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RISThe Evolution of Lee-Wave–Rotor Activity in the Lee of Pike’s Peak under the Influence of a Cold Frontal Passage: Implications for Aircraft Safety
Publisher: American Meteorological Society
Abstract: A lee-wave?rotor system interacting with an approaching cold front in the lee of Pike?s Peak near Colorado Springs, Colorado, on 1 April 1997 is studied observationally and numerically. Dynamical effects associated with ...
An Evaluation of Bulk Ri-Based Surface Layer Flux Formulas for Stable and Very Stable Conditions with Intermittent Turbulence
Publisher: American Meteorological Society
Abstract: High-rate near-surface overnight atmospheric data taken during the Cooperative Atmosphere?Surface Exchange Study-1999 (CASES-99) is used to quantify the representativeness of surface layer formulations under statically ...
Evening Temperature Rises on Valley Floors and Slopes: Their Causes and Their Relationship to the Thermally Driven Wind System
Publisher: American Meteorological Society
Abstract: At slope and valley floor sites in the Owens Valley of California, the late afternoon near-surface air temperature decline is often followed by a temporary temperature rise before the expected nighttime cooling resumes. ...
Cooperative Atmosphere–Surface Exchange Study-1999
Publisher: American Meteorological Society
The Interaction of Katabatic Flow and Mountain Waves. Part I: Observations and Idealized Simulations
Publisher: American Meteorological Society
Abstract: The mutual interaction of katabatic flow in the nocturnal boundary layer (NBL) and topographically forced gravity waves is investigated. Due to the nonlinear nature of these phenomena, analysis focuses on information ...
The Interaction of Katabatic Flow and Mountain Waves. Part II: Case Study Analysis and Conceptual Model
Publisher: American Meteorological Society
Abstract: Via numerical analysis of detailed simulations of an early September 1993 case night, the authors develop a conceptual model of the interaction of katabatic flow in the nocturnal boundary layer with mountain waves (MKI). ...
External Influences on Nocturnal Thermally Driven Flows in a Deep Valley
Publisher: American Meteorological Society
Abstract: The dynamics that govern the evolution of nighttime flows in a deep valley, California?s Owens Valley, are analyzed. Measurements from the Terrain-Induced Rotor Experiment (T-REX) reveal a pronounced valley-wind system ...
A Rocky Mountain Storm. Part I: The Blizzard—Kinematic Evolution and the Potential for High-Resolution Numerical Forecasting of Snowfall
Publisher: American Meteorological Society
Abstract: Over the 3-day period of 24?26 October 1997, a powerful winter storm was the cause of two exceptional weather phenomena: 1) blizzard conditions from Wyoming to southern New Mexico along the Front Range of the Rocky Mountains ...
A Rocky Mountain Storm. Part II: The Forest Blowdown over the West Slope of the Northern Colorado Mountains—Observations, Analysis, and Modeling
Publisher: American Meteorological Society
Abstract: A devastating winter storm affected the Rocky Mountain states over the 3-day period of 24?26 October 1997. Blizzard conditions persisted over the foothills and adjoining plains from Wyoming to southern New Mexico, with ...
Targeted Dropwindsondes in Complex Terrain
Publisher: American Meteorological Society
Abstract: The dropwindsonde (or dropsonde) is a frequently utilized tool in geophysical research and its use over ocean and flat terrain is a reliable and well-established practice. Its use in complex terrain, however, is complicated ...