Tussan city of Korea. Everything you need to know about tucson arizona. How to apply sunscreen while swimming

Tucson is located in southern Arizona, close to the Mexican border. The population of the city is about half a million people.

The territory of the city has already been mastered by people several millennia ago. The presence of Europeans in the structure of the city was not felt in this area until the eighteenth century. The city's famous nickname is "Old Pueblo".

The economic component of the region and development is directly related to the higher educational institution of Arizona. The Arizona Institute has 40,000 students and is the largest educational institution in the state. The institute is one of the largest employers in the region.

A significant role in the urban economy lies with high-tech products, including military paraphernalia. Tourism is remarkably developed in the city district, because annually, more than three million people visit it.

The Southeast Territory of Tucson is used as a high-tech cluster. Many large corporations and companies are based in this area. For example, Raytheon Corporation is the largest manufacturer of radio-controlled rockets. This firm is considered the main employer in the region.

The climate of the region

The main problem in the city is the lack of water resources. Across the perimeter of the city is the Santa Cruz river system, but it does not satisfy all needs. This is because the river becomes shallow due to the hot climate. The filling of the river bed with water masses occurs only in the season of heavy rains (monsoons).

Tucson is located in the famous Sonoran Desert. The urban area is surrounded by mountains. Interesting is the fact that, despite the desert and lifeless zone, the landscape is very diverse. Under the clear sky of the desert area, you can see: hilly heights, dry channels of river systems, huge canyons, vegetation.

Climatic conditions, as you can already understand - desert. Summer time here is long and hot. The temperature of the air masses is slightly lower than in. This is due to the fact that the city area is located at an altitude of several hundred meters above the sea. On a summer day, the air temperature can rise to 38 degrees Celsius. At night, the temperature drops slightly and drops only to values ​​​​of 20-25 degrees. Extremely high temperatures (above 30 degrees) can also occur in October. The season of heavy rains is observed in the last two summer months. During the winter months, daily temperatures can reach 15-18 degrees Celsius. During this period, precipitation sometimes occurs in the form of snow, which instantly melts.

Tucson city on USA map

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Tucson is the second largest city in Arizona, located in the south of the state, 180 km south of Phoenix (the state capital) and 100 km north of the border with Mexico. The population of Tucson in 2014 is estimated at 527 thousand people. The population of the urban agglomeration (Tucson and the suburbs) is approximately 1 million people.

It is believed that the territory of present-day Tucson was inhabited by people already 10 thousand years ago. The presence of Europeans was minimal until the end of the 18th century. In 1821, Tucson became part of Mexico, and in 1853 was annexed to the United States. By 1900, the population of Tucson was only 8 thousand people. The city's nickname is "The Old Pueblo".

The racial composition of the population for 2013:

• white - 45.0%
• Hispanics (of any race) - 42.3%
• African Americans - 4.9%
• Asians - 3.0%
• mixed race - 2.5%
• Indians - 2.0%

Socio-economic indicators for 2013:

• average income per person - $19669
• average cost of a house - $125,100
• average cost of renting a house - $745
• population living below the poverty line - 25.3%
• unemployment in the region (as of June 2014) - 7.3%
• cost of living index - 89.2 (US average - 100)

The economy and development of Tucson is largely associated with the University of Arizona (University of Arizona) - the largest educational institution in the state, which has about 40,000 students. The university is currently the second largest employer in the city.

An important role in the local economy is played by high-tech industries, including the military. Tourism is well developed, about 3.5 million tourists visit the city every year.

On the southeast side of Tucson along I-10 is the Tucson Tech Corridor, home to about 150 businesses. Raytheon is the world's largest manufacturer of guided missiles and Tucson's largest employer.

Pictured is the Raytheon Missile Systems industrial complex.

One of the main urban problems is the lack of water. The Santa Cruz River flows through the city. Previously, it was full-flowing and was the main source of water, but over time it dried up. Its channel is filled with water only during the rainy season (monsoon season).

Tucson is located in the Sonoran Desert and is surrounded on all sides by mountain ranges. The landscape is surprisingly varied for a desert: hills, dry riverbeds, rocky canyons, cacti, plants, all under clear blue skies.

Saguero National Park near Tucson

The climate in the region is desert with long and hot summers. Due to its location at an altitude of 800 meters above sea level, the air temperature here is slightly lower than in Phoenix. Daytime temperatures in summer days exceed 35-38 C, at night temperatures drop to 20-28 C. Temperatures up to 35 C can be observed even in early October. From July to August, Tucson experiences the monsoon season. In winter, daytime temperatures can reach 15-20 C. At the same time, frosts are observed in a separate period and even snow falls, which quickly melts.

Welcome to the United States of America!

Full title: Tucson
State:
Year of foundation: 1768
Population (with surroundings): 1030 thousand people
Square: 505 sq. km.

Tucson (also known as Tucson) is a major city and the county seat of Pima County. It is considered one of the fastest growing. At the moment, the population of Tucson has half a million inhabitants and it ranks second in size in the state, second only to.

The city is located in the south of Arizona, on the territory of a large oasis in the valley of the Santa Cruz River, surrounded by a semi-desert plateau. One hundred and eighty-eight kilometers from Tucson is the city of Phoenix. Currently, the city is experiencing a shortage of water resources.

Tucson Photos

About two hundred and eighty millimeters of precipitation falls annually in the vicinity of the city. It usually rains here either in summer or in winter and does not last long. The summer rainy season is called Mansun. During it, small storms and strong gusty winds, especially in the afternoon. Snow in these parts is extremely rare and melts very quickly - this is due to the fact that the city is located in the valley of the Sonoran Desert. However, there is enough snow in the mountains even for regular skiing.

Due to the low percentage of humidity in the air and the constant light breeze, the heat in Tucson is a little easier to endure in the summer.

The city is a center for the production of radio electronics, aircraft assembly and production of guided missiles. Tucson is sometimes called the "Valley of Optics" (a kind of analogue of Silicon Valley) - this is due to the fact that optoelectronics and optical devices are produced in large quantities here.

In the mountainous areas in the vicinity of Tucson, copper ore is mined, which is processed at the enterprises of the city. The University of Arizona is also located in Tucson. The city is a major transport hub for pastures, irrigated agriculture and mining.

Tourists in these parts are attracted primarily by a number of well-preserved buildings of Spanish architecture. Located in Tucson and a large number of museums, including the Museum of the Arizona Historical Society, the Art Museum (it is widely represented by Latin American art) and the State Museum.

The restored historic quarter, which was once part of the Spanish fort, is located in the heart of Tucson. National natural monument "Saguaro" - "cactus forest" - attracts tourists from all over the country and is located northwest of the city. Not far from Tucson there is also a climatic resort, which treats diseases of the respiratory system.

The Kitt Peak Astronomical Observatory, located on Mount Kitt Peak, is only seventy-two kilometers from the city.

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The sun is the source of life on the planet. Its rays give the necessary light and warmth. At the same time, ultraviolet radiation from the Sun is detrimental to all living things. To find a compromise between the beneficial and harmful properties of the Sun, meteorologists calculate the ultraviolet radiation index, which characterizes the degree of its danger.

What UV radiation from the sun is

The ultraviolet radiation of the Sun has a wide range and is divided into three regions, two of which reach the Earth.

• UV-A. Longwave radiation range
  315–400 nm

  The rays pass almost freely through all atmospheric "barriers" and reach the Earth.

• UVB. Medium wave radiation range
  280–315 nm

  The rays are 90% absorbed by the ozone layer, carbon dioxide and water vapor.

• UVC. Shortwave radiation range
  100–280 nm

  The most dangerous area. They are completely absorbed by stratospheric ozone without reaching the Earth.

The more ozone, clouds and aerosols in the atmosphere, the less the harmful effect of the sun. However, these saving factors have a high natural variability. The annual maximum of stratospheric ozone occurs in spring, and the minimum - in autumn. Cloud cover is one of the most variable weather characteristics. The content of carbon dioxide also changes all the time.

At what values ​​of the UV index is there a danger

The UV index gives an estimate of the amount of UV radiation from the Sun on the Earth's surface. UV index values ​​range from safe 0 to extreme 11+.

• 0–2 Low
• 3–5 Moderate
• 6–7 High
• 8–10 Very high
• 11+ Extreme

In mid-latitudes, the UV index approaches unsafe values ​​(6–7) only at the maximum height of the Sun above the horizon (occurs in late June - early July). At the equator, during the year, the UV index reaches 9...11+ points.

What is the benefit of the sun

In small doses, UV radiation from the Sun is essential. The sun's rays synthesize melanin, serotonin, vitamin D, necessary for our health, and prevent rickets.

Melanin creates a kind of protective barrier for skin cells from the harmful effects of the sun. Because of it, our skin darkens and becomes more elastic.

Happiness hormone serotonin affects our well-being: it improves mood and increases overall vitality.

Vitamin D strengthens the immune system, stabilizes blood pressure and performs anti-rickets functions.

Why is the sun dangerous?

When sunbathing, it is important to understand that the line between beneficial and harmful Sun is very thin. Excessive sunburn always borders on a burn. UV radiation damages DNA in skin cells.

The body's defense system cannot cope with such an aggressive impact. This lowers the immune system, damages the retina, causes skin aging and can lead to cancer.

Ultraviolet destroys the DNA strand

How does the sun affect people?

Susceptibility to UV radiation depends on skin type. The most sensitive to the Sun are people of the European race - for them, protection is required already at an index of 3, and 6 is considered dangerous.

At the same time, for Indonesians and African Americans, this threshold is 6 and 8, respectively.

Who is affected the most by the Sun?

people with light
skin tone

People with many moles

Residents of the middle latitudes while relaxing in the south

winter lovers
fishing

Skiers and climbers

People with a family history of skin cancer

In what weather is the sun most dangerous

The fact that the Sun is dangerous only in hot and clear weather is a common misconception. You can also get burned in cool cloudy weather.

Cloudiness, no matter how dense it may be, does not at all reduce the amount of ultraviolet to zero. In mid-latitudes, cloud cover significantly reduces the risk of sunburn, which cannot be said about traditional beach holiday destinations. For example, in the tropics, if in sunny weather you can get burned in 30 minutes, then in cloudy weather - in a couple of hours.

How to protect yourself from the sun

To protect yourself from harmful rays, follow these simple rules:

Get less exposure to the Sun during the midday hours

Wear light-colored clothing, including wide-brimmed hats

Use protective creams

Wear sunglasses

Stay in the shade more on the beach

Which sunscreen to choose

Sunscreen varies in terms of sun protection and is labeled from 2 to 50+. The numbers indicate the proportion of solar radiation that overcomes the protection of the cream and reaches the skin.

For example, when applying a cream labeled 15, only 1/15 (or 7%) of the UV rays will penetrate the protective film. In the case of cream 50, only 1/50, or 2%, affects the skin.

Sunscreen creates a reflective layer on the body. However, it is important to understand that no cream is capable of reflecting 100% of ultraviolet light.

For everyday use, when the time spent under the Sun does not exceed half an hour, a cream with protection 15 is quite suitable. For tanning on the beach, it is better to take 30 and above. However, for fair-skinned people, it is recommended to use a cream labeled 50+.

How to apply sunscreen

The cream should be applied evenly to all exposed skin, including the face, ears and neck. If you plan to sunbathe for a long time, then the cream should be applied twice: 30 minutes before going out and, additionally, before going to the beach.

Please refer to the cream instructions for how much to apply.

How to apply sunscreen while swimming

Sunscreen should be applied every time after bathing. Water washes away the protective film and, reflecting the sun's rays, increases the dose of ultraviolet radiation received. Thus, when bathing, the risk of burning increases. However, due to the cooling effect, you may not feel the burn.

Excessive sweating and rubbing with a towel is also a reason to re-protect the skin.

It should be remembered that on the beach, even under an umbrella, the shade does not provide full protection. Sand, water, and even grass reflect up to 20% of UV rays, increasing their impact on the skin.

How to protect your eyes

Sunlight reflecting off water, snow, or sand can cause painful retinal burns. Use sunglasses with an ultraviolet filter to protect your eyes.

Danger for skiers and climbers

In the mountains, the atmospheric "filter" is thinner. For every 100 meters of altitude, the UV index increases by 5%.

Snow reflects up to 85% of UV rays. In addition, up to 80% of the ultraviolet reflected by the snow cover is again reflected by the clouds.

Thus, in the mountains, the Sun is most dangerous. Protecting the face, lower part of the chin and ears is necessary even in cloudy weather.

How to deal with sunburn if you are burned

Treat the body with a damp sponge to wet the burn

Lubricate the burnt areas with anti-burn cream

If the temperature rises, consult a doctor, you may be advised to take an antipyretic

If the burn is severe (skin is very swollen and blisters), seek medical attention.

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