100 Vortex streets edit Main article: Karman vortex street Cirrus fibratus intortus formed into a Kármán vortex street at evening twilight These patterns are formed from a phenomenon known as a Kármán vortex which is named after the engineer and fluid dynamicist Theodore von Kármán.
Levels and genera edit See also: Weather map and Station model Tropospheric cloud classification by altitude of occurrence.Lamarck had fondamenti di fisica, halliday-walker pdf worked independently on cloud classification the same year and had come up with a different naming scheme that failed to make an impression even in his home country of France because it used unusual French names for cloud types."Will Clouds Speed or Slow Global Warming?".The water reacts by radiating, also in the infrared, both upward and downward, and the downward longwave radiation results in increased warming at the surface.119 Measurements by nasa indicate that on the whole, the effects of low and mid-level clouds that tend to promote cooling outweigh the warming effects of high layers and the variable outcomes associated with vertically developed clouds.163 In China, clouds are symbols of luck and happiness.75 The species uncinus is similar but has upturned hooks at the ends."Nacreous PSC, International Cloud Atlas"."Curiosities-Green sky before tornado".76 85 Supplementary features, whether in the form of clouds or precipitation, are directly attached to the main genus-cloud.This subtype can be in the form of ragged but mostly stable stratiform sheets (stratus fractus) or small ragged cumuliform heaps with somewhat greater instability (cumulus fractus).Coloration such as this does not directly indicate that it is a severe thunderstorm, it only confirms its potential.
Retrieved 5 November 2013.
Smaller low-level "pyrocumulus" or "fumulus" clouds formed by contained industrial activity are now classified as cumulus homogenitus (Latin for 'man-made.
The heavier precipitating clouds, nimbostratus, towering cumulus (cumulus congestus and cumulonimbus typically see the formation in precipitation of the pannus feature, low ragged clouds of the genera and species cumulus fractus or stratus fractus.
74 Cirrostratus fibratus is a species made of semi-merged filaments that are transitional to or from cirrus."Cloud type identification by satellites" (PDF).82 A newly recognized species of stratocumulus or altocumulus has been given the name volutus, a roll cloud that can occur ahead of a cumulonimbus formation.Nasa-The Sun-Earth Connection: Heliophysics.For the first time, precipitation and the clouds from which precipitation fell were called meteors, which originate from the Greek word meteoros, meaning 'high in the sky'.Luke Howard 's nomenclature.This cloud type can produce moderate to heavy showers 52 and is designated Towering cumulus (Tcu) by icao.56 If the visibility is 1 kilometer or higher, the visible condensation is termed mist.Retrieved "Sculpting La Silla's Skies".98 Cumulonimbus mother cloud dissipating into stratocumulus cumulonimbogenitus at dusk Other genitus and mutatus clouds edit The genitus and mutatus categories have been expanded to include certain types that do not originate from pre-existing clouds.84 Unstable or mostly unstable edit More general airmass instability in the troposphere tends to produce clouds of the more freely convective cumulus genus type, whose species are mainly indicators of degrees of atmospheric instability and resultant vertical development of the clouds.The following table lists the power supply options that are available for selection.Archived from the original on Retrieved unlop 2003,. ."Nucleation of ice and its management in ecosystems".