As the coronavirus death toll continues to rise, some have suggested that the approaching warmer spring weather in the northern hemisphere may slow or even stop the spread of the disease. US president Donald Trump echoed ...
Mar 12, 2020
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As the COVID-19 outbreak continues to expand globally, many are asking what may happen to the outbreak as winter turns to spring. Other viral respiratory diseases, such as influenza, are seasonal in that cases decrease in ...
Mar 13, 2020
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A 16 year study in more than 280 000 patients has suggested that air temperature is an external trigger for heart attack. The findings are presented today at ESC Congress.
Aug 28, 2017
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As the coronavirus spreads and fear grows, people are taking an abundance of precautions to keep from contracting it.
Mar 16, 2020
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Asthma is a condition where airways narrow and swell, possibly producing extra mucus and other symptoms. While asthma affect adults, it's the most common long-term disease in children. More than 262 million people globally ...
Jan 6, 2022
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Dehydration occurs when you use or lose more fluid than you take in, and your body doesn't have enough water and other fluids to carry out its normal functions. If you don't replace lost fluids, you will get dehydrated.
Sep 16, 2016
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After months of being cooped up thanks to cold weather and omicron, many of us are eager to hit the pavement or gym.
May 25, 2022
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"Beauty is an iron mine," once remarked the Australian mining magnate, Gina Reinhart. She was talking about a precious resource, but iron is also profoundly important to living organisms: from bacteria and fungi, to mammals ...
Jul 7, 2022
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A pair of researchers from Columbia University and Stanford University, respectively, has found that children around the world are at increased risk of health problems due to air pollution and climate change. In their paper ...
A major new study shows "concerning" levels of physical and mental health problems among farmers and agricultural workers.
Oct 12, 2022
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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
