Results 111 to 120 of about 1,225 (164)

Abstracts of 14th International Symposium on Hodgkin Lymphoma

HemaSphere, Volume 10, Issue S2, October 2026.
wiley   +1 more source

Cloud Droplet Formation: The Crucial Role of Cloud Condensation Nuclei

This study investigates aerosol hygroscopicity and CCN activation ratios using aerosol size distribution, chemical composition, and meteorology\nmeasured at the National Atmospheric Observatory Košetice, Czech Republic. The study findings showed that CCN activation ratios (AR) increase with increasing supersaturation (SS) across all clusters of air ...
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Activation properties of cloud condensation nuclei in liquid clouds and fog

, 2014
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Airborne bacteria as cloud condensation nuclei

Journal of Geophysical Research D: Atmospheres, 2003
Bacteria cultivated from aerosol and cloud water samples collected at a remote Austrian mountain site under wintry conditions were tested for their ability to act as cloud condensation nuclei (CCN). The experiment was carried out with a cloud condensation nuclei counter (CCNC) operating on the principle of a static thermal diffusion chamber.
Hans Puxbaum, Anne Kasper-Giebl, Regina Hitzenberger   +2 more
exaly   +3 more sources

Cloud condensation nuclei as a source of ice-forming nuclei in clouds

Journal of Aerosol Science, 1991
Abstract For the first time it has been found that sorption ice-forming nuclei (IFN) are produced in a cloud when cloud droplets are evaporating. Ice crystals form by vapor diffusion at the moment when a fraction of the residues of evaporated droplets (newly formed aerosol particles) become IFN. In this study, the concentration of sorption IFN varied
J Rosinski, G Morgan
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Composition of cloud condensation nuclei

Journal of Geophysical Research: Atmospheres, 2003
The composition of cloud condensation nuclei (CCN) was determined by thermal analysis, whereby CCN and aerosol particles were heated to temperatures up to 500°C. The CCN were observed in the urban atmosphere of Nagoya and in the coastal atmosphere of Mikuni, Japan.
Yutaka Ishizaka, Mandira Adhikari
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Surface cloud condensation nuclei and condensation nuclei measurements at Reno, Nevada

Atmospheric Environment. Part A. General Topics, 1991
Surface aerosol measurements from a moderately populated high mountain valley are interpreted in terms of local wind velocity and meteorology. Diurnal trends are apparent with light winds and especially during wintertime temperature inversions when the concentrations are dominated by local anthropogenic sources.
James G. Hudson, Paul R. Frisbie
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Acoustic Cloud Condensation Nuclei Counter

Noise Control and Acoustics, 2005
Analysis and simulation of an acoustic cloud condensation nuclei counter is presented. The instrument is capable of accurately counting the number of micro scale water droplets impacting a water surface. The sound produced underwater by the water droplets is determined when the droplets strike the water surface with an impact velocity equal to either ...
Abhijit Deshpande, Marcellin Zahui
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Volatility and size of cloud condensation nuclei

Journal of Geophysical Research: Atmospheres, 1996
Cloud condensation nuclei (CCN) volatility and size versus critical supersaturation Sc measurements are presented for maritime, continental, and urban areas. The measurements included both hemispheres of the globe. Although this was a nonsystematic preliminary survey, some general trends are shown.
James G. Hudson, Xiaoyu Da
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Cloud Condensation Nuclei

Journal of Applied Meteorology, 1993
Abstract The state of knowledge of the particles upon which liquid droplets condense to form atmospheric water clouds is presented. The realization of cloud condensation nuclei (CCN) as a distinct aerosol subset originated with the cloud microphysical measurements and theoretical insights of Patrick Squires 40 years ago.
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