News tagged with weather

Related topics: nasa · satellite · climate change · tornadoes · weather patterns

Looking for ways to stay cool during heatwaves

As sunbathers enjoy this week'’s hot weather, scientists at the University of Brighton are researching ways the elderly can avoid heat-related illnesses which claim 2,000 lives in the UK each year.

Aug 26, 2016
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Stay calm and drive on—tips to manage road rage

With parents and children gearing up to go back to school, you can expect there to be more cars on the road. While traffic can be extremely irritating, it is important to keep calm and avoid a road rage situation, said a ...

Aug 17, 2016
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Does drinking hot tea in summer really cool you down?

I remember as a child, on the rare warm days that we used to get in Britain, my grandmother telling me to "have a cup of black tea … it will help cool you down". As a seven-year-old, this seemed like a crazy idea, especially ...

Jul 27, 2016
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'Heat dome' not budging until week's end

(HealthDay)—The massive "heat dome" that has blanketed the eastern United States with oppressive heat and humidity for days will not be budging before the end of the week, weather forecasters said Tuesday.

Jul 26, 2016
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Risk of heat-related health problems increases with age

Summer is here and it's blazing hot! It is important to be aware of the health risks that higher temperatures can bring. Older adults and people with chronic medical conditions are particularly susceptible to hyperthermia ...

Jul 12, 2016
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Weather

Weather is a set of all the phenomena occurring in a given atmosphere at a given time. Weather phenomena lie in the troposphere. Weather refers, generally, to day-to-day temperature and precipitation activity, whereas climate is the term for the average atmospheric conditions over longer periods of time. When used without qualification, "weather" is understood to be the weather of Earth.

Weather occurs due to density (temperature and moisture) differences between one place and another. These differences can occur due to the sun angle at any particular spot, which varies by latitude from the tropics. The strong temperature contrast between polar and tropical air gives rise to the jet stream. Weather systems in the mid-latitudes, such as extratropical cyclones, are caused by instabilities of the jet stream flow. Because the Earth's axis is tilted relative to its orbital plane, sunlight is incident at different angles at different times of the year. On Earth's surface, temperatures usually range ±40 °C (100 °F to −40 °F) annually. Over thousands to hundreds of thousands of years, changes in Earth's orbit affect the amount and distribution of solar energy received by the Earth and influence long-term climate

Surface temperature differences in turn cause pressure differences. Higher altitudes are cooler than lower altitudes due to differences in compressional heating. Weather forecasting is the application of science and technology to predict the state of the atmosphere for a future time and a given location. 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. Human attempts to control the weather have occurred throughout human history, and there is evidence that human activity such as agriculture and industry has inadvertently modified weather patterns.

Studying how the weather works on other planets has been helpful in understanding how weather works on Earth. A famous landmark in the Solar System, Jupiter's Great Red Spot, is an anticyclonic storm known to have existed for at least 300 years. However, weather is not limited to planetary bodies. A star's corona is constantly being lost to space, creating what is essentially a very thin atmosphere throughout the Solar System. The movement of mass ejected from the Sun is known as the solar wind.

This text uses material from Wikipedia, licensed under CC BY-SA

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