condensation nuclei

Small particles in the air on which water vapors condense or sublimate. Smoke and dust particles act as condensation nuclei.

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The researchers estimate that aircraft have increased the concentration of natural condensation nuclei over Laramie by about 10 percent.

What aircraft leave behind

They are able to influence the formation of clouds in the atmosphere by acting as condensation nuclei to which gaseous water vapor attaches, whereby cloud droplets are produced.

Germany : Ammonia emissions from agriculture can affect cloud formation over Asia

O., 2009: Correlation between cloud condensation nuclei concentration and aerosol optical thickness in remote and polluted regions.

ULTRAFINE PARTICLES IN THE LOWER TROPOSPHERE: Major Sources, Invisible Plumes, and Meteorological Transport Processes: A decade of airborne regional-scale measurements of aerosol size distributions and meteorological parameters allows apportionment of major sources and budget estimates for ultrafine particles

Airborne particles can be captured as condensation nuclei as dew condenses, whereas gases or liquid particles might dissolve into the dewdrops [5].

Recognizing Dew as an Indicator and an Improver of Near-Surface Air Quality

Washington, March 26 (ANI): In a new research, scientists have determined that as soot particles in the atmosphere age, airborne sulfuric acid may help turn them into condensation nuclei, which enable the formation of clouds.

Sulfuric acid may help soot turn into cloud seeds

Climatologists need to understand how global warming might affect the number of condensation nuclei in these clouds, Radke says.

Cloudy concerns: will clouds prevent or promote a drastic global warning?

In nature, mineral dust particles, among other things, form condensation nuclei for the ice particles.

Germany : Chemistry in clouds: How ice particles promote the formation of radicals

Shipborne measurements of total particle concentrations are widespread, but measurements of cloud condensation nuclei (CCN), particle composition, and BC (see sidebar "Developments in aerosol microphysical measurements") are concentrated over the Atlantic and Arctic.

THE GLOBAL AEROSOL SYNTHESIS AND SCIENCE PROJECT (GASSP): Measurements and Modeling to Reduce Uncertainty: Novel methodologies for quantifying model uncertainty are combined with an extensive new database of in situ aerosol microphysical and chemical measurements to reduce uncertainty in aerosol effects on climate

Aerosol particles include sea salt, dust, air pollutants and biomass-burning smoke particles, and nearly all can act as cloud condensation nuclei (also known as cloud seeds).

Nasa investigates impact of PHL smoke on clouds

The earlier study examines the cumulative effect of dust acting as cloud nucleating aerosol CCN, giant cloud condensation nuclei (GCCN), and ice nuclei (IN) along with anthropogenic aerosol pollution acting primarily as CCN, over the entire Colorado Rocky Mountains from the months of October to April in the year 2004-2005, the snow year.

Sensitivity Studies on the Impact of Dust and Aerosol Pollution Acting as Cloud Nucleating Aerosol on Orographic Precipitation in the Colorado River Basin

Cloud condensation nuclei or CCNs are typically 0.2 AaAaAeAe[micro]m, or 1/100 the size of a normal cloud droplet.

Cosmic Rays Trigger Cloud Formation In Earth's Atmosphere

Condensation of water vapour is exacerbated in polluted environment with increasing ANC due to increase in condensation nuclei often of very small size due to anthropogenic origin.

Aerosol number concentrations and visibility during dense fog over a subtropical urban site