condensation nuclei


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condensation nuclei

neutral particles, such as dust, in the atmosphere that are able to absorb or adsorb water and grow. At relatively high humidities they form fogs or hazes. Condensation nuclei consisting of sulfuric or nitric acid vapors or nitrogen oxides may be a source of respiratory irritants.
References in periodicals archive ?
The cooling benefits of reducing emissions, her team found, were partially offset by the fact that less soot meant fewer cloud condensation nuclei and thus fewer clouds to cool things down.
A modeling study of the response of tropical deep convection to the increase of cloud condensation nuclei concentration: 1.
As a result, they did not form cloud condensation nuclei, as is usually expected in such dust particles, and so they suppressed rainfall and exacerbated the droughts.
Not necessarily', said Fred, 'These clouds could be saturated with water vapour, but for rain to fall, tiny particles known as condensation nuclei are required.
According to a much discussed model proposed by Danish researchers, the ions produced by cosmic rays act as condensation nuclei for larger suspension particles and thus contribute to cloud formation.
Additionally, cloud seeding, a process in which chemical condensation nuclei are introduced into cloud systems, could increase precipitation by 10-20 percent (Schiller, 1993).
Only aged BC particles can act as cloud condensation nuclei and be removed by in-cloud scavenging.
Understanding the factors controlling the growth of newly formed clusters into climatically relevant particles and cloud condensation nuclei (CCN) enables estimating their importance in the climate system more accurately.
They are important because they strongly affect Earth's energy balance in two ways: they scatter and absorb sunlight and infrared emission from Earth's surface, and act as condensation nuclei for the formation of cloud droplets.
Working with Gregory Roberts at the Scripps Institution of Oceanography, Nenes developed a new type of cloud condensation nuclei (CCN) counter.
Towns are a good source of condensation nuclei and this goes some way to explaining why cities like Birmingham get more than their fair share of convective rainfall and thunderstorms.