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Reports on Progress in Physics, 1951
The results of recent research into the microphysical processes involved in the formation of clouds and precipitation are described and assessed. While the rate of spontaneous nucleation in water vapour is inappreciable until the supersaturation reaches about 400%, the presence of foreign nuclei in the atmosphere allows cloud formation with ...
B J Mason, F H Ludlam
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The results of recent research into the microphysical processes involved in the formation of clouds and precipitation are described and assessed. While the rate of spontaneous nucleation in water vapour is inappreciable until the supersaturation reaches about 400%, the presence of foreign nuclei in the atmosphere allows cloud formation with ...
B J Mason, F H Ludlam
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Icarus, 1983
Because sulfuric acid does not wet sulfur, composite drops in the atmosphere of Venus cannot have sulfur 'cores', but must instead have sulfur coats. Both components then communicate with the vapor phase. Drops that are fully coated with sulfur are immune to coalescence; this sets a limit to growth that may explain 'Mode 3' particles.
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Because sulfuric acid does not wet sulfur, composite drops in the atmosphere of Venus cannot have sulfur 'cores', but must instead have sulfur coats. Both components then communicate with the vapor phase. Drops that are fully coated with sulfur are immune to coalescence; this sets a limit to growth that may explain 'Mode 3' particles.
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Microphysical relationships in warm clouds
Atmospheric Research, 2001Abstract Relationships among cloud microphysical parameters from six aircraft projects carried out over different parts of the globe in different seasons are presented. Comparisons of project averages showed that projects with higher droplet (2–50 μm diameter) concentrations generally had smaller droplets and less drizzle (diameter >50 μm).
Seong Soo Yum, James G. Hudson
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Cloud Microphysics and Climate
Science, 1997Recent studies have shown that global radiative and hydrological fluxes are strongly linked to microphysical processes in clouds. The sensitivity of predictions of climate variations to assumptions about the microphysical processes has led to new approaches to atmospheric measurements and to heightened interest and progress in understanding the ...
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Microphysical properties of stratocumulus clouds
Atmospheric Research, 2000Data collected in situ with the Meteo-France Merlin-IV instrumented aircraft during the EUCREX mission 206 are analyzed to document cloud properties that are relevant to the calculation of cloud radiative properties. Ascents and descents through the cloud layer reveal that most of the vertical profiles of liquid water content (LWC) and droplet sizes ...
Hanna Pawlowska +2 more
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1990
Radar meteorology is the discipline of trying to use back-scattered electromagnetic radiation to gain information about the state of the atmosphere, especially with respect to clouds and precipitation. To interpret the returned signal, atmospheric scientists only have the four fundamental properties of electromagnetic waves at their disposal: amplitude,
A. R. Jameson, D. B. Johnson
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Radar meteorology is the discipline of trying to use back-scattered electromagnetic radiation to gain information about the state of the atmosphere, especially with respect to clouds and precipitation. To interpret the returned signal, atmospheric scientists only have the four fundamental properties of electromagnetic waves at their disposal: amplitude,
A. R. Jameson, D. B. Johnson
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Aerosols, Cloud Microphysics, and Fractional Cloudiness
Science, 1989Increases in aerosol concentrations over the oceans may increase the amount of low-level cloudiness through a reduction in drizzle—a process that regulates the liquid-water content and the energetics of shallow marine clouds. The resulting increase in the global albedo would be in addition to the increase due to enhancement in reflectivity associated ...
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Turbulence and cloud microphysics
Atmospheric Research, 1996Abstract The effects of in-cloud turbulence on the growth of cloud droplets by condensation and coalescence in low level water clouds are reviewed. It is shown that while the entrainment of dry air into clouds may explain the observed variability in the droplet spectra, and particularly in droplet concentration, doubt still exists as to whether the ...
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Cloud-Radiative and Microphysical Processes
2016In this chapter, cloud-radiative processes are examined through the comparison between the sensitivity experiments with varied and fixed cloud single-scattering albedo and asymmetric factor. Cloud microphysical processes are investigated through the comparison between the sensitivity experiments with and without schemes of depositional growth of snow ...
Xiaofan Li, Shouting Gao
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Cloud Microphysical Processes Relevant to Cloud Chemistry
1988In this paper a review is presented of recent field studies of cloud microphysics in a hill cap cloud and in growing cumulus clouds. In each case the implications of the results for cloud chemical processes are discussed. In particular it is suggested that the entrainment of dry air into the cloud from the free troposphere may reduce the lifetime of ...
T. W. Choularton, T. A. Hill
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