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It is generally frontal rain.
Freezing rain is precipitation that consists of supercooled water droplets that freeze immediately after colliding with an object with a temperature below 0. A raindrop below 0 can remain supercooled in air with a temperature slightly below 0, and its appearance is the same as that of a normal raindrop, and when it falls on an object with a temperature below 0, it immediately freezes into a smooth, transparent layer of ice.
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Generally, frontal rain and freezing rain are generally formed by the rapid invasion of cold airflow into the warm airflow area.
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Freezing rain is composed of supercooled water droplets, which freeze immediately after colliding with objects with a temperature below zero, and is a disastrous weather seen in early winter or late winter and early spring. Raindrops below 0 can remain supercooled in air with a temperature slightly below zero, and their appearance is the same as that of ordinary raindrops, and when it falls on an object with a temperature below zero, it immediately freezes into a smooth and transparent layer of ice, which is called rime. Severe rain rime will crush trees and telephone poles, suspend communications and power supply, hinder road and railway traffic, and threaten the flight safety of aircraft.
Cold rain, cold rain. Southern Dynasty Emperor Liang Jianwen "Xuanpu Cool Poems": "The flying stream is like freezing rain, and the night moon is like autumn frost."
Tang Song Jing's "Plum Blossom Fu": "The freezing rain is wet at night, and the dream is dewed, and it is like the emperor crying in nine doubts." Song Su Shi "Traveling to the Three Caves" poem:
The freezing rain is half into snow, and the visitors are frozen and mossy and slippery. Qing Huang Jingren's poem "Years and Twilight Huairen": "Breaking the window, freezing rain, and wind, hugging the nose and chanting, the ground is red."
Mao Dun "Rainbow" 9: "The cloudy sky is sprinkled with some freezing rain that is about to turn into snowflakes at this time. The dark shadow of winter is already knocking here.
Rain, torrential rain. Frozen, 涷, "Shuowen" is originally two words, and the meaning of heavy rain should be "涷", because the two words are similar in shape and meaning, ancient books and periodicals are often "frozen". "Huainanzi Lan Yin Xun":
If it is even the Su Dynasty of Xuanyun, Yin and Yang are fighting, descending and supporting the wind, mixed freezing rain, swaying and climbing, threatening the heaven and earth, and shaking the sea. High temptation: "Freezing rain, torrential rain also."
Tang Dufu's poem "Dry Tree": "The freezing rain falls and the glue flows, and the wind wins the good air." "One book is written as "混".
Song Huang Tingjian's poem "Behind the Cliff Monument": "The cliff and the moss have been opposed for a long time, and the freezing rain is sad before washing." Qing Tang Sunhua "Joyful Rain" poem:
The mountains and clouds are rising, the freezing rain is swirling, the high and low are irrigated, and the streams and ravines are all flooding. ”
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Categories: Education, Science, >> Science, Shoubu Technology.
Problem description: What are the main types of rainfall? Its characteristics and reasons for its formation. We look forward to your answers.
Analysis: Types of rainfall.
1. Terrain rain.
Moist air currents are blocked by mountains and are forced to rise along the windward slope, the temperature decreases, and the water vapor in the air condenses and precipitation, which is called topographic rain. The air flow over the top of the mountain and down the leeward slope creates warming, drying, and in some places a hot and dry foehn wind.
Second, the rain on cherry blossoms.
Convective rain prevails in tropical and temperate summer afternoons, due to the high temperature makes evaporation vigorous, the air flow rich in water vapor rises violently, and the upper altitude expands due to decompression, and cools into clouds to cause rain, which is called convective rain. It is characterized by high intensity, short rain, small rain area, often accompanied by thunder and lightning, and short-term strong winds, also known as hot thunderstorms, thunderstorms or thundershowers.
For example, the northwest rain in the summer afternoon in Taiwan is the case.
3. Frontal rain.
When air masses with different cold and warm properties meet, their contact surface is called a front. Because warm and moist air is less dense and lighter than dry and cold air, it will climb along the front, causing water vapor to condense and rainfall, which is called frontal rain, such as the rainy season in Taiwan. Frontal rain mostly occurs in the weather system of extratropical cyclones, so it is also called cyclonic rain.
Fourth, typhoon rain.
The rainfall of tropical cyclones that occur over the tropical ocean is mainly formed by the strong convergence and upward movement of moist air over the sea, which is called the Zhiqiao Suitai wind and rain. Tropical cyclones are smaller in scope than extratropical cyclones, but they are densely cloudy and have strong airflow around the centre of the depression, bringing violent storms and rain, often causing disasters. Tropical cyclones are called typhoons in East Asia and hurricanes in the Americas.
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1. The main forms of precipitation are: frontal dusty rain, convective rain, topographic rain, and cyclone rain.
2. Frontal rain exists all year round, and it is distributed almost all over the country.
3. Convective rain should be concentrated in spring and summer, which is due to the convection of air.
4. Cyclonic rain is common with precipitation brought by tropical cyclones and extratropical cyclones.
5. Topographic rain generally only occurs on the windward slope of the mountain, and the warm and humid airflow climbs along the hillside and condenses to form precipitation.
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Freezing rain is a precipitation phenomenon.
Freezing rain is a precipitation phenomenon that occurs in a specific weather context. In layman's terms, freezing rain is when the rain falls on the ground and the attachments and freezes into ice immediately, that is to say, it is rain when it is in the sky, but it condenses into ice when it falls.
When the stronger cold air moves southward and encounters a warm and humid airflow, the cold air is inserted like a wedge below the warm air, and the temperature near the surface plummets below freezing, and the moist warm air is lifted and becomes a cloud to cause rain. When raindrops fall from the sky, a thin layer of crystal clear ice freezes on power poles, trees, vegetation and road surfaces due to the low temperature near the ground, which is called "freezing rain" in meteorology.
Some areas in the south of our country call the freezing rain "ice ling", and the northern region calls it "earth oil". When this rain falls from the sky, it is a supercooled water droplet of less than 0, and when it hits a tree branch, power line, dead grass, or other above-ground objects, it freezes into a smooth, crystal-clear layer of ice crust, sometimes freezing and dripping, like icicles. This type of ice is also known in meteorology as "rime" or ice.
Freezing rain mostly occurs in winter and early spring. Guizhou Province is the area with more freezing rain in China, followed by Hunan Province, Jiangxi Province, Hubei Province, Henan Province, Anhui Province, Jiangsu Province and Shandong Province, Hebei Province, Shaanxi Province, Gansu Province, Liaoning Province and other places, among which there are more mountainous areas than plains, and the most high mountains. When the ice formed by the rain falling from the sky accumulates to a certain extent, it is not only harmful, but also harmful.
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Rainfall levels are divided into:
Drizzle, light, moderate, heavy, torrential, heavy and extraordinarily heavy rain.
Rainfall types are divided into:
Convective rain, typhoon rain, topographic rain, frontal and limb rain.
Thunderstorm: A thundershower is a rain shower phenomenon accompanied by thunder and lightning. Occurs under thunderstorm cumulonimbus clouds. It is characterized by large-scale cloud movements, much more violent than showers, accompanied by electrical discharges, and is common in summer.
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Freezing rain is defined as a meteorological phenomenon called "freezing rain" when raindrops fall from the sky and the temperature near the ground is below 0°C.
Freezing rain is a hazard caused by the fact that roads are blocked by icy ground, which increases traffic accidents. Freezing in the field can freeze the winter wheat that has returned to green, or freeze the seedlings of crops sown in early spring. In addition, freezing rain also destroyed young forests and frostbitten fruit trees on a large scale.
After a large amount of freezing rain freezes and accumulates, it can crush the wires and lines, and severe freezing rain will collapse the house, and when the aircraft flies in the clouds with cold water droplets, the wings and propellers will accumulate water, affecting the aerodynamic performance of the aircraft and causing a crash.
The weather symbol for freezing rain is:
Frost is when the temperature of the air drops suddenly, and the surface temperature plummets below zero, causing damage to crops and even death.
The harm of frost is to freeze the water in the plant tissue cells, resulting in physiological drought, which causes damage or death, and causes huge losses to garden production. Resulting in reduced crop yields and even death.
The weather symbol for frost is:
Hail refers to the surface water that is exposed to the sun and vaporizes into the air, and the water vapor condenses into clouds, at this time the relative humidity is 100%, and when it encounters cold air, it liquefies, and the water vapor temperature drops sharply, and it will form a large ice mass.
The hazard of hail is that it brings huge losses to agriculture, construction, communications, electricity, transportation, and people's lives and property every year.
The weather symbol for hail is:
What is freezing rain.
Rain in which raindrops collide with the ground, ground objects, airplanes, etc., and freeze immediately is called freezing rain. When this rain falls from the sky, it is a supercooled water droplet below 0°C, and when it hits a tree branch, power line, dead grass or other above-ground objects, it freezes into a smooth, crystal-clear layer of ice shell, sometimes freezing and dripping, like icicles. This type of ice is also known in meteorology as "rime". >>>More
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