Why is it so hot inside the desert and why is the desert so hot in the morning? So cool at night?

There are no clouds over the desert, the atmosphere is clean, and the solar radiation is less weakened and the radiation is strong.

The desert is covered with little vegetation, and the solar radiation reaches the ground without reservation.

Sand conducts heat quickly, so the temperature is high during the day.

At night, too, because the atmosphere is clean, the temperature radiated from the ground is not blocked by clouds, and it shoots directly into the universe.

The specific heat capacity of the sand is small, and the heat loss is also fast. So the temperature is low at night, and the temperature difference between day and night is large.

in everyday life. Clouds are very common, clouds play a very large role in nature, and deserts are hot during the day and cold at night, which are related to two of these effects: one is to weaken the radiation of sunlight to the ground through reflection, and the other is to transfer heat to the ground through reverse radiation.

That is, to insulate the ground. Desert areas are extremely arid and do not evaporate much water vapor, so there are very few clouds over the desert. During the day, the sun scorches the desert unobstructed, and the specific heat capacity of the sand is larger, causing the temperature to rise sharply, so the desert is hot during the day;

Because most of them are located near the equator, they are geographically tropical, with strong sunlight and little precipitation, and of course it is hot.

This is mainly due to the fact that the cloudless drought is controlled by the subtropical high.

There are no clouds during the day to weaken solar radiation, causing solar radiation to radiate directly to the ground, causing the temperature of the earth to rise.

There is no atmospheric reverse radiation at night to increase the temperature of the ground, resulting in low ground temperatures!

Because the surface of the earth is dry and there is no water, the specific heat capacity of water is the largest, and the place where there is water does not feel so hot.

It's not because it's hot because of the desert.

It's because of the heat that the desert is formed.

Because the sun is strong in the desert, there is no water.

The hottest desert in the world:

1. Lut Desert.

The 51,800 square kilometers of eastern Iran is generally the hottest place on Earth in any year.

In 2005, when NASA satellites measured, temperatures there peaked at degrees Celsius.

2. The Sahara Desert.

The Sahara Desert is the largest hot desert in the world – it covers 9,200,000 square kilometers of North Africa! During the hottest period of the year, most of the Sahara desert averages between 38 and 40 degrees Celsius.

3. Flaming Mountain.

On the northern edge of the Taklamakan Desert in northwestern China lies the Flaming Mountains, a 100-kilometer-long chain of red sandstone mountains that have been eroded into the shape of flames.

Not only does the flaming mountain seem to be burning, but the temperature in the hot season is also very high: in 2008, NASA satellites recorded a high temperature of Celsius on Earth here.

4. Mojave Desert.

In August 2020, Death Valley in the Mojave Desert in Southern California recorded the highest temperature verified by a thermometer on land: 130 degrees Fahrenheit. The 124,000 square kilometres of the Mojave Desert regularly break temperature records.

5. Atacama Desert.

While the 104,741 square kilometers of the Atacama Desert in Chile and Peru are a very hot desert, with daytime temperatures hovering around 40 degrees Celsius during the hot season, some parts of the world can get hotter.

However, there is no drier hot desert than the Atacama Desert, which averages only about centimeters of rain per year, while some years have no rain at all.

There are two main reasons: first, the desert has a small heat capacity, and it absorbs heat quickly and heats up quickly during the day; At night, it heats up quickly and cools down quickly. Second, there are few clouds in the desert, and the sun can scorch the desert unobstructed during the day, and the temperature rises sharply; At night, inverse radiation is almost non-existent, does not play a role in heat preservation, and the temperature continues to drop.

When it comes to the desert, many people will immediately think of Xinjiang, and there is a popular proverb in Xinjiang, "Wear a cotton jacket in the morning and yarn in the afternoon, and eat watermelon around the stove", from this proverb, you can feel how big the temperature difference between morning and evening in the desert of Xinjiang is. Every time the desert is mentioned, everyone's inherent impression is that in addition to drought and lack of rain, there is a huge temperature difference between day and night in the desert area. The desert is still steaming during the day, but once it reaches night, it cools down rapidly, and the heat of the day is gone.

The large temperature difference between day and night in the desert has also become a "roadblock" for many explorers to challenge their limits.

First of all, the phenomenon of hot during the day and cold at night in the desert is inseparable from the sand and rocks in the desert. Because the specific heat of sand and gravel is smaller than that of air, when the earth's surface absorbs the sun's radiant heat during the day, the temperature of the air near the ground is higher than that of the air of equal mass, and the heat transfer is transferred from sand and gravel to the air. At the same time, because the specific heat of sand and gravel is small, the heat absorption of sand and gravel rises rapidly, so that the air near the ground also heats up rapidly (air convection, which makes the air in the desert area heat up rapidly); At night, the earth's surface radiates heat to the air, and the air is convection, and the sand and gravel exchange heat with the cold air near the ground, and the sand and gravel are transferred to the air into cooling.

This phenomenon is evident in some parts of China's Xinjiang. Because the local ground landscape is mainly desert and the heat capacity is small, it absorbs heat quickly and heats up quickly during the day; At night, it is fast to heat out and cool down quickly.

There are also meteorological factors that cause the desert to be hot during the day and cold at night. In our daily lives, the cloud is very common. It is a visible polymer floating in the air composed of small water droplets or small Xiaoice crystals condensed by the liquefaction of water vapor in the atmosphere when cold.

In nature, clouds have a role that cannot be ignored, for example, clouds can both "shade" and "keep warm". In other words, clouds can weaken the radiation of sunlight to the ground through reflection, and can also transfer heat to the ground through reverse radiation, that is, to keep the ground warm. However, the desert area is extremely arid and does not evaporate much water vapor, so there are very few clouds over the desert.

During the day, the sun can scorch the desert unobstructed, causing the temperature to rise sharply, so the desert is hot during the day; When night falls, the sun sets in the west, the ground radiation becomes dominant, and the ground continuously releases heat into the air, but there are few clouds over the desert, and the reverse radiation almost does not exist, so it does not play a role in heat preservation, so the temperature continues to drop, so the desert is cold at night.

First of all, the phenomenon of hot during the day and cold at night in the desert is inseparable from the sand in the desert. Since the specific heat of sand and gravel is less than that of air, when the earth's surface absorbs solar radiation heat during the day, the temperature of the same mass of sand and gravel is higher than the temperature of the air near the ground, and the heat is transferred from the sand to the air. At the same time, since the specific heat of the sand is small, the sand absorbs the heat and heats up quickly, which makes the air near the ground also heat up quickly; At night, the earth's surface dissipates heat to the air, air convection, and sand and stones exchange heat with cold air near the ground, and sand and stones are transferred to the air for cooling.

This phenomenon is evident in some parts of Xinjiang, China. Since the local surface landscape is mainly a desert with a small heat capacity, it absorbs heat quickly and heats up quickly during the day. At night, it quickly releases heat and cools down quickly.

This is also the reason why the proverb "wear a cotton jacket in the morning, gauze at noon, and eat watermelon around the stove" is popular in Xinjiang. Due to meteorological factors, the desert is hot during the day and cold at night. The cloud is common in our daily lives.

It is a visible polymer floating in the air and is made up of small water droplets or Xiaoice Xiaoice crystals that are formed by the condensation of water vapor from the atmosphere when cold. In nature, clouds play an important role. For example, clouds can "block out the sun" and "keep warm".

In other words, clouds can weaken the radiation of sunlight to the ground through reflection, or they can transfer heat to the ground through reverse radiation, i.e., keep the ground warm. However, desert areas are very dry and there is not much water vapor evaporated, so there are almost no clouds above the desert. During the day, the sun can bake the desert without hindrance, causing the temperature to rise sharply, so the desert is hot during the day.

When night falls, the sun sets in the west, and ground radiation dominates. The ground is constantly releasing heat into the air. However, the desert has almost no clouds and inverse radiation is almost non-existent, so it cannot keep warm.

As a result, the temperature continues to drop and the desert gets colder at night.

It is mainly caused by two reasons: first, the desert has a small heat capacity, and it absorbs heat quickly and warms up quickly during the day; At night, it heats up quickly and cools down quickly. Second, there are few desert clouds, and the sunlight can scorch the desert unobstructed during the day, and the temperature rises sharply; At night, inverse radiation is almost non-existent, does not play a role in heat preservation, and the temperature continues to drop.

During the day, when the sun is very strong, the sand accumulates a lot of heat, because his specific heat capacity is small, so his temperature rises a lot, so the desert is very hot during the day. But at night, as the temperature drops, the sand will quickly release its heat, and then the temperature will drop quickly.

Why is the desert hot in the morning and cold at night?

I think it's possible that because of the sand, there is the sun during the day, while the desert only has sand, and the sand absorbs the temperature of the sun and emits it out, and there is no cooling of water, so it is very hot during the day.

At night, when there is no sun, the sand will quickly disperse the temperature, so I think it will feel cold at night.

Hello, because of the difference between morning and evening, temperature humidity and demeanor of these problems.

Sand conducts heat quickly, but it can't store heat, so the sun is exposed to the sun and heats up quickly, but it can't retain heat. Without the sun, the heat dissipates quickly and cools down quickly.

Every time the desert is mentioned, everyone has an inherent impression that apart from drought and little rainfall, there is a large temperature difference between day and night in desert areas. During the day, it's still a hot desert. Once it is at night, it will cool down quickly, and the large temperature difference between day and night in the desert has become a "roadblock" for many explorers to challenge their limits.

So, what's the secret behind the phenomenon of hot during the day and cold at night in the desert? First of all, the phenomenon of the desert being hot during the day and cold at night.

When we think of deserts, it's natural to think of heat, aridity, barren land, and lifeless life, but they are much more than that, and in some ways life in the desert is quite abundant.

Deserts cover 20% of the Earth's surface, and since most of the world's land mass is located in the Northern Hemisphere, most of the deserts are also located in the Northern Hemisphere compared to the Southern Hemisphere. Deserts are not scattered randomly on the earth, but are mainly located in two discontinuous zones in the windless zone of the Tropic of Capricorn.

In fact, the desert is not only hot, it can also be cold. The Sahara Desert is the largest desert in the world, and the largest "hot" desert, while Antarctica is the largest "cold" desert in the world.

Do you know why the desert is so hot and dry?

When substances come into contact with heat, their temperature increases, but different types of substances react differently to heat. We all know that deserts have less water and more sand, and sand and rocks heat up faster than water. What is involved is the specific heat capacity, which is the amount of heat that must be applied to raise the temperature of a substance by 1 degree Celsius.

The specific heat capacity of water is, while the specific heat capacity of sand and other rocks is. So, you can imagine how fast the desert is heating up compared to any large body of water around it.

On the other hand, the reason why the desert is so hot is also due to the lack of water. When the sun shines on the ground, all the absorbed sunlight is used to raise the temperature of the ground. If there is moisture in the soil, most of the heat is used to evaporate the water, which keeps the ground at a lower temperature.

Due to the lack of water in the desert, the evaporation process is reduced. Due to the lack of evaporative cooling processes, the lack of vegetation to take advantage of sunlight, and the lack of clouds that reflect sunlight, most of the sunlight is used to heat the surface.

How does the desert get cold at night?

No matter how hot the day is, the temperature in the desert usually plummets at night. This is a very striking change. This is because sand and rocks lose heat very quickly.

In other words, the desert is hot when there is sun during the day, but once the sun starts to set, the desert area quickly loses heat and gets cold at night.

Due to the harsh environment of the desert, we humans rarely set foot in it, and occasional trips can also allow people to experience unique exotic customs. After all, the miracles of nature never disappoint.

In general, the summers in the desert can be very hot and the temperatures can be very high. However, not all deserts are hot all year round. Some deserts are not inThe tropicsWinters can still be cold there, such as in China's largest desertTaklamakan Desert, it is very cold in winter.

1. Climatic characteristics of the desertA desert is an area where the surface of the earth is completely covered by sand, plants are scarce, rain is scarce, and the air is dry. Deserts are generally barren and only a few plants survive, such as cacti. Desert areas have a dry climate with scarce rainfall.

In some extreme desert areas, annual precipitation can reach less than 10 mm. In desert areas, the climate changes greatly, with an average annual temperature difference of more than 30 degrees, sometimes scorching at noon, and sometimes below 10 degrees at night.

2. Characteristics of the distribution of deserts in the worldThe world's most extensive deserts are distributed in the middle and low latitudes of the north and south, mainly in the central part of Asia, the western United States, and Africa. The more famous deserts areSahara Desert, Tengger Desert, Taklamakan Desert,Atacama Desert。These deserts are vast, sparsely populated, and receive very little rainfall, where only a few creatures live.

3. China's largest desert - the Taklamakan DesertThe largest desert in China is the Taklamakan Desert in Xinjiang. This desert is a warm temperate arid desert that can reach more than 60 degrees Celsius during the day in summer.

The high temperature is only 20 degrees Celsius at night, and the temperature difference between day and night can reach more than 40 degrees Celsius. It is colder in winter, with an average temperature of around -10 degrees Celsius in January. In the Taklamakan Desert, more than 80% of the sand dunes are mobile, and plants such as cacti and sea buckthorn live.

So, not all deserts are necessarily hot, the temperature is very high, and the deserts in the mid-latitudes are still very cold at night or in winter.