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RISObservational and Numerical Evidence of Depressed Convective Boundary Layer Heights near a Mountain Base
Publisher: American Meteorological Society
Abstract: Recent field and numerical studies show evidence of the existence of a convective boundary layer height depression near a mountain base. This depression can have implications for air pollutant transport and concentrations ...
Effect of Dewfall and Frostfall on Nighttime Cooling in a Small, Closed Basin
Publisher: American Meteorological Society
Abstract: Series of tethered balloon soundings of temperature and humidity in Austria?s Gruenloch basin (floor elevation 1270 m MSL) on two June days showed that the water vapor mixing ratio fell by 2?3 g kg?1 overnight as dew or ...
On the Time Scale of Nocturnal Boundary Layer Cooling in Valleys and Basins and over Plains
Publisher: American Meteorological Society
Abstract: Sequences of vertical temperature soundings over flat plains and in a variety of valleys and basins of different sizes and shapes were used to determine cooling-time-scale characteristics in the nocturnal stable boundary ...
Observations of Atmospheric Structure and Dynamics in the Owens Valley of California with a Ground-Based, Eye-Safe, Scanning Aerosol Lidar
Publisher: American Meteorological Society
Abstract: First results are presented from the deployment of the NCAR Raman-Shifted Eye-Safe Aerosol Lidar (REAL) in the Owens Valley of California during the Terrain-Induced Rotor Experiment (T-REX) in March and April 2006. REAL ...
Near-Surface Characteristics of the Turbulence Structure during a Mountain-Wave Event
Publisher: American Meteorological Society
Abstract: case study of mountain-wave-induced turbulence observed during the Terrain-Induced Rotor Experiment (T-REX) in Owens Valley, California, is presented. During this case study, large spatial and temporal variability in aerosol ...
Estimating Daytime Planetary Boundary Layer Heights over a Valley from Rawinsonde Observations at a Nearby Airport: An Application to the Page Valley in Virginia, United States
Publisher: American Meteorological Society
Abstract: he planetary boundary layer (PBL) height is an essential parameter required for many applications, including weather forecasting and dispersion modeling for air quality. Estimates of PBL height are not easily available and ...
Forcing Mechanisms for Washoe Zephyr—A Daytime Downslope Wind System in the Lee of the Sierra Nevada
Publisher: American Meteorological Society
Abstract: This paper investigates the formation mechanisms for a local wind phenomenon known as Washoe Zephyr that occurs frequently in the lee of the Sierra Nevada. Unlike the typical thermally driven slope flows with upslope wind ...
A Numerical Study of the Thermally Driven Plain-to-Basin Wind over Idealized Basin Topographies
Publisher: American Meteorological Society
Abstract: Numerical experiments have been carried out with a two-dimensional nonhydrostatic mesoscale model to investigate the diurnal temperature range in a basin and the thermally driven plain-to-basin winds. Under clear-sky ...
Observations and Numerical Simulations of Subrotor Vortices during T-REX
Publisher: American Meteorological Society
Abstract: High-resolution observations from scanning Doppler and aerosol lidars, wind profiler radars, as well as surface and aircraft measurements during the Terrain-induced Rotor Experiment (T-REX) provide the first comprehensive ...
The Terrain-Induced Rotor Experiment
Publisher: American Meteorological Society
Abstract: The Terrain-Induced Rotor Experiment (T-REX) is a coordinated international project, composed of an observational field campaign and a research program, focused on the investigation of atmospheric rotors and closely related ...