| Session 4 | 
|  | Orographic Precipitation: Part IV | 
|  | 4:00 PM | 4.1 | Orographic Precipitation and Water Vapor Fractionation over the southern Andes (Invited)   Ronald B. Smith, Yale University, New Haven, CT; and J. Evans
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|  | 4:15 PM | 4.2 | Dynamics vs. aerosol induced warm-phase microphysics and orographic precipitation   Andreas Dieter Muehlbauer, ETH, Zurich, Switzerland; and U. Lohmann
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|  | 4:30 PM | 4.3 | Analysis of microphysical data in an orographic environment to evaluate a polarization radar-based hydrometeor classification scheme Sabine Goeke,  Univ. of Illinois, Urbana, IL; and D. M. Plummer
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|  | 4:45 PM | 4.4 | Model aerosol sensitivity studies and microphysical interactions in an orographic snowfall event   Stephen M. Saleeby, Colorado State Univ., Fort Collins, CO; and R. D. Borys, M. A. Wetzel, D. B. Simeral, M. P. Meyers, W. R. Cotton, R. L. McAnelly, N. Larson, and E. Heffernan
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|  | 5:00 PM | 4.5 | Small-scale gradients in climatological precipitation on the Olympic Peninsula Justin R. Minder, University of Washington, Seattle, WA; and A. M. Anders, D. Durran, and G. H. Roe
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|  | 5:15 PM | 4.6 | Orographic Enhancements in Precipitation: Preliminary Work Toward Construction of An Improved Global Monthly Precipitation Climatology Mingyue Chen, RS Information System, Inc., Camp Springs, MD; and P. Xie, J. Janowiak, and V. E. Kousky
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