Search
CSV
RISSome Influences of Background Flow Conditions on the Generation of Turbulence due to Gravity Wave Breaking above Deep Convection
Publisher: American Meteorological Society
Abstract: Deep moist convection generates turbulence in the clear air above and around developing clouds, penetrating convective updrafts and mature thunderstorms. This turbulence can be due to shearing instabilities caused by strong ...
Mechanisms Influencing Cirrus Banding and Aviation Turbulence near a Convectively Enhanced Upper-Level Jet Stream
Publisher: American Meteorological Society
Abstract: echanisms supporting a cold-season aviation turbulence outbreak over the northwest Atlantic Ocean and adjacent coastal regions of North America are investigated using high-resolution numerical simulations. Two distinct ...
Convection-Permitting Simulations of the Environment Supporting Widespread Turbulence within the Upper-Level Outflow of a Mesoscale Convective System
Publisher: American Meteorological Society
Abstract: Widespread moderate turbulence was recorded on three specially equipped commercial airline flights over northern Kansas near the northern edge of the extensive cirrus anvil of a nocturnal mesoscale convective system (MCS) ...
Trapped Gravity Waves and Their Association with Turbulence in a Large Thunderstorm Anvil during PECAN
Publisher: American Meteorological Society
Abstract: AbstractGeostationary Operational Environmental Satellite-14 (GOES-14) 1-km visible satellite data with 1-min frequency revealed horizontally propagating internal gravity waves emanating from tropopause-penetrating deep ...
Upstream-Propagating Wave Modes in Moist and Dry Flow over Topography
Publisher: American Meteorological Society
Abstract: revious studies have observed upstream-propagating modes in two-dimensional numerical simulations of idealized flow over topography with moist, nearly neutral conditions in the troposphere, topped by a stable stratosphere. ...
Influences of Moist Convection on a Cold-Season Outbreak of Clear-Air Turbulence (CAT)
Publisher: American Meteorological Society
Abstract: he 9?10 March 2006 aviation turbulence outbreak over the central United States is examined using observations and numerical simulations. Though the turbulence occurs within a deep synoptic cyclone with widespread precipitation, ...
On the Consequences of PBL Scheme Diffusion on UTLS Wave and Turbulence Representation in High-Resolution NWP Models
Publisher: American Meteorological Society
Abstract: Mesoscale numerical weather prediction (NWP) models are routinely exercised at kilometer-scale horizontal grid spacings (Δx). Such fine grids will usually allow at least partial resolution of small-scale gravity waves and ...
Aviation Turbulence Forecasting at Upper Levels with Machine Learning Techniques based on Regression Trees
Publisher: American Meteorological Society
Abstract: We explore the use of machine learning (ML) techniques, namely regression trees (RT), for the purpose of aviation turbulence forecasting at upper levels (20 – 45 kft altitude). In particular, we develop a series of RT-based ...
Turbulence Dissipation Rate in the Atmospheric Boundary Layer: Observations and WRF Mesoscale Modeling during the XPIA Field Campaign
Publisher: American Meteorological Society
Abstract: AbstractA better understanding and prediction of turbulence dissipation rate ε in the atmospheric boundary layer (ABL) is important for many applications. Herein, sonic anemometer data from the Experimental Planetary ...
Observations and Numerical Simulations of Inertia–Gravity Waves and Shearing Instabilities in the Vicinity of a Jet Stream
Publisher: American Meteorological Society
Abstract: The characteristics and dynamics of inertia?gravity waves generated in the vicinity of an intense jet stream/ upper-level frontal system on 18 February 2001 are investigated using observations from the NOAA Gulfstream-IV ...