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Movie of the solar photosphere observed with the
Swedish 1-m Solar Telescope (SST) on La Palma, Spain. The movie shows solar granulation which is a result of convective motions of bubbles of hot gas that rise from the solar interior. When these bubbles reach the surface, the gas cools and flows down
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All thunderstorms, regardless of type, go through three stages: a 'developing stage', a 'mature stage', and a 'dissipating stage'. The average thunderstorm has a 24 km (15 mi) diameter. Depending on the conditions present in the atmosphere, these three stages take an average of 30 minutes
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A convection cell is most notable in the formation of clouds with its release and transportation of energy. As air moves along the ground it absorbs heat, loses density and moves up into the atmosphere. When it is forced into the atmosphere, which has a lower air pressure, it cannot contain as much
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again in the darker lanes between the bright cells. In these so-called intergranular lanes, we can also see small bright points and more extended bright elongated structures. These are regions with strong magnetic fields.
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fluid as at a lower altitude, so it releases its moist air, producing rain. In this process the warm air is cooled; it gains density and falls towards the earth and the cell repeats the cycle.
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A rising body of fluid typically loses heat when it encounters a cold surface when it exchanges heat with colder liquid through direct exchange, or in the example of the
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to form, which support lightning and thunder. Generally, thunderstorms require three conditions to form: moisture, an unstable air mass, and a lifting force (heat).
133:. Convection usually requires a gravitational field, but in microgravity experiments, thermal convection has been observed without gravitational effects.
163:. The size of convection cells is largely determined by the fluid's properties. Convection cells can even occur when the heating of a fluid is uniform.
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of vaporisation, which allows the rising packet of air to cool less than its surrounding air, continuing the cloud's ascension. If enough
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averaging about 1,000 kilometres in diameter. The plasma cools as it rises and descends in the narrow spaces between the granules.
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Altocumulus cloud as seen from the Space
Shuttle. Altocumulus clouds are formed by convective activity.
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Heating caused by the compression of descending air is responsible for such winter phenomena as the
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after fermenting 10 days with cinnamon floating on top. Convection is caused by yeast releasing CO2.
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Warm air has a lower density than cool air, so warm air rises within cooler air, similar to
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Civil engineers' pocket book: a reference-book for engineers, contractors
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Nonboussinesq
Thermal Convection in Microgravity under Nonuniform Heating
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is present in the atmosphere, this process will continue long enough for
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Storm world: hurricanes, politics, and the battle over global warming
496:"A Severe Weather Primer: Questions and Answers about Thunderstorms"
446:. New York: Black Dog & Leventhal Publisher. pp. 210–211.
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Fluids are generalized as materials that exhibit the property of
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383:"Fog And Stratus – Meteorological Physical Background"
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Convection cells can form in any fluid, including the
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246:(as it is known in western North America) or the
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494:National Severe Storms Laboratory (2006-10-15).
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385:. Zentralanstalt fĂĽr Meteorologie und Geodynamik
354:. Chinese International Press. pp. 112–13.
500:National Oceanic and Atmospheric Administration
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16:Cyclic flow of convection currents in a fluid
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65:Learn how and when to remove this message
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280:is composed of convection cells called
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411:. Houghton Mifflin Harcourt. p.
307:Yu. A.Gaponenko and V. E. Zakhvataev,
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179:Within the Earth's troposphere
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351:Ancient Chinese Inventions
321:Albert Irvin Frye (1913).
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131:Rayleigh–Bénard convection
442:Michael H. Mogil (2007).
403:Chris C. Mooney (2007).
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238:Adiabatic processes
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119:convection currents
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173:Earth's atmosphere
153:Earth's atmosphere
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55:October 2023
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41:Please help
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34:lead section
278:photosphere
224:instability
220:latent heat
212:water vapor
142:rock slides
550:Convection
510:2009-09-01
428:2009-08-31
389:2009-02-07
367:2009-06-18
334:2009-08-31
294:References
276:The Sun's
196:See also:
123:convection
91:honey wine
544:Category
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283:granules
216:condense
244:chinook
167:Process
107:density
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198:Cloud
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