| E Y E Mp3, E Y E Music Lyrics
| |
E Y E biography, E Y E discography
It is surrounded by the eyewall, a ring of towering thunderstorms where the most severe weather of a cyclone occurs.In strong tropical cyclones, the eye is characterized by light winds and clear skies, surrounded on all sides by a towering, symmetric eyewall.In all storms, however, the eye is the location of the storm's minimum barometric pressure: the area where the atmospheric pressure at sea level is the lowest.This is in stark contrast to conditions in the eyewall, which contains the storm's strongest winds.While normally quite symmetric, eyes can be oblong and irregular, especially in weakening storms.Both of these observations are used to estimate the intensity of tropical cyclones via Dvorak analysis.Storms with pinhole eyes are prone to large fluctuations in intensity, and provide difficulties and frustrations for forecasters.The storm develops two concentric eyewalls, or an "eye within an eye".In most cases, the outer eyewall begins to contract soon after its formation, which chokes off the inner eye and leaves a much larger but more stable eye.This may trigger another cycle of eyewall replacement.Typically, eyes are easy to spot using weather radar.This radar image of Hurricane Andrew clearly shows the eye over southern Florida.Tropical cyclones typically form from large, disorganized areas of disturbed weather in tropical regions.Consequentially, most of this built up air flows outward anticyclonically above the tropical cyclone.Outside the forming eye, the anticyclone at the upper levels of the atmosphere enhances the flow towards the center of the cyclone, pushing air towards the eyewall and causing a positive feedback loop.This causes air pressure to build even further, to the point where the weight of the air counteracts the strength of the updrafts in the center of the storm.There are many aspects of this process which remain a mystery.The formation of an eye is almost always an indicator of increasing tropical cyclone organisation and strength.Because of this, forecasters watch developing storms closely for signs of eye formation.However, for storms with a filled eye, or an eye completely covered by the central dense overcast, other detection methods must be used.Weather satellites also carry equipment for measuring atmospheric water vapor and cloud temperatures, which can be used to spot a forming eye.Since the strongest winds are located in a cyclone's eyewall, the tropical cyclone usually weakens during this phase, as the inner wall is "choked" by the outer wall.The discovery of this process was partially responsible for the end of the U.When it was discovered that this was a natural process due to hurricane dynamics, the project was quickly abandoned.Almost every intense hurricane undergoes at least one of these cycles during its existence.The moat between eyewalls is just one example of a rapid filamentation zone, or an area in the storm where the rotational speed of the air changes greatly in proportion to the distance from the storm's center.Eyewall mesovortices are most common during periods of intensification in tropical cyclones.Eyewall mesovortices are a significant factor in the formation of tornadoes after tropical cyclone landfall.Mesovortices can spawn rotation in individual thunderstorms (a mesocyclone), which leads to tornadic activity.This can allow the mesovortices to descend to the surface, causing large outbreaks of tornadoes.The stadium effect is a phenomenon observed in strong tropical cyclones.It is a fairly common event, where the clouds of the eyewall curve outward from the surface with height.An eye is always larger at the top of the storm, and smallest at the bottom of the storm because the rising air in the eyewall follows isolines of equal angular momentum, which also slope outward with height.This phenomenon refers to the characteristics of tropical cyclones with very small eyes, where the sloping phenomenon is much more pronounced.This is in addition to any storm surge which may occur, as storm surges often extend into the eye.They are then caught completely by surprise by the violent winds in the opposite eyewall.Unlike storms of tropical nature, however, they thrive in much colder temperatures and at much higher latitudes.Extratropical storms are areas of low pressure which exist at the boundary of different air masses.As such, they may have an eye, but are not true tropical storms.Subtropical storms can be very hazardous, with high winds and seas, and often evolve into true tropical storms.As such, the National Hurricane Center began including subtropical storms in their naming scheme in 2002.Both of these types of tornadoes are theorized to have calm centers, referred to by some meteorologists as "eyes".Saturn that had a clearly defined eyewall.This observation is particularly notable because eyewall clouds have not been seen on any planet other than Earth (including a failure to observe an eyewall in the Great Red Spot of Jupiter by the Galileo spacecraft).Venus are observed by the Venus Express mission of the European Space Agency to have a dipole eye structure.Atlantic Oceanographic and Meteorological Laboratory."Polygonal Eyewalls, Asymmetric Eye Contraction, and Potential Vorticity Mixing in Hurricanes".National Oceanic and Atmospheric Administration.Department of Atmospheric Science, Colorado State University."Ozone Levels Drop When Hurricanes Are Strengthening", NASA, June 8, 2005.Triple Eyewall in Hurricane Juliette.Rapid filamentation zones in intense tropical cyclones (PDF).Journal of the Atmospheric Sciences: Vol.Vortical swirls in hurricane eye clouds (PDF).An experimental study on hurricane mesovortices.Journal of the Atmospheric Sciences: Vol.Tropical Cyclone Report: Hurricane Wilma.Structure and budgets of the hurricane on October 1, 1964.The hurricane's inner core region: II.Teague, Ewa Jarosz, Mark S.National Weather Service Southern Region Headquarters (January 6, 2005).National Snow and Ice Data Center.Cappella, Chris (April 22, 2003).Oklahoma Tornado Sets Wind Record.Venus similar to those near the north pole".This page was last modified 20:38, 15 January 2008.All text is available under the terms of the GNU Free Documentation License.ADVANCED MED OPTICS (NYSE:EYE) After Hours: 19.Takeover Defense Profile: Advanced Medical Optics, Inc.FactSet TrueCourse, IncMore Reports for EYE...Featured VideoRoad to the Super BowlProvided by: G'Day USAFOX Business NowRebates for AllFOX Business NowStocks post gains despite a disappointing housing report.AMO) engages in the development manufacture, and marketing of medical devices for the eyes.To learn more about Yahoo!Quotes delayed, except where indicated otherwise.Delay times are 15 mins for NASDAQ, 20 mins for NYSE and Amex.See also delay times for other exchanges.Fundamental company data provided by Capital IQ.Financials data provided by Edgar Online.Analyst estimates data provided by Thomson Financial Network.All data povided by Thomson Financial Network is based solely upon research information provided by third party analysts.Fi Card is a wireless memory card.You can download it here.NOAH's information has been selected from a variety of consumer health resources; it is offered to you with the understanding that it not be interpreted as medical or professional advice.All medical information needs to be carefully reviewed with your health care provider.Experience the stunning views of modern London from the London Eye and then travel back in time and visit the Tutankhamun exhibition.Perrier champagne served by your host while you take in amazing views of the capital.Madame Tussauds ticket and beat the queues when you go to hang out with all the celebrities!British Airways London Eye 2008.
|
| |
|
 |
|
