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( Weather)
The weather is a set of all the phenomena occurring in a given atmosphere at a given time.[1] Weather phenomena lie in the hydrosphere and troposphere.[2][3] Weather refers to current activity, as opposed to the term climate, which refers to the average atmospheric conditions over longer periods of time.[4] 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 to 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&_160;°C (-40&_160;°F to 104&_160;°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.
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Weather Subcategories
Weather Articles
5 Tips for Cold Weather Arthritis Pain by Bob Alter
Arthritis treatment: 5 tips for cold weather survival 1. sufficient rest after exercise 2. keep affected areas under wraps 3. plenty of fluids to flush out toxins 4. supplement for arthritis 5. healthy art...
Hot Weather Hydration by Yuri Elkaim
With the hot weather now approaching (at least for us in the northern hemisphere) the importance of proper hydration cannot be forgotten.
As a base, you should be drinking half your weight in ounces. So if you weigh 150 lbs, then you shoul...
Arthritis - The Cold Weather Really Gets to me!! by Michelle Armstrong
I don't know about you but i find that when the weather turns cold and gloomy my arthritic symtoms seems to inflate. Im not sure if this is due to changes in temperature or air pressure but i do know ...
Brisk Walking Helps You Avoid Cold From Brisk Weather by chester ku-lea
Walking…one of the easiest and cheapest forms of exercise. No gym membership required! It’s low impact and just about anyone can do it. And if you get outside for a quick jaunt often enough, you are sure to see certain health benefits.
Wome...
Tips on Cold Weather Running by Hut Allred
Tips on Cold Weather Running by Hut Allred Your alarm goes off a 6:00 AM; you jump out of bed to get ready for your run. You look out the window and notice that it’s snowed, the thermometer says its 35 degrees Fahrenheit outside. For a fleet...
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