What is the distribution of hot deserts?

Hot deserts are mainly found around the Tropics of Cancer and Capricorn. The world’s hot deserts are located between 15° and 30° north or south of the equator, where the air is subsiding or sinking air (find out why deserts are found along the tropics here).

What is the distribution of desert?

Most of the world’s deserts are located near 30 degrees north latitude and 30 degrees south latitude, where the heated equatorial air begins to descend. The descending air is dense and begins to warm again, evaporating large amounts of water from the land surface. The resulting climate is very dry.

What is the distribution of hot deserts around the world?

Most of the world’s hot deserts lie between 20° and 35° north and south of the equator. The main temperate deserts are found in the middle latitudes.

Where are hot deserts located?

Most hot deserts are found near the Tropics of Cancer and Capricorn, between 15-30° north and south of the Equator. The largest hot desert is the Sahara in Africa which spans the whole width of the continent. Hot deserts have an extreme climate and challenging environment.

Why are deserts distributed the way they are?

Air that rises due to the intense heat at the equator divides to flow north and south. Deserts are often found towards the west of continents. … They cool the air and make it harder for the air to hold moisture.

Why are hot deserts located where they are?

It shows how air moves around the atmosphere near the equator and tropics. Some deserts are found on the western edges of continents. They are caused by cold ocean currents, which run along the coast. They cool the air and make it harder for the air to hold moisture.

What is the elevation of the desert biome?

Elevation for a hot/dry desert can vary anywhere from 1,300 feet in the Sahara or the highest at Mount Al-Nabī Shuayb with an elevation of 12,336 feet. The average elevation is around 1,000 feet.

Why are deserts near the equator?

Subtropical deserts are caused by the circulation patterns of air masses. … Hot, moist air rises into the atmosphere near the Equator. As the air rises, it cools and drops its moisture as heavy tropical rains. The resulting cooler, drier air mass moves away from the Equator.

What is the community of the desert?

Desert communities are characterized by a high fraction of ectotherms (both vertebrates and invertebrates),rodents and insectivores appear to dominate the mammalian fauna, and detritivores make up a very large part of the arthropod fauna.

Why are deserts found in western sides?

The trade winds prevail in the lower portion of the earth’s atmosphere, in the lower section of the troposphere. These winds become dry when they reach the western sides of the continents, and hence don’t bring any rain with them. As these regions become devoid of moisture, deserts are formed.

What is the temperature range of a desert?

Typical deserts have mean annual temperatures of 20-25 °C (68-77 ˚F). In hot and dry deserts highs reach around 44-50 °C (111-122 ˚F) and the soil surface becomes even hotter and can reach greater than 70 °C (158 ˚F)!

Why are deserts hot and dry?

But what makes it so hot in a desert? Deserts occur where there is a lack of moisture and thus an abundance of sunlight. With the relative lack in moisture, there is less evaporation. There are also less clouds to reflect the sunlight away.

What is the spatial distribution of the world’s deserts in relation to the tropics?

Most of the world’s deserts are found in linear patterns around the tropics, that is latitude 25°-30° N and S of the equator [1]. There is also a linear pattern along the west coast of…. Climate is the main influence for the location of the desert and the linear pattern.

Where are deserts located equator?

The world’s hot deserts are located between 15° and 30° north or south of the equator, where the air is subsiding or sinking air (find out why deserts are found along the tropics here). Air that rises due to the intense heat at the equator divides to flow north and south.

What is a hot desert environment?

A hot desert is a part of the world that has high average temperatures and very low precipitation. These areas need to have less than 250mm of rainfall per year to be classified as a desert.

Why deserts have high diurnal range of temperature?

Because desert areas receive a large amount of sunlight, the temperatures can get very high, but during the night the dry air cools quickly. The lack of cloud cover overhead allows the warmer air to rise into the atmosphere while cooler air settles in its place.

What is the elevation of the Mojave desert?

Because desert areas receive a large amount of sunlight, the temperatures can get very high, but during the night the dry air cools quickly. The lack of cloud cover overhead allows the warmer air to rise into the atmosphere while cooler air settles in its place.

How does climate influence the distribution of deserts?

The air travels in the upper atmosphere and sinks at approximately 30° north and 30° south of the Equator. When the air sinks it creates an area of high pressure. These high-pressure areas experience very dry and warm conditions resulting in a hot desert climate (eg the Sahara and Kalahari deserts).

Where do deserts form?

Geographically speaking, most deserts are found on the western sides of continents or—in the case of the Sahara, Arabian, and Gobi deserts and the smaller deserts of Asia—are located far from the coast in the Eurasian interior. They tend to occur under the eastern sides of major subtropical high-pressure cells.

How close is the desert to the equator?

Distance from the equator and elevation

– The Sahara desert is north of the equator. The southern side of the desert is located about 600 miles north from the equator. The desert also crosses the entire part of northern Africa. – The elevation of the Sahara desert can range from about 600-750m above sea level.

What populations live in the desert?

Five Populations That Could Be Found in a Desert Ecosystem

  • Black-tailed Jackrabbit. Black-tailed jackrabbits live in American desert scrub lands. …
  • Kangaroo Rat. The kangaroo rat is an American desert dweller that lives in a burrow during the day. …
  • Mountain Lion. …
  • Elf Owl. …
  • Emperor Penguin.

What is a desert landscape?

A desert is a barren area of landscape where little precipitation occurs and, consequently, living conditions are hostile for plant and animal life. The lack of vegetation exposes the unprotected surface of the ground to the processes of denudation. About one-third of the land surface of the Earth is arid or semi-arid.

What’s the population of the desert?

The total drylands population is 2.1 billion, meaning they are the home to one in three people in the world today.

Population – Homelands to a sizeable global population.

Ecosystem Total Population Share of Global Population
Desert 101,336 1.7
Semi-desert 242,780 4.1

What are hot deserts located on the western side of continents?

Thus most of the tropical deserts like The Sahara Desert, the Kalahari Desert, West Australian desert etc. are located on the western margin of the continent. Moreover, these deserts also lie on the leeward side of the mountains and hence the region is also hot and dry.

Why are major deserts hot in the northern hemisphere?

Major hot deserts in northern hemisphere are located between 20-30 degree north and on the western side of the continents. Why? The hot deserts lie along the Horse Latitudes or the Sub-Tropical High Pressure Belts where the air is descending, a condition least favorable for precipitation of any kind to take place.

Why are hot deserts located on western margins of continents Upsc?

Answer: Most of the worlds deserts are located in the western margins of continents in the subtropics because the prevailing winds in the tropics are tropical easterly winds. The tropical easterly winds become dry by the time they reach the western margins of the continents and so they bring no rainfall.

What is the temperature and precipitation for a desert?

Deserts receive less than 25 centimeters (10 inches) rainfall per year. Cold deserts have short, moist, and moderately warm summers. The winters are long and cold. The average winter temperature is between –2 and 4°C (31–39°F), the average summer temperature is between 21 and 26°C (70–79°F).

What is the highest temperature in a desert?

The Mojave Desert

In August 2020, Death Valley in the Mojave Desert in Southern California clocked the highest verified temperature by thermometer on land ever recorded: 130 degrees Fahrenheit.

What is the temperature in the desert in winter?

Winters are fairly cold in the desert. The average highest temperature is in the upper 50s Fahrenheit. The average lowest temperature is near 30 degrees Fahrenheit (though it can drop down to about 5 or 10 degrees).

What is hot desert and cold desert?

It refers to a desert with extremely hot climate. It refers to a desert with extremely cold climate. Hot deserts are found in the tropical and sub-tropical regions (western coasts of continents). Cold deserts are mostly found in temperate regions at higher latitudes. It has a sandy soil.

Why is water in short supply in the hot desert?

Causes of water shortages include swelling population, depletion of groundwater, wasteful irrigation, waste, pollution and global warming.

Why are tropical deserts so hot?

The tropical desert sky remains cloud-free due to the subsiding air of dominant high pressure resulting in large amounts of insolation. The high insolation days caused by the cloudless sky not only causes an intensive amount of energy on the land surface, but also lets much heat out at night.

What is the area of tropical desert?

In North America, the tropical deserts cover California, Arizona and Mexico states of USA. The Southern hemisphere includes the Atacama desert, the Namib and Kalahari desert and the Great Australian Desert. It has extremes of hot and cold climate . The average annual rainfall is generally less than 25 cm.

Where are deserts located in North America?

The continent’s major deserts are associated with the intermontane Basin and Range Province of the western United States, northern Mexico, and the Colorado Plateau region of northern Arizona, southwestern Colorado, northwestern New Mexico, and southeastern Utah.

Why is the desert an extreme environment?

What makes a desert an extreme environment? They are extremely dry and parts of them are thought not to have received any rainfall, or other precipitation, for at least the last two million years. Deserts result from low rainfall but they are also places of extreme temperatures and of rapid changes in temperature.

Where is biodiversity highest in hot deserts?

This is due to the high temperatures, low rainfall and a lack of available water. However, biodiversity increases close to desert water sources such as seasonal rivers and lakes and near to an oasis.

What is the temperature on a hot day in the desert?

Temperature. During the day, desert temperatures rise to an average of 38°C (a little over 100°F). At night, desert temperatures fall to an average of -3.9°C (about 25°F).

Where is maximum diurnal temperature found?

Diurnal temperature variations are greatest very near Earth’s surface. The Tibetan and Andean Plateaus present one of the largest differences in daily temperature on the planet. High desert regions typically have the greatest diurnal-temperature variations, while low-lying humid areas typically have the least.

Do deserts have high diurnal range?

Hot deserts have less than 20mm of rainfall per year and have high daytime temperatures. However due to the lack of cloud cover the night time temperatures can fall below 0°. The difference between day and night time temperature is called diurnal range, which in a desert is high.