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From Wiktionary under the GNU Free Documentation License. Weather is the state of the atmosphere as measured on a scale of hot or cold, wet or dry, calm or storm, clear or cloudy. Most weather phenomena occur in the troposphere, just below the stratosphere. 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 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. Part of the Nature series on Weather Seasons Spring · Summer Tropical StormsThunderstorm · Supercell Downburst · Lightning Tornado · Waterspout Tropical cyclone (Hurricane) Extratropical cyclone Winter storm · Blizzard · Ice storm Dust storm · Firestorm · Cloud PrecipitationDrizzle · Rain · Snow · Graupel Freezing rain · Ice pellets · Hail TopicsMeteorology · Climate Weather forecasting Heat wave · Air pollution Weather PortalFrom Wikipedia under the
GNU Free Documentation License WEATHEr!!!!!!!!!? Q. OMG...It is thunder and lightening here..it is really scary..All I can hear is big roars...rain...and see lightening..We never get it here and this is like the first time we have had it this bad!!! I live in Or. and I can like see the lighteneing, it is so close to the ground! Any advice how to not freak out, I am worried for my well not my real sis but ne ways she is driving in this!! I stood outside for 30 sec. okay maybe a minute, and I am soaked from head to toes, and I was rolling up the car window! Asked by Ashlee J - Sat May 24 19:36:38 2008 - - 2 Answers - 0 Comments A. When I was a kid my mom told me that thuder was Angels playing bowling and anytime they got a strike lighting was to celebrate. It made me feel better because I would jump up and down and cheer when lightning would strike and know it is still cool to like of it that way. Or if you've every read twilight it is just a bunch of Vampiers playing baseball. =) Good luck. Answered by Sarah - Sat May 24 19:45:56 2008 How does weather radar operating in the reflectivity mode locate and plot the motion of areas of precipitation? Q. How does weather radar operating in the reflectivity mode locate and plot the motion of areas of precipitation? Asked by kyle c - Tue Nov 3 17:32:13 2009 - - 1 Answers - 0 Comments A. Moisture dense enough to form precipitation cells in the atmosphere simply reflects more electromagnetic energy back to the radar antenna than clear air. The computer in the radar set is designed to make a number of measures and calculations from which it is able to derive the location, distance, and speed of motion of the target rain cells by applying geometry, trigonometry, algebra, etc., to known physical constants. Science marches on! Answered by Ron971 - Tue Nov 3 22:02:48 2009 What will the weather be like in Buenos Aires, Argentina during the months of June and July?
Q. I'll be spending two months in Buenos Aires. Can anyone tell me what the weather is like? How cold does Buenos Aires' winters compare to California's? What should I pack for the trip? Thanks in advance! Asked by alya - Tue Jan 20 22:16:27 2009 - - 5 Answers - 0 Comments A. It is not as cold as most nothern cities of US. Lowest I have lived there has been around 22F. Lots of rain and wind. Pack a big jacket, lots of sweaters, jeans, pants, gloves and a scarf you will be fine. And don't forget an umbrella. Answered by I Argentina - Wed Jan 21 19:13:49 2009 From Yahoo Answer Search: "Weather"
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 bloomberg.com Fri, 23 Jul 2010 16:19:39 GMT+00:00 May Aid Crops Bloomberg Precipitation in parts of the eastern Midwest and South will relieve dry areas, said Allen Motew, a meteorologist at QT Weather in Chicago. ...  consults.blogs.nytimes.com Thu, 22 Jul 2010 16:10:49 GMT+00:00 Makes Migraines Worse New York Times (blog) Many of the migraine sufferers who recently wrote in to the Consults blog noted that summertime heat or shifts in weather can trigger migraine attacks. ...  philly.com Sun, 25 Jul 2010 07:03:10 GMT+00:00 Philadelphia Inquirer The National Weather Service extended its excessive-heat warning until 6 am Sunday. Later in the day, "there is a cold front coming," said Ray Kruzdlo, ... From Google News Search: "Weather"  mk23.image.pbase.com 600px x 800px | 127.70kB [source page] PICT0034 jpg http mishuna image pbase com u36 merriwolf upload 34457020 AlgonquinParkSunrise5980 jpg http mk29 image pbase com u34 pharmangie upload 31283958 2004 07 12 tornado jpg http mk23 image pbase com u47 deekuijer upload 30323587 weather jpg http jja image pbase com u44 puck upload 36038008 PICT0366 jpg A1 http mishopi image pbase com u34  growabrain.typepad.com 178px x 230px | 9.40kB [source page] March 18 2006 Bad Weather Axis of Evil Weather Know the weather before you preempt Cold weather somewhere  elekhni.com 620px x 458px | 64.60kB [source page] more bearable than minus 23C But when the temperature goes into the minus 30 levels it doesn t much matter which measure you use anyway This is what my forecast looked like a month ago Just a few days back the temperature was in the minus 10 F range so it s not surprising I find 30 degrees the height of warmth I might even go so far as to call it a little hot From Yahoo Image Search: "Weather"  shetlandtimes.co.uk Shetland Times Fri, 23 Jul 2010 10:20:40 GM WEATHER. outlook for shetland friday, 23 July 2010 at 11:05 headlines today: fine tonight: DRY, cool tomorrow: outbreaks of light rain days 2-5: some rain then fair days 6-10: FAIR.  mississauga.com unknown Fri, 23 Jul 2010 07:00:00 GM It doesn't appear Mississauga residents will get a break from the hot, sticky, humid . weather. until at least Sunday. Because of the heat and humidity, lingering thunderstorms are predicted today and tomorrow. ...  jdavidconnect.typepad.com Joel Fri, 23 Jul 2010 20:07:26 GM NOAA's National . Weather. Service SPC Day 1, 2, 3 and 4-8 Convective Outlooks Update SPC Jul 23, 2010 2000 UTC Day 1 Convective OutlookFri, 23 Jul 2010 15:03:46 -0500 DAY 1 convective outlook nws storm prediction center norman ok 0300 PM ... From Google Blog Search: "Weather" |
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