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RISMaximum Likelihood Estimates of Vortex Parameters from Simulated Coherent Doppler Lidar Data
Publisher: American Meteorological Society
Abstract: The performance of pulsed coherent Doppler lidar in estimating aircraft trailing wake vortices by scanning across the aircraft flight track is evaluated using Monte Carlo lidar simulations of a simple vortex pair in both ...
Climatology of Velocity and Temperature Turbulence Statistics Determined from Rawinsonde and ACARS/AMDAR Data
Publisher: American Meteorological Society
Abstract: The climatology of the spatial structure functions of velocity and temperature for various altitudes (pressure levels) and latitude bands is constructed from the global rawinsonde network and from Aircraft Communications, ...
Estimates of Turbulence from Numerical Weather Prediction Model Output with Applications to Turbulence Diagnosis and Data Assimilation
Publisher: American Meteorological Society
Abstract: Estimates of small-scale turbulence from numerical model output are produced from local estimates of the spatial structure functions of model variables such as the velocity and temperature. The key assumptions used are the ...
The Use of Structure Functions and Spectra from Numerical Model Output to Determine Effective Model Resolution
Publisher: American Meteorological Society
Abstract: The effective model resolution of three numerical weather prediction (NWP) models is determined from analyses of spatial structure functions and spatial spectra. In this paper, the effective resolution is defined as the ...
An Improved Algorithm for Low-Level Turbulence Forecasting
Publisher: American Meteorological Society
Abstract: AbstractA low-level turbulence (LLT) forecasting algorithm is proposed and implemented within the Graphical Turbulence Guidance (GTG) turbulence forecasting system. The LLT algorithm provides predictions of energy dissipation ...
Some 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 ...
Simulation of Three-Dimensional Turbulent Velocity Fields
Publisher: American Meteorological Society
Abstract: New algorithms for the simulation of three-dimensional homogeneous turbulent velocity fields are compared with standard spectral domain algorithms. Results are presented for a von Kármán model of the covariance tensor. For ...
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 ...