Dr. John Hallett

Title: Research Professor Emeritus
Affiliation: Division of Atmospheric Sciences
Location: DRI Reno
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Phone: 775.674.7013
Full Resume: Download PDF

Research Areas

• Cloud Physics
• Cloud Electrification
• Atmospheric Chemistry
• Climate Dynamics
• Physical Meteorology

Professional Interests

Dr. Hallett is involved in basic and applied research in field and laboratory studies related to convective cloud precipitation processes, aerosol formation and scavenging, cloud electrification and the role of clouds in atmospheric radiation processes. He is investigating the basic mechanisms of crystal growth with particular reference to the surface structure of ice and the transition to ice dendrite growth in the atmosphere. These studies relate to how atmospheric aerosols influence the optical properties of ice and water clouds from the viewpoint of climate change and the formation of precipitation. He has developed new instruments for measurement by aircraft of cloud and precipitation liquid and ice content, and also for measurement of surface snowfall and rainfall at high resolution.

Click to enlarge image and see Dr. Hallett at zero gravity

Research Web Sites

• Ice Physics Laboratory
• Snow Crystals of the Atmosphere : snowcrystals.dri.edu