year.

The Atacama Desert is the driest desert in the world, and it never rains.

For example, the evaporation of the Tarim Basin is 3000 mm, that is just the result of calculation, in fact, it is impossible to have so much water to evaporate, otherwise 400,000 square kilometers of evaporated water is more than one trillion, more than the Yangtze River runoff, how can there be so much water in the Tarim Basin, the Tarim River Basin almost includes the entire surface water, about 40 billion, plus some of the top of the sky that does not form surface water and drill sand hundreds of billions, Less than a fraction of the amount of evaporation. Calculating evaporation and actual evaporation are not the same concept, for example, Qinghai Lake, the actual annual evaporation is about 4 billion cubic meters, which is really evaporated from the lake 40 square meters. - Dividing line ———

Some of the water evaporated from the desert will cause rain locally, but more will flow to other places with dry air currents, and the density of moist air is too low to form rainfall. For example, the Tarim Basin is surrounded by plateaus, like the Pamir Plateau and the Qinghai-Tibet Plateau, which are more than 4,000 meters above sea level, and the humid air is generally below 2,500 meters above sea level, that is to say, the outside humid air cannot turn in, and all that goes into it is some dry air currents with low water content, and the water evaporated in the local area cannot form a higher density, and it cannot rain, so it can only drift away with the dry air current. It can be said that there is actually very little water vapor in the local area, and it depends more on the direction of the moist air flow, and the water that evaporates from the ocean and more places is more, such as Australia, the Sahara Desert and the Arab region, there is no local moisture flow through, plus there is no mountain block, and the passing wet air flow will also drift away with the wind and not land locally.

I think the temperature in the desert is very high, and if it doesn't rain, the water vapor can't stay.

In fact, deserts are generally found inland, and there is also a subtropical high pressure zone [near the north-south dimension 30]. First of all, the inland, far from the ocean, the ocean effect is less, the influence of the ocean is less, and the evaporated water vapor from the sea surface cannot enter the inland too much.

It doesn't rain in the desert because they need a lot of water vapor for volatilization.

The rain will eventually be stored in the desert, and there is actually some moisture underneath the ground.

It's raining in the desert. Desert areas have a dry climate with scarce rainfall, with annual precipitation below 250 mm, and some desert areas receive less than 10 mm of annual precipitation. Desert mainly refers to a barren area where the ground is completely covered with sand, plants are very scarce, rainfall is scarce, and the air is dry.

The desert is also known as the "sand curtain", an area where there is a shortage of water and few plants.

Desert: The desert area is mostly sandy beaches or sand dunes, and rocks under the sand are often found. Some deserts are salt flats and completely devoid of vegetation.

Deserts are generally aeolian landforms. There are sometimes valuable mineral deposits in the desert, and many oil deposits have been discovered in recent times. The desert is rarely inhabited, and the resources are relatively easy to exploit.

The desert has a dry climate, and it is also a happy place for archaeologists, who can find many human artifacts and earlier fossils.

Definitely, but most of them evaporated before they reached the ground.

Concept]: Desert, also known as sand desert, the full name of sandy desert (English: erg), one-third of the earth's land is desert.

Because there is very little water, it is generally thought that the desert is desolate and lifeless, and it is called "barren sand". Compared to other areas, there is not much life in the desert, but if you look closely, you will find that there are many plants and animals hidden in the desert, especially those that come out at night. The desert area is mostly sandy beaches or sand dunes, and rocks under the sand are often found.

The soil is thin and there are few plants. Some deserts are salt flats and completely devoid of vegetation. Deserts are generally aeolian landforms.

Rainfall conditions]:

Water vapor concentration. Condensation nuclei.

Decrease in air pressure (natural rainfall is generally caused by a decrease in temperature).

Desert climate]:

Evaporation is fast, and water vapor is not easy to concentrate.

The climate is dry and there are no condensation nuclei.

The temperature in the desert drops sharply at night, but due to the flow of the atmosphere, the pressure drops only when there are high mountains in the desert, but there are no mountains in the desert.

Result]: The above three conditions are not easy to meet in the desert, so even if the rain enhancer is artificially released, it will not rain in the desert. Unless the weather is abnormal, or it is cloudy and rainy.

It also rains in the desert. Desert areas have a dry climate with little rainfall, with annual precipitation of less than 250 mm, and some desert areas have less than 10 mm of annual precipitation (such as the Taklamakan Desert in Xinyi, China), but there are occasional sudden heavy rains. Evaporation in desert areas is significant, far exceeding the local precipitation; The humidity of the air is on the low side, and the relative humidity can be as low as 5%.

It also rains occasionally in the desert, often stormy. The Sahara Desert once recorded 44 mm of precipitation in three hours. At this time, the normally dry river will quickly fill with water, and it is prone to flooding.

Although it rains less in the interior of the desert, the desert often feeds from rivers that flow from the nearby mountains. These rivers generally carry a lot of earth and run dry up after a day or two in the desert. There are only a few major rivers in the world that flow through deserts, such as the Nile in Egypt, the Yellow River in China, and the Colorado River in the United States.

Climate change is significant, with average annual temperature differences generally exceeding 30 degrees Celsius. The difference in absolute temperature is more often above 50 degrees; The daily temperature difference is extremely significant, with near-surface temperatures reaching 60 to 80 degrees Celsius in summer and autumn at noon, and dropping below 10 degrees Celsius at night.

Desert areas often have clear skies, cloudless skies, and strong winds, with maximum winds reaching hurricane proportions. Causes of tropical deserts: Mainly shrouded by the subtropical high pressure, the air sinks and warms more, inhibits surface convection, and is difficult to cause rain.

If it is isolated by high mountains, located inland, or on the west coast of the tropics, deserts can be formed. For example, the desert in the interior of the Australian continent was formed because the sea breeze had lost all its water when it arrived. Sometimes, deserts also form on the leeward side of mountains.

That's 99 percent of the way. It's just relatively rare. Because there are also some animals and plants in the desert, they need water, and they all have their own set of methods to resist drought, for example, the leaves of cacti have evolved into needles, which can prevent the evaporation of water and protect their own safety.

That's why it rains in the desert. Got it.

Of course, it will fall, but the rainfall is pitiful, for example, if you have 100 mm of rainfall a year, then in the desert it is only 10 mm. There are also creatures in the desert, plants, animals can't live without water, you say that it doesn't rain in the desert.

Let's take a look at the conditions of Chengyu first:

1.Water vapor concentration. 2.Condensation nuclei. 3.Decrease in air pressure (natural rainfall is generally caused by a decrease in temperature).

Look at the desert climate again:

1.Evaporation is fast, and water vapor is not easy to concentrate. 2.The climate is dry and there are no condensation nuclei.

Maybe you would say that sand is not a condensation nucleus? You must know what the order of magnitude of the condensation nucleus is, if the sand can be the condensation nucleus of rain, then how much the ground will be thickened in a rainfall, and the rainfall will also add an important indicator - the amount of sediment fall; 3.The temperature in the desert drops sharply at night, but due to the flow of the atmosphere, the pressure drops only when there are high mountains in the desert, are there high mountains in the desert?

Probably the line is small.

Generally, the above 3 conditions are not easy to meet in the desert. So even if you release the rain booster artificially, it won't rain in the desert. Unless the weather is abnormal. Or the clouds and rain.

Although the desert lacks moisture, there is still a certain degree of water vapor. Water vapour is the form of water that exists in a gaseous state, and it can be released from a body of water or a wet front moistened surface by evaporation. Although water sources are very limited in desert areas, there are some cases where water can still be present in deserts.

First, desert areas may have groundwater sources. Groundwater is water in underground rock formations that can appear on the surface in the form of wells or springs. These groundwater source lead types can provide water vapor.

Second, even if there is no obvious source of water in the desert area, there will be some plants that adapt to the desert environment and are able to survive. These plants absorb groundwater through their roots and release water into the air through transpiration. This released water is present in the desert atmosphere in the form of water vapor.

In addition, desert areas can also be affected by water vapor from nearby oceans or lakes. Water vapor can be transported to desert areas by winds in the atmosphere, where it condenses into clouds or fog. This phenomenon is known as "ocean clouds".

In summary, despite the lack of water in desert areas, there is still some water vapour in the presence of water vapor, including underground water sources, transpiration from plants, and water vapour from nearby oceans or lakes.

Deserts have low evaporation and low natural precipitation due to their low vegetation coverage.

First, the desert has less vegetation, so there is less evaporation.

Another important reason for the lack of water in the desert is the influence of the pressure zone. There are some deserts that are affected by the subtropical highs and trade wind belts all year round, which leads to the formation of some deserts. Among them are the Sahara Desert in Africa and the Great Desert of the Arabian Peninsula.

Although these deserts are close to the sea, they are controlled by the subtropical high, so the air sinks, dries and rains, and over time, such a desert climate has formed, and the area of the desert is still expanding.

These are the reasons for the low amount of precipitation in drought, but there are other influences that indirectly contribute to the formation of deserts, one of which is the human factor.

The reason why there is so little rain in the desert is that the evaporated water actually turns into water vapor, forming dark clouds, and then drifting to other areas.

Because deserts are relatively arid, there is less water vapor in the air, making it difficult to form rainfall. The evaporated water goes to the area around the desert.

The evaporation of so much water vapor in the desert actually falls on the earth in the form of rain, but due to the high temperature in the desert area, the rain cannot be formed.

Because the specific heat capacity of sand is small, the temperature difference between day and night in the desert is relatively large, and when the temperature rises during the day, a low pressure zone will be formed around the desert, that is, the air around the desert carries less moisture, and it is difficult to form rainfall.

Because the air is dry, there is less moisture, and there is less moisture condensed in the air, and the conditions for rainfall are not reached, and they are all absorbed by the desert.

Because there are no clouds over the desert, there are no precipitation conditions, and the evaporated water leaves the desert to meet with the nearby clouds.