Now showing items 1-10 of 20
AgI Seeding Cloud Impact Investigation (ASCII) Campaign 2012 : Overview and Preliminary Results, The
Author(s):Geerts, Bart; Pokharel, Binod; Friedrich, Katja; Breed, Dan; Rasmussen, Roy; Yang, Yang; Miao, Qun; Haimov, Samuel; Boe, Bruce; Kalina, Evan
The ASCII campaign was conducted in early 2012 over the Sierra Madre range in Wyoming, to examine cloud microphysical changes resulting from the ground-based injection of silver iodide (AgI) into shallow orographic clouds. ...
Numerical study of the evolving convective boundary layer and orographic circulation around the Santa Catalina Mountains in Arizona, Part I. Circulation without deep convection, A
Author(s):Demko, J. C.; Geerts, Bart
The daytime evolution of the thermally forced boundary layer (BL) circulation over an isolated mountain, about 30 km in diameter and 2 km high, is examined by means of numerical simulations validated with data collected ...
Dispersion of Silver Iodide Particles from Ground-Based Generators Over Complex Terrain, Part II. WRF Large-Eddy Simulations Versus Observations, The
Author(s):Xue, Lulin; Chu, Xia; Rasmussen, Roy; Breed, Daniel; Boe, Bruce; Geerts, Bart
A numerical modeling study has been conducted to explore the ability of the Weather Research and Forecasting (WRF) model-based large-eddy simulation (LES) with 100-m grid spacing to reproduce silver iodide (AgI) particle ...
Numerical study of the evolving convective boundary layer and orographic circulation around the santa catalina mountains in Arizona, Part II. Interaction with deep convection, A
Author(s):Geerts, Bart; Parish, T. R.
This is the second part of a study that examines the daytime evolution of the thermally forced boundary layer (BL) circulation over a relatively isolated mountain, about 30 km in diameter and 2 km high, and its interaction ...
Dryline in Southeast Wyoming. Part II : Airborne In Situ and Raman LiDAR Observations, A
Author(s):Bergmaier, Philip T.; Geerts, Bart; Wang, Zhien; Liu, Bo; Campbell, Patrick C.
Part I of this study describes the mesoscale structure of a dryline over southeastern Wyoming. This dryline formed just east of the western rim of the high plains on 22 June 2010 and became more defined as it progressed ...
Boundary layer turbulence and orographic precipitation growth in cold clouds : Evidence from profiling airborne radar data
Author(s):Geerts, Bart; Miao, Qun; Yang, Yang
Airborne vertically pointing Doppler radar data collected in 10 winter storms over the Medicine Bow Range in Wyoming are used to examine the importance of boundary layer (BL) turbulence for orographic precipitation growth. ...
Case Study of Radar Observations and WRF LES Simulations of the Impact of Ground-Based Glaciogenic Seeding on Orographic Clouds and Precipitation, Part I. Observations and Model Validations, A
Author(s):Chu, Xia; Xue, Lulin; Geerts, Bart; Rasmussen, Roy; Breed, Daniel
Profiling airborne radar data and accompanying Large Eddy Simulation (LES) modelling are used to examine the impact of ground-based glaciogenic seeding on cloud and precipitation in a shallow stratiform orographic winter ...
Airborne profiling radar study of the impact of glaciogenic cloud seeding on snowfall from winter orographic clouds, An
Author(s):Geerts, Bart; Miao, Q.; Yang, Y.; Rasmussen, R.; Breed, D.
Data from an airborne vertically pointing millimeter-wave Doppler radar are used to study the cloud microphysical effect of glaciogenic seeding of cold-season orographic clouds. Fixed flight tracks were flown downstream ...
2012 Unidata Users Workshop Navigating Earth System Science Data
Author(s):Lazarus, S. M.; Collllins, J. M.; Baxter, M. A.; Hanks, A. C.; Whittaker, T. M.; Tyle, K. R.; Cecelslski, S. F.; Geerts, Bart; Ramamurthy, M. K.
The Unidata Program Center (UPC) worked with the Unidata Users Committee to organize triennial summer workshops on topics of interest to the Unidata community. The 2012 workshop theme, entitled 'navigating Earth system ...
Simulating the IHOP_2002 Fair-Weather CBL with the WRF-ARW-Noah Modeling System. Part I : Surface Fluxes and CBL Structure and Evolution along the Eastern Track
Author(s):Lemone, Margaret A.; Chen, Fei; Tewari, Mukul; Dudhia, Jimy; Geerts, Bart; Miao, Qun; Coulter, Richard L.; Grossman, Robert L.
Fair-weather data from the May-June 2002 International H2O Project (IHOP_2002) 46-km eastern flight track in southeast Kansas are compared to simulations using the advanced research version of the Weather Research and ...