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Cloud physics - Wikipedia


Cloud physics is the study of the physical processes that lead to the formation, growth and precipitation of atmospheric clouds. Clouds consist of microscopic droplets of liquid water (warm clouds),...

Water vapor droplets can become cloud droplets when what is ...


Dew point ... Water vapor droplets can become cloud droplets when what is reached? .... What happens when clouds become heavy with water droplets?

How do water droplets in clouds cohere? - Scientific American


When air cools, the amount of water vapor it can hold decreases. ... With sufficient cooling, the air reaches saturation and small cloud droplets begin to form. ... development in the form of layers that can become many kilometers thick at low- to ...

CLOUD PHYSICS - Collision/Coalescence; The Bergeron Process


In order for cloud droplets, which are very small, to become rain drops, they have to ... must take place allowing for the conversion of water vapor to liquid water. ... It is not until these high levels of saturation are reached that the forcing will ...

Growth of a Population of Cloud Droplets


How do droplets grow and become rain drops? ... Condensation can get droplets to 20 mm. ... diffusion field is established around the droplet so that the mass of water vapor diffusing across any spherical surface of ... After the saturation level ( LCL) is reached, condensation begins to occur on the largest, most active nuclei.

ATMO336 - Fall 2015


A Cloud is a visible assemblage of small water droplets and/or ice crystals ... of many droplets within a small volume make clouds visible because they will ... water vapor in the air condenses (or deposits) into liquid water droplets (or ice crystals). ... Once this point is reached, when air parcels rise higher, their temperature ...

What are clouds and how do they form? - Met Office


Apr 20, 2016 ... Clouds will either be composed of ice or water droplets depending on the height ... When the air is cooled, some of the water vapour sticks to the aerosols ... The height at which dew point is reached and clouds form is called the condensation level. ... This can cause cumulus cloud and showery conditions.

Preferential Concentration of Cloud Droplets by Turbulence: Effects ...


Droplets growing in regions of high vorticity will experience enhanced growth ... variations of temperature or liquid water content at cloud base, variations in ..... is the partial pressure of water vapor, es is the equilibrium vapor pressure of water, .... are reached than the peak supersaturation at cloud base and new droplets are  ...

How many cloud droplets does it take to make one raindrop? - Quora


This usually depends on several factors related to weather. But to sum it up, dew point and ... A cloud droplet usually has less than 1-10 ul (microlitres) of water content. When the dew point is reached, or the humidity is nearing saturation, these droplets may combine ... Why does air become cooler as the droplets evaporate?

Conditions for super-adiabatic droplet growth after entrainment mixing


Jul 29, 2016 ... can be broadened through diffusion growth due to cloud base mixing and vertical .... droplets is due to water vapor condensation; (5) sedimenta- tion and .... Even if ql,fm is negative at z = 0, it can become positive at higher altitude. .... Cloud base is reached at z = 615m, where CCN are acti- vated as cloud ...