Now showing items 1-10 of 15
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 ...
Evaluating Winter Orographic Cloud Seeding : Design of the Wyoming Weather Modification Pilot Project (WWMPP)
Author(s):Breed, D.; Rasmussen, R.; Weeks, C.; Boe, B.; Deshler, Terry
An overview of the Wyoming Weather Modification Pilot Project (WWMPP) is presented. This project, funded by the State of Wyoming, is designed to evaluate the effectiveness of cloud seeding with silver iodide in the Medicine ...
Condensation Nuclei Measurements in the Midlatitude (1982-2012) and Antarctic (1986-2010) Stratosphere between 20 and 35 km
Author(s):Campbell, P.; Deshler, Terry
Balloon-borne stratospheric condensation nuclei (CN) measurements have been made from McMurdo Station, Antarctica (78°S), 1986-2010, and from Laramie, Wyoming (41°N), 1982 to the present. In the Antarctic region, the ...
Observation of Playa Salts as Nuclei in Orographic Wave Clouds
Author(s):Pratt, K. A.; Twohy, C. H.; Murphy, Shane; Moffet, R. C.; Heymsfield, A. J.; Gaston, C. J.; Demott, P. J.; Field, P. R.; Henn, T. R.; Rogers, D. C.; Gilles, M. K.; Seinfeld, J. H.; Prather, K. A.
During the Ice in Clouds Experiment-Layer Clouds (ICE-L), dry lakebed, or playa, salts from the Great Basin region of the United States were observed as cloud nuclei in orographic wave clouds over Wyoming. Using a counterflow ...
Coastal Jet Adjustment Near Point Conception, California, with Opposing Wind in the Bight
Author(s):Rahn, David A.; Parish, Thomas R.; Leon, Dave
Typical spring and summer conditions offshore of California consist of strong northerly low-level wind contained within the cool, well-mixed marine boundary layer (MBL) that is separated from the warm and dry free troposphere ...
Comparison of Arctic Clouds Between European Center for Medium-Range Weather Forecasts Simulations and Atmospheric Radiation Measurement Climate Research Facility Long-Term Observations at the North Slope of Alaska Barrow Site
Author(s):Zhao, Ming; Wang, Zhien
This study evaluated the European Center for Medium-Range Weather Forecasts (ECMWF) model-simulated clouds and boundary layer (BL) properties based upon Atmospheric Radiation Measurement Climate Research Facility observations ...
Influence of Soil Moisture on the Planetary Boundary Layer and on Cumulus Convection Over an Isolated Mountainm Part I. Observations, The
Author(s):Zhou, Xin; Geerts, Bart
Data collected around the Santa Catalina Mountains in Arizona as part of the Cumulus Photogrammetric, In Situ and Doppler Observations (CuPIDO) experiment during the 2006 summer monsoon season are used to investigate the ...
Constraining the Contribution of Organic Acids and AMS m/z 44 to the Organic Aerosol Budget : On the Importance of Meteorology, Aerosol Hygroscopicity, and Region
Author(s):Sorooshian, A.; Murphy, Shane; Hersey, S.; Bahreini, R.; Jonsson, H.; Flagan, R. C.; Seinfeld, J. H.
Airborne measurements in regions of varying meteorology and pollution are used to quantify the contribution of organic acids and a mass spectral marker for oxygenated aerosols, m/z 44, to the total organic aerosol budget. ...
Impact of Ground-Based Glaciogenic Seeding on Orographic Clouds and Precipitation : A Multisensor Case Study, The
Author(s):Pokharel, Binod; Geerts, Bart; Jing, Xiaoqin
A case study is presented from the 2012 AgI Seeding Cloud Impact Investigation, an experiment conducted over the Sierra Madre in southern Wyoming to study the impact of ground-based glaciogenic seeding on precipitation. ...