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RISMeasurements of Saharan Dust in Convective Clouds over the Tropical Eastern Atlantic Ocean
Publisher: American Meteorological Society
Abstract: ineral dust particles have been shown to act as cloud condensation nuclei, and they are known to interact with developing tropical storms over the Atlantic downwind of the Sahara. Once present within liquid droplets, they ...
Airflow and Water-Drop Trajectories at Instrument Sampling Points around the Beechcraft King Air and Lockheed Electra
Publisher: American Meteorological Society
Abstract: Due to distortion of airflow streamlines, flow velocities and droplet size distributions measured around a moving aircraft can differ from freestream conditions. This can complicate measurements made from aircraft platforms. ...
Improved Representation of Ice Particle Masses Based on Observations in Natural Clouds
Publisher: American Meteorological Society
Abstract: The mass?dimensional relationship put forth by Brown and Francis has been widely used for developing parameterizations for representing ice cloud microphysical properties. This relationship forms the cornerstone for past ...
Refinements to Ice Particle Mass Dimensional and Terminal Velocity Relationships for Ice Clouds. Part I: Temperature Dependence
Publisher: American Meteorological Society
Abstract: This two-part study attempts to find appropriate mass dimension and terminal velocity relationships that, when considered together with particle size distributions (PSD), agree with coincident measurements of ice water ...
Determination of the Combined Ventilation Factor and Capacitance for Ice Crystal Aggregates from Airborne Observations in a Tropical Anvil Cloud
Publisher: American Meteorological Society
Abstract: The ventilation factor and capacitance used in numerical models to represent ice crystal aggregates directly affects the growth rate of the ice crystal aggregates, and consequently the sink of atmospheric water vapor. ...
Measurement of Condensed Water Content in Liquid and Ice Clouds Using an Airborne Counterflow Virtual Impactor
Publisher: American Meteorological Society
Abstract: Condensed water content (CWC) measured using a counterflow virtual impactor (CVI) with a Lyman-α hygrometer downstream is compared with that measured by other airborne instruments (a hot-wire probe, a PMS FSSP, and a PMS ...
An Investigation of the Influence of Droplet Number Concentration and Giant Aerosol Particles upon Supercooled Large Drop Formation in Wintertime Stratiform Clouds
Publisher: American Meteorological Society
Abstract: Supercooled large drops (SLD) can be a significant hazard for aviation. Past studies have shown that warm-rain processes are prevalent, or even dominant, in stratiform clouds containing SLD, but the primary factors that ...
Effects of Aerosol Particles on the Microphysics of Coastal Stratiform Clouds
Publisher: American Meteorological Society
Abstract: Aerosol particles can act as cloud condensation nuclei and thereby influence the number and size of droplets in clouds. Consequently, anthropogenic particles have the potential to influence global climate by increasing ...
A Study of Cirrus Ice Particle Size Distribution Using TC4 Observations
Publisher: American Meteorological Society
Abstract: An analysis of two days of in situ observations of ice particle size spectra, in convectively generated cirrus, obtained during NASA?s Tropical Composition, Cloud, and Climate Coupling (TC4) mission is presented. The ...
In Situ Chemical Characterization of Aged Biomass-Burning Aerosols Impacting Cold Wave Clouds
Publisher: American Meteorological Society
Abstract: During the Ice in Clouds Experiment?Layer Clouds (ICE-L), aged biomass-burning particles were identified within two orographic wave cloud regions over Wyoming using single-particle mass spectrometry and electron microscopy. ...