Search Results - "Frederiksen, Jorgen S"

Review of Tropical‐Extratropical Teleconnections on Intraseasonal Time Scales by Stan, Cristiana, Straus, David M., Frederiksen, Jorgen S., Lin, Hai, Maloney, Eric D., Schumacher, Courtney

“…The interactions and teleconnections between the tropical and midlatitude regions on intraseasonal time scales are an important modulator of tropical and…”
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Covariant Lyapunov Vectors and Finite-Time Normal Modes for Geophysical Fluid Dynamical Systems by Frederiksen, Jorgen S

“…Dynamical vectors characterizing instability and applicable as ensemble perturbations for prediction with geophysical fluid dynamical models are analysed. The…”
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Seasonal Cycle of Southern Hemisphere Explosive Growth and Decay of Storms by Osbrough, Stacey L., Frederiksen, Jorgen S.

“…The seasonal variability of Southern Hemisphere (SH) synoptic-scale weather systems is analysed for the 20-year timespan 1997 to 2016. The relationships…”
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Statistical Dynamics and Subgrid Modelling of Turbulence: From Isotropic to Inhomogeneous by Frederiksen, Jorgen S., Kitsios, Vassili, O’Kane, Terence J.

“…Turbulence is the most important, ubiquitous, and difficult problem of classical physics. Feynman viewed it as essentially unsolved, without a rigorous…”
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Realizable Eddy Damped Markovian Anisotropic Closure for Turbulence and Rossby Wave Interactions by Frederiksen, Jorgen S., O’Kane, Terence J.

“…A realizable Eddy Damped Markovian Anisotropic Closure (EDMAC) is presented for the interaction of two-dimensional turbulence and transient waves such as…”
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Tipping Points and Changes in Australian Climate and Extremes by Jorgen S. Frederiksen, Stacey L. Osbrough

“…Systematic changes, since the beginning of the 20th century, in average and extreme Australian rainfall and temperatures indicate that Southern Australian…”
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Turbulence and Rossby Wave Dynamics with Realizable Eddy Damped Markovian Anisotropic Closure by Frederiksen, Jorgen, O’Kane, Terence

“…The theoretical basis for the Eddy Damped Markovian Anisotropic Closure (EDMAC) is formulated for two-dimensional anisotropic turbulence interacting with…”
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Statistical Dynamical Closures and Subgrid Modeling for Inhomogeneous QG and 3D Turbulence by Jorgen S. Frederiksen

“…Statistical dynamical closures for inhomogeneous turbulence described by multi‑field equations are derived based on renormalized perturbation theory…”
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Beyond the First Tipping Points of Southern Hemisphere Climate by Terence J. O’Kane, Jorgen S. Frederiksen, Carsten S. Frederiksen, Illia Horenko

“…Analysis of observations, reanalysis, and model simulations, including those using machine learning methods specifically designed for regime identification,…”
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Statistical Dynamics of Mean Flows Interacting with Rossby Waves, Turbulence, and Topography by Frederiksen, Jorgen S., O’Kane, Terence J.

“…Abridged statistical dynamical closures, for the interaction of two-dimensional inhomogeneous turbulent flows with topography and Rossby waves on a beta–plane,…”
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Simulated austral winter response of the Hadley circulation and stationary Rossby wave propagation to a warming climate by Freitas, Ana C. V., Frederiksen, Jorgen S., O’Kane, Terence J., Ambrizzi, Tércio

“…Ensemble simulations, using both coupled ocean–atmosphere (AOGCM) and atmosphere only (AGCM) general circulation models, are employed to examine the austral…”
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Self-Energy Closure for Inhomogeneous Turbulent Flows and Subgrid Modeling by Jorgen S. Frederiksen

“…A new statistical dynamical closure theory for general inhomogeneous turbulent flows and subgrid modeling is presented. This Self-Energy (SE) closure…”
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Interdecadal changes in Southern Hemisphere winter explosive storms and Southern Australian rainfall by Osbrough, Stacey L., Frederiksen, Jorgen S.

“…Interdecadal changes, over the last seventy years, in winter synoptic weather systems that grow and decay in the extratropical storm tracks of the Southern…”
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Entropy, Closures and Subgrid Modeling by Terence J. O’Kane, Jorgen S. Frederiksen

“…Maximum entropy states or statistical mechanical equilibrium solutions have played an important role in the development of a fundamental understanding of…”
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Dynamics of the perfect storms: La Niña and Australia’s extreme rainfall and floods of 1974 and 2011 by Whelan, Jennifer, Frederiksen, Jorgen S.

“…An ensemble of general circulation model simulations and dynamical mode analyses of important weather systems contributing to Australia’s severe rainfall and…”
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Comparison of Statistical Dynamical, Square Root and Ensemble Kalman Filters by Jorgen S. Frederiksen, Terence J. O’Kane

“…We present a statistical dynamical Kalman filter and compare its performance to deterministic ensemble square root and stochastic ensemble Kalman filters for…”
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Unprecedented strength of Hadley circulation in 2015–2016 impacts on CO2 interhemispheric difference by Frederiksen, Jorgen S, Francey, Roger J

“…The extreme El Niño of 2015 and 2016 coincided with record global warming and unprecedented strength of the Hadley circulation with significant impact on mean…”
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Variability in a four-network composite of atmospheric CO 2 differences between three primary baseline sites by Francey, Roger J., Frederiksen, Jorgen S., Steele, L. Paul, Langenfelds, Ray L.

“…Spatial differences in the monthly baseline CO2 since 1992 from Mauna Loa (mlo, 19.5∘ N, 155.6∘ W, 3379 m), Cape Grim (cgo, 40.7∘ S, 144.7∘ E, 94 m), and South…”
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Variability in a four-network composite of atmospheric CO2 differences between three primary baseline sites by Francey, Roger J, Frederiksen, Jorgen S, Steele, L Paul, Langenfelds, Ray L

“…Spatial differences in the monthly baseline CO2 since 1992 from Mauna Loa (mlo, 19.5∘ N, 155.6∘ W, 3379 m), Cape Grim (cgo, 40.7∘ S, 144.7∘ E, 94 m), and South…”
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Trends and projections of Southern Hemisphere baroclinicity: the role of external forcing and impact on Australian rainfall by Frederiksen, Carsten S., Frederiksen, Jorgen S., Sisson, Janice M., Osbrough, Stacey L.

“…Changes in the characteristics of Southern Hemisphere (SH) storms, in all seasons, during the second half of the twentieth century, have been related to…”
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