< p >在某种意义上,整个结构的积雨云延伸到地面。云是由空气的对流上升。列上升成为可见的云当大气温度变得足够冷凝结水汽,和发生在哪里我们看到底部。从< a href = " https://en.wikipedia.org/wiki/Cumulus_cloud " rel = " nofollow noreferrer " >维基百科< / >:< / p > < blockquote > < p >积云形成通过大气对流空气加热的表面开始上升。随着空气上升,气温下降(递减率后),导致相对湿度(RH)上升。如果RH对流达到一定水平达到百分之一百,和“wet-adiabatic"阶段就开始了。此时正反馈随之而来:由于RH是100%以上,水汽凝结,释放潜热,变暖的空气,刺激进一步的对流。< / p > < /引用> < blockquote > < p >在此阶段,水蒸气凝结在各种核出现在空气中,形成积雨云。这将创建特征平底的蓬松的形状与积云。[1][< a href = " https://doi.org/10.1175%2f1520 - 0469% - 281947% - 29004% - 3 - c0091%3aeoaiac%3e2.0.co%3b2”rel = " nofollow noreferrer " > < / > 2)云的高度(从底部到顶部)取决于大气的温度曲线和任何反演的存在。(< a href = " https://doi.org/10.1126%2Fscience.186.4164.632 " rel = " nofollow noreferrer " > 3 < / >) < / p > < /引用> < p >引用引用:< / p > < p > 1。 "Cumulus clouds". Weather. 16 October 2005. Retrieved 16 October 2012. 2. Stommel, Harry (June 1947). "Entrainment of Air Into a Cumulus Cloud". Journal of Meteorology. 4 (3): 91–94.
3. Mossop, S. C.; Hallett, J. (November 1974). "Ice Crystal Concentration in Cumulus Clouds: Influence of the Drop Spectrum". Science Magazine. 186 (4164): 632–634.