Arlen W. Huggins

Hourly Associate Research Scientist
CCN, cloud microphysics

Professional Interests

Dr. Huggins's research interests center on cloud and aerosol physics. He has made extensive field measurements of cloud condensation nuclei (CCN) in various parts of the world. He compares the CCN spectra with cloud droplet spectra to obtain a better fundamental understanding of cloud physics. He is also interested in differentiating between man made and natural CCN. This is important in determining anthropogenic effects on clouds which is important for global climatic considerations. Recent work has also involved physical characterization of CCN (volatility and the relationship between physical size and critical supersaturation) in order to understand sources. This and the interstitial and droplet residue measurements are now better done with the two matched DRI CCN spectrometers as has been done in two of his most recent aircraft research projects.

Research Areas

  • Atmospheric Chemistry
  • Climate Dynamics
  • Physical Meteorology


Ph.D. 1976 University of Nevada, Reno Atmospheric Physics
M.S. 1970 University of Michigan Physics
B.S. 1968 Western Michigan University Physics and Mathematics

Publications & Presentations


Tilley, J., Huggins, A. W., Layman, L. R., Fearon, M. G., David, R. O., McDonough, F. (2015). Trace Chemical Analysis of Water and Soil during the WWMPP: Results and Implies Environmental Impacts, 20th Conference on Planned and Inadvertent Weather Modification: Phoenix, AZ, January 4, 2015


Pokharel, A. K., Geerts, B., Jing, X., Friedrich, K., Aikins, J., Breed, D., Rasmussen, R., Huggins, A. W. (2014). The impact of ground-based glaciogenic seeding on clouds and precipitation over mountains: A multi-sensor case study of shallow precipitating orographic cumuli, Atmos. Res., 147-148, 162-182


Huggins, A. W. (2012). An Update on Cloud Seeding for Snowfall Augmentation Panel: Emerging Augmentation Strategies, 2012 Nevada Water Resources Association Annual Conference: Las Vegas, NV, March 7, 2012


Boyle, D. P., Lamorey, G., Huggins, A. W. (2006). Application of a hydrologic model to assess the effects of cloud seeding in the Walker River Basin of Nevada, J Weather Mod, 38, 66-76


Boyle, D. P., Lamorey, G., Huggins, A. W. (2005). Application of a hydrologic model to assess the effects of cloud seeding in the Walker River basin, Nevada
Edwards, R., Huggins, A. W., McConnell, J. R. (2005). Trace Chemistry Evaluation of the Idaho Power Company Operation Cloud Seeding Program 2003 to 2005, DRI Report No. 41223
Grubisic, V., Vellore, R. K., Huggins, A. W. (2005). Quantitative precipitation forecasting of wintertime storms in the Sierra Nevada: Sensitivity to the microphysical parameterization, Mon. Wea. Rev., 133, 2834-2859


Huggins, A. W., Edwards, R. R., McConnell, J. R. (2004). Summary of trace chemical and physical measurements of snowfall in two Nevada cloud seeding target areas