Weather affects all of us in one way or another. For example, good weather makes us happy, bad weather makes us sick and depressed. Besides, on a fine day, we can go out for a walk or play a game in the open. On a rainy day, however, we can only stay indoors. In a word, weather is part of life for all of us.。
The weather symbol shown for each day in the five day forecast represents the predominant weather expected on the day in question. This is calculated based on a weighting of different types of weather, so if a day is forecast to be sunny with the possibility of a brief shower, then we will see a sunny or partly cloudy symbol rather than a rain cloud. The maximum temperature is the highest temperature forecast between 0600 and 1800, whereas the minimum temperature is the lowest temperature expected from 1800 on the day in question to 0600 the following day. The wind speed and direction are the expected conditions at midday.。
This is month of September, when school starts again we are stepping into Autumn.
这是九月了, 学校又开始上课,我们也踏入秋天了。
Autumn is my favourite season of the year, besides the temperature is mild,
秋天是一年中我最喜爱的季节. 除了气候温和,
the weather is dry, white clouds and blue sky, and hillsides are colourful.
天气干爽, 蓝天白云, 山中树林又多色彩。..
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Weather is always a good topic to start a conversation. In England, people's favorite topic is weather. "What a nice weather today!" Friendly people always say that. I like sunny day, it makes me feel relaxed and have a good mood. When it is cloudy, the weather is cool and comfortable. I also like rainy day, I will feel very pleased to listen to the rain. Snowy day gives people the most beautiful world. Therefore, we should cherish what we have.。
The weather is a set of all the phenomena in a given atmosphere at a given time. It also includes interactions with the hydrosphere. The term usually refers to the activity of these phenomena over short periods (hours or days). as opposed to the term climate. which refers to the average atmospheric conditions over longer periods of time. When used without qualification. "weather" is understood to be the weather of Earth.Weather most often results from temperature differences from one place to another. On large scales. temperature differences occur because areas closer to the equator receive more energy per unit area from the Sun than do regions closer to the poles. On local scales. temperature differences can occur because different surfaces (such as oceans. forests. ice sheets. or man-made objects) have differing physical characteristics such as reflectivity. roughness. or moisture content.Surface temperature differences in turn cause pressure differences. A hot surface heats the air above it and the air expands. lowering the air pressure. The resulting horizontal pressure gradient accelerates the air from high to low pressure. creating wind. and Earth's rotation then causes curvature of the flow via the Coriolis effect. The simple systems thus formed can then display emergent behaviour to produce more complex systems and thus other weather phenomena. Large scale examples include the Hadley cell while a smaller scale example would be coastal breezes.The strong temperature contrast between polar and tropical air gives rise to the jet stream. Most weather systems in the mid-latitudes are caused by instabilities of the jet stream flow (see baroclinity). Weather systems in the tropics are caused by different processes. such as monsoons or organized thunderstorm systems.Because the Earth's axis is tilted relative to its orbital plane. sunlight is incident at different angles at different times of the year. In June the Northern Hemisphere is tilted towards the sun. so at any given Northern Hemisphere latitude sunlight falls more directly on that spot than in December (see Effect of sun angle on climate). This effect causes seasons. Over thousands to hundreds of thousands of years. changes in Earth's orbital parameters affect the amount and distribution of solar energy received by the Earth and influence long-term climate (see Milankovitch cycles).On Earth. common weather phenomena include such things as wind. cloud. rain. snow. fog and dust storms. Less common events include natural disasters such as tornadoes. hurricanes and ice storms. Almost all familiar weather phenomena occur in the troposphere (the lower part of the atmosphere). Weather does occur in the stratosphere and can affect weather lower down in the troposphere. but the exact mechanisms are poorly understood.〔1〕The atmosphere is a chaotic system. so small changes to one part of the system can grow to have large effects on the system as a whole. This makes it difficult to accurately predict weather more than a few days in advance. though weather forecasters are continually working to extend this limit through the scientific study of weather. meteorology. It is theoretically impossible to make useful day-to-day predictions more than about two weeks ahead. imposing an upper limit to potential for improved prediction skill.〔1〕 Chaos theory says that the slightest variation in the motion of the ground can grow with time. This idea is sometimes called the butterfly effect. from the idea that the motions caused by the flapping wings of a butterfly eventually could produce marked changes in the state of the atmosphere. Because of this sensitivity to small changes it will never be possible to make perfect forecasts. although there still is much potential for improvement.The sun and oceans can also affect the weather of land. If the sun heats up ocean waters for a period of time. water can evaporate. Once evaporated into the air. the moisture can spread throughout nearby land. thus making it cooler.。
The weather is very nice in April, the temperature is around 15-20C,I think this is the best temperature through out the whole season. I feel very comfortable in this kind of weather. A lot of people start having outdoor activities. Young kids playing sports in the park, and also there are people taking their vacations during this time. People start putting on their nice light dresses instead of big heavy winter jackets, and waiting for the summer to come
China's climate varies from bitter cold in winter to unbearable heat in summer.
The Yangtze River serves as China's official dividing line between north and south. Given the size and varied landscape of the country, there is no one time in the year when weather is ideal in every part of China. Of course, the warmest areas in winter are to be found in the South and Southwest, such as Sichuan, Banna in Yunnan, and Hainan Island. In summer the coolest spots are in the far northeast.
China has a climate dominated by dry seasons and wet monsoons, which leads to clear temperature differences in winter and summer. In winter, northern winds coming from high latitude areas are cold and dry; in summer, southern winds from sea areas at lower latitude are warm and moist.
China climates differ from region to region because of the country's extensive and complex topography. In the south of the Nanling Mountains, rains are prolific and the temperature is high all year round. In the Yangtze and Huaihe river valleys in the central part of China, there are four distinctive seasons.
In northeast China, summer is short but there is much sunshine, while winter is long and cold. Precipitation is limited in northwest China where it is cold in winter and hot in summer. In southwest China of low latitudes, the land is elevated high, and has characteristically vertical seasonal zones
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My hometown
In my hometown ,the weather never gets too hot or too cold .
In sping ,it's warm and windy .Everyone goes out and take a walk .
In summer ,it's very hot .
In autumn ,it's also hot ,and it's a busy season .
In winter ,it's warm ,sometimes it's sainy .
I love my hometown !
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