Hypercane: Difference between revisions
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==Physical description== | ==Physical description== | ||
Hypercanes would have wind speeds of over {{convert|800|km/h|mph}}, and would also have a central pressure of less than {{convert|700|hPa|inHg|abbr=off|lk=on}}, giving them an enormous lifespan.<ref name="MIT" /> The extreme conditions needed to create such a storm could conceivably produce a system up to the size of [[North America]], creating [[storm surge]]s of {{convert|18|m|ft|abbr=off|lk=off}} and an eye nearly {{convert|300|km|mi|abbr=off|lk=off}} across. The waters could remain hot enough for weeks, allowing more hypercanes to be formed. A hypercane's clouds would reach {{convert|30|km|mi}} into the [[stratosphere]]. A hypercane would also damage the earth's [[ozone]].<ref name="MIT" /> The reason for this is the water molecules sent up into the [[ozone]] layer merge with the [[ultraviolet light]] repelling particles and disintegrate the particles, creating a hole in the vicinity. Other scientists have theorized that the system, compared to a normal [[hurricane]], would be considerably smaller, about 10 miles in diameter. This would more comparable to a [[tornado]], which can top out to about a mile and a half in diameter. | Hypercanes would have wind speeds of over {{convert|800|km/h|mph}}, and would also have a central pressure of less than {{convert|700|hPa|inHg|abbr=off|lk=on}}, giving them an enormous lifespan.<ref name="MIT" /> The extreme conditions needed to create such a storm could conceivably produce a system up to the size of [[North America]], creating [[storm surge]]s of {{convert|18|m|ft|abbr=off|lk=off}} and an eye nearly {{convert|300|km|mi|abbr=off|lk=off}} across. The waters could remain hot enough for weeks, allowing more hypercanes to be formed. A hypercane's clouds would reach {{convert|30|km|mi}} into the [[stratosphere]]. A hypercane would also damage the earth's [[ozone]].<ref name="MIT" /> The reason for this is the water molecules sent up into the [[ozone]] layer merge with the [[ultraviolet light]] repelling particles and disintegrate the particles, creating a hole in the vicinity. Other scientists have theorized that the system, compared to a normal [[hurricane]], would be considerably smaller, about 10 miles in diameter. This would more comparable to a [[tornado]], which can top out to about a mile and a half in diameter. | ||
==Contraversy== | |||
As many theories circulate about the demise of the [[dinosaurs]], only one holds true. The most popular, however, is that a meteor, spanning the size of [[North America]], struck mid land pre continental drift. The impact drove debris and dust particles into the atmosphere, causing a blackout. The lack of [[sun]] lead to the decay of most if not all of the earth’s [[biomass]]. Any prehistoric beings that had not died during the initial impact, soon gave way to starvation, and [[lung cancer]]. | |||
The discovery of [[meteorites]] off the coast of [[Africa ]]disputes this. With the newly found evidence, it is now believed that the meteor instead struck the [[ocean]]. The dramatic rise in temperature set forth optimal conditions for the creation of the only known hypercane in existence. As the hypercane tore through the [[continents]], the debris it pulled into the atmosphere caused a blackout effect. Most of the worlds biomass, and living inhabitants fell prey to the hypercane itself, and not the ensuing [[ice age]], which prevented life from inhabiting our planet for quit some time. | |||
==References== | ==References== | ||
Revision as of 15:54, 26 August 2008
A hypercane is a hypothetical class of extreme tropical cyclone that could form if ocean temperatures reached around Template:Convert/°C —15° higher than the warmest ocean temperature ever recorded[1]— which could in turn be caused by a large asteroid or comet impact, a large volcanic or supervolcanic eruption, or very extensive global warming.[2] There is some speculation that some dinosaurs might have been killed off by a series of hypercanes, resulting from an asteroid or comet crashing into Earth.[3] The term was coined by atmospheric scientist Kerry Emanuel in 1994, at MIT.[4][5]
Physical description
Hypercanes would have wind speeds of over Template:Convert/km/h, and would also have a central pressure of less than Template:Convert/hPa, giving them an enormous lifespan.[4] The extreme conditions needed to create such a storm could conceivably produce a system up to the size of North America, creating storm surges of 18 metres ({{rnd/cTemplate:Rnd/b|59|(1−1)|0}} ft) and an eye nearly 300 kilometres ({{rnd/cTemplate:Rnd/b|190|(1−2)|0}} mi) across. The waters could remain hot enough for weeks, allowing more hypercanes to be formed. A hypercane's clouds would reach 30 kilometres ({{rnd/cTemplate:Rnd/b|19|(1−1)|0}} mi) into the stratosphere. A hypercane would also damage the earth's ozone.[4] The reason for this is the water molecules sent up into the ozone layer merge with the ultraviolet light repelling particles and disintegrate the particles, creating a hole in the vicinity. Other scientists have theorized that the system, compared to a normal hurricane, would be considerably smaller, about 10 miles in diameter. This would more comparable to a tornado, which can top out to about a mile and a half in diameter.
Contraversy
As many theories circulate about the demise of the dinosaurs, only one holds true. The most popular, however, is that a meteor, spanning the size of North America, struck mid land pre continental drift. The impact drove debris and dust particles into the atmosphere, causing a blackout. The lack of sun lead to the decay of most if not all of the earth’s biomass. Any prehistoric beings that had not died during the initial impact, soon gave way to starvation, and lung cancer.
The discovery of meteorites off the coast of Africa disputes this. With the newly found evidence, it is now believed that the meteor instead struck the ocean. The dramatic rise in temperature set forth optimal conditions for the creation of the only known hypercane in existence. As the hypercane tore through the continents, the debris it pulled into the atmosphere caused a blackout effect. Most of the worlds biomass, and living inhabitants fell prey to the hypercane itself, and not the ensuing ice age, which prevented life from inhabiting our planet for quit some time.
References
- ↑ "Temperature of Ocean Water". Windows to the Universe. University Corporation for Atmospheric Research. 2001-08-31. http://www.windows.ucar.edu/tour/link=/earth/Water/temp.html&edu=high. Retrieved on 2008-07-24.
- ↑ Leahy, Stephen (2005-09-16). "The Dawn of the Hypercane?". Inter Press Service. http://ipsnews.net/news.asp?idnews=30308. Retrieved on 2008-07-24.
- ↑ Hecht, Jeff (1995-02-04). "Did storms land the dinosaurs in hot water?". New Scientist (1963): p. 16. http://www.newscientist.com/article/mg14519632.600-did-storms-land-the-dinosaurs-in-hot-water.html. Retrieved on 2008-07-24.
- ↑ 4.0 4.1 4.2 Emanuel, Kerry (1996-09-16). "Limits on Hurricane Intensity". Center for Meteorology and Physical Oceanography , MIT. http://wind.mit.edu/~emanuel/holem/holem.html. Retrieved on 2008-07-24.
- ↑ Emanuel, Kerry; Kevin Speer, Richard Rotunno, Ramesh Srivastava, Mario Molina (1998-03-22). "Hypercanes: A Possible Link to Global Extinction Scenarios". Journal of Geophysical Research 100 (D7): pp. 13755–13765. http://www.agu.org/pubs/crossref/1995/95JD01368.shtml. Retrieved on 2008-07-24.