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RISLiquid Water Content and Temperature Relationship from Aircraft Observations and Its Applicability to GCMs
Publisher: American Meteorological Society
Abstract: The vertical distribution of liquid water content (LWC) and its relationship with temperature (T) strongly affect the heat budget of the atmosphere. Some large-scale models of the atmosphere use a relationship between LWC ...
Scale Effects on Averaging of Cloud Droplet and Aerosol Number Concentrations: Observations and Models
Publisher: American Meteorological Society
Abstract: The purpose of this study, using in situ observations from five field projects, is to analyze cloud boundaries and averaging scales related to droplet number concentration (Nd) and total aerosol number concentration (Na), ...
The Importance of Cloud Top Lifetime in the Description of Natural Cloud Characteristics
Publisher: American Meteorological Society
Abstract: The microphysical and dynamical characteristics of 156 natural summer cumulus clouds have been documented for three locations in North America: Yellowknife, Northwest Territories; Thunder Bay, Ontario; and Miles City, ...
A Comparison of Temperature–Precipitation Relationships from Observations and As Modeled by the General Circulation Model of the Canadian Climate Centre
Publisher: American Meteorological Society
Abstract: A simple temperature and precipitation relationship, as obtained from observed daily values for Canadian stations, has been compared with the relationship produced by the Canadian Climate Centre second-generation climate ...
Another “Time Lag” in the Activation of Atmospheric Ice Nuclei
Publisher: American Meteorological Society
Abstract: If most atmospheric ice nuclei activate by contacting or immersing themselves inside a water droplet, then ice nucleus cloud chambers may seriously underestimate the concentration of these particles. Ice nuclei diffuse ...
Ice Nucleus Concentrations at −20C During Convective Storms
Publisher: American Meteorological Society
Abstract: Increases in surface ice nucleus concentrations at ?20C (by a factor of 10 or higher) have been measured during precipitation from hailing and non-hailing convective storms; these increases are associated with the storm ...
On a New Approach for Instantaneous Rain Area Delineation in the Midlatitudes Using GOES Data
Publisher: American Meteorological Society
Abstract: Using satellite and weather radar data, a simple clustering analysis has been used in order to differentiate between raining and nonraining clouds. Based on these results, a scheme is proposed for instantaneous rain area ...
Large Particles in Supercooled Regions of Northern Canadian Cumulus Clouds
Publisher: American Meteorological Society
Abstract: Measurements have been made of the concentration and phase of large particles (>70 ?m) within the supercooled regions of northern Canadian cumulus clouds. During June and July, for the years 1975 and 1976, a total of 58 ...
Turbulent Characteristics of Some Canadian Cumulus Clouds
Publisher: American Meteorological Society
Abstract: The turbulent characteristics of 17 Canadian cumulus clouds have been documented using the measurements from a specially instrumented T-33 aircraft. Most of the 33 cloud penetrations were made through the tops of cumuli ...