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Studies of Ice Nucleating Aerosol Particles in Arctic Cloud SystemsThe focus of this research is to improve the understanding of ice nucleating aerosol particles (IN) and the role they play in ice formation in Arctic clouds. IN are important for global climate issues in a variety of ways. The primary effect is their role in determining the phase (liquid or solid) of cloud particles. The microscale impact is on cloud particle size, growth rate, shape, fall speed, concentration, radiative properties, and scavenging of gases and aerosols. On a larger scale, ice formation affects the development of precipitation (rate, amount, type, and distribution), latent heat release (rate and altitude), ambient humidity, the persistence of clouds, and cloud albedo. The overall goals of our FIRE 3 research are to characterize the concentrations and variability of Arctic IN during the winter-spring transition, to compare IN measurements with ice concentrations in Arctic clouds, and to examine selected IN samples for particle morphology and chemical there are distinguishable chemical signatures. The results can be combined with other measurements of aerosols, gaseous species, and cloud characteristics in order to understand the processes that determine the phase and concentration of cloud particles.
Document ID
20010069655
Acquisition Source
Langley Research Center
Document Type
Contractor or Grantee Report
Authors
Rogers, David C. (Colorado State Univ. Fort Collins, CO United States)
DeMott, Paul J. (Colorado State Univ. Fort Collins, CO United States)
Kreidenweis, Sonia M. (Colorado State Univ. Fort Collins, CO United States)
Date Acquired
September 7, 2013
Publication Date
January 1, 2001
Subject Category
Meteorology And Climatology
Funding Number(s)
CONTRACT_GRANT: NAG1-2063
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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