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Effects of Variable Droplet Growth Histories on Droplet Size Distributions. Part I: Theory
Publisher: American Meteorological Society
Abstract: A theoretical framework is developed that permits estimation of the effects of fluctuating supersaturation on the development of cloud droplet size spectra. The studies focus on the role of turbulent fluctuations in vertical ...
Effects of Coincidence on Measurements with a Forward Scattering Spectrometer Probe
Publisher: American Meteorological Society
Abstract: A PMS Forward Scattering Spectrometer Probe (FSSP) may fail to detect a droplet that enters the illuminated volume in coincidence with another droplet, or such a coincident pair may be assigned an erroneous size. This ...
A Possible Mechanism for Contact Nucleation
Publisher: American Meteorological Society
Abstract: A contact nucleation mechanism is suggested, by which ice embryos formed on a nucleus in vapor are able to nucleate supercooled water on contact. Using conventional nucleation theory, the activity of a contact nucleus is ...
The Origin of Ice in Mountain Cap Clouds
Publisher: American Meteorological Society
Abstract: Ice crystal development in relatively simple layer clouds was studied using airborne instrumentation. The patterns in the development of ice in those clouds suggest that the ice originates in association with the initial ...
Effects of Airflow Trajectories Around Aircraft on Measurements of Scalar Fluxes
Publisher: American Meteorological Society
Abstract: Potential-flow calculations of the airflow around two research aircraft are used to estimate the effect of flow distortion on measured fluxes of sensible heat and water vapor. From the calculated flow patterns, flow-distortion ...
Variability of the Supersaturation in Cumulus Clouds
Publisher: American Meteorological Society
Abstract: The quasi-steady supersaturation in cumulus clouds from the Cooperative Convective Precipitation Experiment of 1981 are calculated from measurements of vertical wind, cloud droplet size, temperature and pressure. Mean ...