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RISBoundary Layer Experiment—1983
Publisher: American Meteorological Society
Abstract: Interactions between fair-weather cumulus clouds and mixed-layer thermals were the focus of a one-month field experiment in Oklahoma. This experiment, called Boundary Layer Experiment?1983 (BLX83), combined remote sensors, ...
Lidar Measurements of Wind in the Planetary Boundary Layer: The Method, Accuracy and Results from Joint Measurements with Radiosonde and Kytoon
Publisher: American Meteorological Society
Abstract: During the Central Illinois Rainfall Chemistry Experiment (CIRCE), the University of Wisconsin lidar measured wind and turbulence profiles through the planetary boundary layer for a 32-h period in conjunction with surface ...
Two-Dimensional Vector Wind Fields from Volume Imaging Lidar Data
Publisher: American Meteorological Society
Abstract: Spatially resolved wind fields are derived by cross correlation of aerosol backscatter data from horizontal and vertical scans of the University of Wisconsin volume imaging lidar during the 1997/98 Lake-Induced Convection ...
An Evaluation of the Large-Eddy Simulation Option of the Regional Atmospheric Modeling System in Simulating a Convective Boundary Layer: A FIFE Case Study
Publisher: American Meteorological Society
Abstract: A large-eddy simulation (LES) model was used to simulate the convective boundary layer (CBL) that developed on 1 July 1987, over the domain of the First International Satellite Land Surface Climatology Project Field ...
Arctic Mixed-Phase Stratiform Cloud Properties from Multiple Years of Surface-Based Measurements at Two High-Latitude Locations
Publisher: American Meteorological Society
Abstract: Macro- and microphysical properties of single-layer stratiform mixed-phase clouds are derived from multiple years of lidar, radar, and radiosonde observations. Measurements were made as part of the Mixed-Phase Arctic Clouds ...
Test of a Calibration Device for Airborne Lyman-α Hygrometers
Publisher: American Meteorological Society
Abstract: A calibration device was designed to fit over the Lyman-α (LA) probes on the NCAR King Air aircraft to allow the introduction of pure nitrogen, oxygen, and carbon dioxide gases into the probe's radiation path. With these ...
Coincident Lidar and Aircraft Observations of Entrainment into Thermals and Mixed Layers
Publisher: American Meteorological Society
Abstract: Coincident observations of the daytime convective boundary layer over Oklahoma were made with the NCAR Queen Air aircraft and the University of Wisconsin ground-based lidar. The two data sets have been merged to provide a ...
Lidar Measurement of Wind Velocity Profiles in the Boundary Layer
Publisher: American Meteorological Society
Abstract: A lidar technique for measuring wind in the atmospheric boundary is presented. Inhomogeneities in ambient aerosol content are used as tracers of the wind. This technique yields both horizontal components of the wind and ...
Evaluating Large-Eddy Simulations Using Volume Imaging Lidar Data
Publisher: American Meteorological Society
Abstract: The authors apply data analysis techniques that demonstrate the power of using volume imaging lidar observations to evaluate several aspects of large-eddy simulations (LESs). They present observations and simulations of ...
The LCL Zone and Cumulus Onset
Publisher: American Meteorological Society
Abstract: Variations of the lifting condensation level (LCL) of surface layer air are documented based on data from the BLX83 field experiment in Oklahoma. For example, within a 25 km long region near Chickasha, the local LCL height ...